Updated on 2024/10/04

写真a

 
OHNO, Noriyasu
 
Organization
Graduate School of Engineering Electrical Engineering 2 Professor
Graduate School
Graduate School of Engineering
Undergraduate School
School of Engineering Electrical Engineering, Electronics, and Information Engineering
Title
Professor
Contact information
メールアドレス

Degree 1

  1. 博士(理学) ( 1995   九州大学 ) 

Research Interests 5

  1. Plasma-gas interactions

  2. Plasma-material interactions

  3. Nuclear Fusion

  4. Plasma

  5. Plasma-gas interactions

Research Areas 4

  1. Energy Engineering / Fundamental plasma  / Nonlinear phenomena, Chaos Wave, Atomic/molecular process

  2. Energy Engineering / Applied plasma science  / Surface treatment, Nano structure

  3. Energy Engineering / Nuclear fusion  / Divertor, Edge plasma, Plasma -wall interaction

  4. Energy Engineering / Fundamental plasma  / Nonlinear phenomena, Chaos Wave, Atomic/molecular process

Current Research Project and SDGs 2

  1. Development of new functional materials by using plasma

  2. Controlling edge plasmas aimed at magnetically confined fusion power station

Research History 11

  1. Nagoya University

    2023.4

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    Country:Japan

  2. 東海国立大学機構   低温プラズマ科学総合研究拠点   拠点長

    2023.4

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    Country:Japan

  3. Nagoya University   Graduate School of Engineering Plasma Nanotechnology Research Center   Director in General

    2017.4 - 2019.3

  4. Nagoya University   Professor

    2008.4

  5. Nagoya University   Professor

    2008.4

  6. Nagoya University   Associate Professor

    2005.4 - 2008.3

  7. Nagoya University   Associate Professor

    2003.4 - 2005.3

  8. Nagoya University   Associate Professor

    2002.2 - 2003.3

  9. Nagoya University   Lecturer

    1995.4 - 2002.1

  10. Nagoya University   Assistant

    1990.10 - 1995.3

  11. Nagasaki University   Assistant

    1988.4 - 1990.9

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    Country:Japan

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Education 4

  1. Kyushu University

    1997.4 - 1998.3

  2. Kyushu University

    1987.4 - 1988.3

  3. Kyushu University   Graduate School, Division of Integrated Science and Engineering

    1985.4 - 1987.3

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    Country: Japan

  4. Kyushu University   Faculty of Science

    1981.4 - 1985.3

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    Country: Japan

Professional Memberships 3

  1. プラズマ・核融合学会

  2. 日本物理学会

  3. 電気学会

Committee Memberships 94

  1. プラズマ・核融合学会   プラズマ・核融合学会広報委員  

    2023.7 - 2025.6   

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    Committee type:Academic society

  2. 量子科学研究開発機構炉心プラズマ共同企画委員会   委員  

    2022.5 - 2023.3   

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    Committee type:Other

  3. 東北大学量子エネルギー材料科学国際研究センター共同利用委員会委員および採択専門委員会   委員  

    2022.4 - 2024.3   

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    Committee type:Other

  4. 筑波大学プラズマ研究センター運営協議会   委員  

    2022.4 - 2024.3   

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    Committee type:Other

  5. 核融合科学研究所PWI国内技術委員会   委員  

    2022.4 - 2024.3   

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    Committee type:Other

  6. 核融合科学研究所運営会議外部評価委員会   委員  

    2021.6 - 2023.3   

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    Committee type:Other

  7. 大学改革支援・学位授与機構国立大学教育研究評価委員会   専門委員  

    2020.2 - 2021.3   

  8. 量子科学研究開発機構核融合エネルギーフォーラム   委員  

    2020.1 - 2024.3   

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    Committee type:Other

  9. 核融合科学研究所運営会議   委員  

    2019.5 - 2023.4   

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    Committee type:Other

  10. 九州大学附属高温プラズマ理工学研究センターQUEST実験推進会議   委員  

    2019.4 - 2023.3   

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    Committee type:Other

  11. 文部科学省科学技術・学術審議会専門委員会   委員  

    2019.4 - 2023.2   

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    Committee type:Government

  12. XXXIV International Conference on Phenomena in Ionized Gases and 10th International Conference on Reactive Plasmas   ICRP International Organizing Committee  

    2018.10 - 2019.7   

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    Committee type:Academic society

  13. 核融合エネルギーフォーラムダイバータ研究開発加速戦略方策検討評価ワーキンググループ   専門委員  

    2018.10 - 2019.3   

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    Committee type:Other

  14. 核融合科学研究所運営会議次期計画検討委員会   委員  

    2018.9 - 2019.4   

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    Committee type:Other

  15. 筑波大学プラズマ研究センター双方向型共同研究審査委員会   委員  

    2018.4 - 2023.3   

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    Committee type:Other

  16. 東北大学金属材料研究所附属量子エネルギー材料科学国際研究センター共同利用委員会   委員  

    2018.4 - 2020.3   

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    Committee type:Other

  17. ISPlasma 2019/IC-PLANTS2019組織委員会   委員  

    2018.4 - 2019.3   

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    Committee type:Academic society

  18. 一般社団法人プラズマ・核融合学会   領域長  

    2018.1 - 2018.12   

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    Committee type:Academic society

  19. ISPlasma 2018/IC-PLANTS2018組織委員会   プログラム委員、組織委員  

    2017.11 - 2018.3   

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    Committee type:Academic society

  20. 核融合科学研究所運営会議外部評価委員会   委員  

    2017.9 - 2019.3   

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    Committee type:Other

  21. 核融合エネルギーフォーラム専門委員会   専門委員  

    2017.9 - 2018.3   

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    Committee type:Other

  22. 日本学術振興会特別研究員等審査会および国際事業委員会   審査員  

    2017.8 - 2018.7   

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    Committee type:Academic society

  23. 日本学術振興会 特別研究員等審査会   専門委員  

    2017.8 - 2018.7   

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    Committee type:Other

  24. 日本学術振興会 国際事業委員会   書面審査員・書面評価員  

    2017.8 - 2018.7   

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    Committee type:Other

  25. 日本学術振興会 卓越研究員候補者選考委員会   書面審査員  

    2017.8 - 2018.7   

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    Committee type:Other

  26. プラズマ技術産業応用センター運営会議   委員  

    2017.7 - 2018.3   

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    Committee type:Municipal

  27. 第12回核融合エネルギー連合講演会組織委員会   委員  

    2017.6 - 2018.12   

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    Committee type:Academic society

  28. 核融合科学研究所運営会議   委員  

    2017.5 - 2019.4   

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    Committee type:Other

  29. 自然科学研究機構核融合科学研究所運営会議   委員  

    2017.5 - 2019.4   

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    Committee type:Other

  30. 中部電力株式会社電力技術研究会電源専門部会   専門委員  

    2017.4 - 2023.3   

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    Committee type:Other

  31. 九州大学附属高温プラズマ理工学研究センターQUEST実験推進会議   委員  

    2017.4 - 2019.3   

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    Committee type:Other

  32. 中部電力 電力技術研究会電源専門部会   専門委員  

    2017.4 - 2019.3   

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    Committee type:Other

  33. 核融合科学技術委員会   科学技術・学術審議会専門委員  

    2017.4 - 2019.2   

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    Committee type:Government

  34. 科学技術・学術審議会専門委員会   専門委員  

    2017.3 - 2019.2   

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    Committee type:Government

  35. 核融合科学研究所日米次期共同プロジェクト推進小委員会   委員  

    2017.1 - 2018.3   

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    Committee type:Other

  36. 量子科学技術研究開発機構核融合エネルギーフォーラム専門委員会   専門委員  

    2016.10 - 2017.3   

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    Committee type:Other

  37. 日本原子力研究開発機構核融合エネルギーフォーラム   専門委員  

    2015.8 - 2016.3   

  38. プラズマ・核融合学会広報委員会   広報委員  

    2015.7 - 2017.6   

  39. 日本原子力研究開発機構炉心プラズマ共同企画委員会プラズマ実験・システム開発専門部会   専門委員  

    2015.6 - 2016.3   

  40. 核融合科学研究所運営会議   委員  

    2015.5 - 2017.4   

  41. 文部科学省科学技術・学術審議会   専門委員  

    2015.3 - 2017.2   

  42. 核融合科学技術委員会   委員  

    2015.3 - 2017.2   

  43. 日本学術振興会科学研究費委員会   専門委員  

    2014.12 - 2015.11   

  44.   学会現地実行委員  

    2013.4 - 2015.3   

  45.   国際会議国際組織委員  

    2012.9 - 2013.3   

  46. JT-60改修計画及び炉心プラズマ共同企画委員会   専門委員 JT-60SA専門部会  

    2012.7 - 2013.3   

  47.   国際会議国際組織委員  

    2012.5 - 2013.3   

  48. The 23rd International Toki Conference(ITC-23)   International Advisory Committee  

    2012.5 - 2013.3   

  49. TEXTOR国内技術委員会   委員  

    2012.4 - 2014.3   

  50. ISPlasma2013プログラム委員会   委員  

    2012.4 - 2013.3   

  51. 九州大学附属高温プラズマ力学研究センターQUEST実験推進会議   委員  

    2012.4 - 2013.3   

  52. ISPlasma2013組織委員会   委員  

    2012.4 - 2013.3   

  53. 核融合科学研究所運営会議外部評価委員会専門部会   専門委員  

    2011.10 - 2012.3   

  54. 平成23年度炉心プラズマ共同企画委員会   専門委員 JT-60SA専門部会  

    2011.8 - 2012.3   

  55. プラズマ・核融合学会企画第2小委員会   委員  

    2011.7 - 2013.6   

  56. 核融合科学研究所運営会議共同研究委員会   委員  

    2011.6 - 2013.4   

  57. ISPlasma2012組織委員会   委員  

    2011.4 - 2012.4   

  58. ISPlasma2012プログラム委員会   委員  

    2011.4 - 2012.4   

  59. 日米次期共同プロジェクト推進小委員会   委員  

    2011.2 - 2012.3   

  60. プラズマ・核融合学会 Plasma and Fusion Research   常務エディタ  

    2010.12 - 2012.11   

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    Committee type:Academic society

  61. 筑波大学プラズマ研究センター双方向型共同研究審査委員会   委員  

    2010.7 - 2012.3   

  62. 平成22年度JT-60専門部会   専門委員  

    2010.6 - 2011.3   

  63. 21st International Toki Conference (ITC-21)   International Program Committee  

    2010.5 - 2011.12   

  64. TEXTOR国内技術委員会   委員  

    2010.4 - 2012.3   

  65. ISPlasma2011プログラム委員会   委員  

    2010.4 - 2011.4   

  66. ISPlasma2011組織委員会   委員  

    2010.4 - 2011.4   

  67. 核融合科学研究所運営会議共同研究委員会   委員  

    2009.6 - 2011.4   

  68. 炉心プラズマ共同企画委員会   専門委員(JT-60専門部会、JT-60SA専門部会)  

    2009.6 - 2010.3   

  69. 20th International Toki Conference(ITC-20)   International Program Committee  

    2009.5 - 2010.12   

  70. ISPlasma2010プログラム委員会   委員  

    2009.4 - 2010.4   

  71. ISPlasma2010組織委員会   委員  

    2009.4 - 2010.4   

  72. 国際トカマク物理活動(スクレイプ・オフ層及びダイバータの物理)   国際委員  

    2008.4   

  73. 電気学会 編集専門第3部会   委員  

    2008.4 - 2010.3   

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    Committee type:Academic society

  74. 18th International Toki Conference (ITC-18)   International Program Committee  

    2007.5 - 2008.12   

  75.   国際プログラム委員会委員  

    2007.4 - 2008.3   

  76.   国際組織委員会委員  

    2007.1 - 2007.12   

  77. 日本原子力研究開発機構 炉心プラズマ研究共同企画委員   専門委員  

    2006.10 - 2007.3   

  78. 日本原子力研究所「SOL及びダイバータに関する研究」   研究嘱託委員  

    2006.4 - 2008.3   

  79.   現地実行委員会委員  

    2006.4 - 2007.3   

  80. プラズマ・核融合学会   論文賞・技術進歩賞・学術奨励賞・産業技術賞選考委員  

    2006.4 - 2007.3   

  81. プラズマ・核融合学会 研究調査専門委員会   委員  

    2006 - 2009   

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    Committee type:Academic society

  82. プラズマ・核融合学会 論文賞・技術進歩賞・学術奨励賞産業技術賞選考委員会   委員  

    2006   

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    Committee type:Academic society

  83. プラズマ・核融合学会企画委員会   企画委員・企画第2小委員会委員ーSSH活動  

    2004.9 - 2007.6   

  84. プラズマ・核融合学会企画委員会、企画第2小委員会   委員  

    2004.4 - 2007.3   

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    Committee type:Academic society

  85. 日本原子力研究所核融合研究委員会   専門委員  

    2003.6 - 2005.9   

  86. 日本物理学会 分科会(放電)   世話人  

    2002.4 - 2004.3   

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    Committee type:Academic society

  87. 日本物理学会分科会(放電)   世話人  

    2001.5 - 2003.4   

  88. 電気学会東海支部   「若手セミナー」世話人  

    2001.4 - 2003.3   

  89.   現地実行委員会委員  

    2001.4 - 2002.3   

  90.   現地実行委員会委員  

    2001.2 - 2002.12   

  91.   現地実行委員会委員  

    2001.2 - 2002.12   

  92.   現地実行委員会委員  

    1999.4 - 2000.3   

  93. プラズマ・核融合学会編集委員会   企画幹事  

    1997.7 - 2000.3   

  94.   現地実行委員会委員  

    1996.4 - 1997.3   

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Awards 5

  1. プラズマ・核融合学会賞技術進歩賞

    2020.12   プラズマ・核融合学会   プラズマ・中性子照射材相互作用研究のための高密度プラズマ照射・試料解析装置の開発

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    Award type:International academic award (Japan or overseas)  Country:Japan

  2. 平成29年度日本学術振興会特別研究員等審査会専門医委員(書面担当)表彰

    2018.7   日本学術振興会  

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    Country:Japan

  3. プラズマ・核融合学会論文賞

    2014.12   プラズマ・核融合学会  

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    Country:Japan

  4. 平成21年度JT-60U共同研究優秀賞

    2011.3   (独)日本原子力研究開発機構  

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    Country:Japan

  5. 第46回燃焼シンポジウムベストプレゼンテーション賞「ダブルプローブ法による大気圧酸素燃焼プラズマの電子特性評価」

    2008.12   日本燃焼学会  

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    Country:Japan

 

Papers 650

  1. Four-dimensional conditional averaging tomography of rotating plasma ejection from cylindrical detached plasma Reviewed International journal

    Tanaka H., Kajita S., Natsume H., Ohno N.

    Scientific Reports   Vol. 14 ( 1 ) page: 9329   2024.12

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Scientific Reports  

    Detached plasma formation is a way to reduce the heat load on the wall in magnetic fusion devices. This study proposes a novel analysis technique consisting of the conditional averaging, sliding window, and tomography to reveal the spatiotemporal behavior of the rotating radial ejection event of detached plasma, which further contributes to local heat load reduction. The used equipment is a high-speed camera and an electrostatic probe located at the periphery of the linear plasma device NAGDIS-II. By applying this method, four-dimensional (4D) behavior of the emission structure along time (1D) and space perpendicular and parallel to the magnetic field (3D) was clarified; a rotating distorted structure appears as a precursor, which is then scraped and transported radially and axially. The proposed method is widely applicable to short-term rigid-body rotating structures, especially in linear plasmas.

    DOI: 10.1038/s41598-024-59182-5

    Scopus

    PubMed

  2. Machine learning aided line intensity ratio method for helium-hydrogen mixed recombining plasmas Reviewed International coauthorship International journal

    Kajita S., Nishijima D., Fujii K., Tanaka H., Vernimmen J., van der Meiden H., Classen I., Ohno N.

    Plasma Physics and Controlled Fusion   Vol. 66 ( 10 ) page: 105005   2024.10

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Plasma Physics and Controlled Fusion  

    The helium line intensity ratio (LIR) with the help of a collisional radiative (CR) model has long been used to measure the electron density, n e , and temperature, T e , and its potential and limitations for fusion applications have been discussed. However, it has been reported that the CR model approach leads to deviations in helium-hydrogen mixed plasmas and/or recombining plasmas. In this study, a machine learning (ML) aided LIR method is used to measure n e and T e from spectroscopic data of helium-hydrogen mixed recombining plasmas in the divertor simulator Magnum-PSI. To analyze mixed plasmas, which have more complex spectral shapes, the spectroscopy data were used directly for training instead of separating the intensities of each line. It is shown that the ML approach can provide a robust and simpler analysis method to deduce n e and T e from the visible emissions in helium-hydrogen mixed plasmas.

    DOI: 10.1088/1361-6587/ad6a81

    Scopus

  3. Hydrogen isotope effects on recombination dominant plasmas in NAGDIS-II Reviewed International coauthorship International journal

    Shi J., Kaizawa H., Uematsu Y., Tanaka H., Kajita S., Ohno N., Sawada K., Ding H.

    Plasma Physics and Controlled Fusion   Vol. 66 ( 8 ) page: 085006(11 pp)   2024.8

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Plasma Physics and Controlled Fusion  

    The detachment processes of the hydrogen (H) and deuterium (D) plasmas are comparatively investigated in the linear plasma device NAGDIS-II. The laser Thomson scattering measurements demonstrate that the recombination rate of the H plasma is greater than that of the D plasma as the neutral pressure increases in the molecular activated recombination (MAR) dominant detachment phase. As the recombination process by MAR is strongly dependent on the vibrational and rotationally excited states of the molecule, the rovibrational quantum state populations of the H and D molecules are measured using the Fulcher-α band spectroscopy. The results indicate that the vibrational temperature in the electronic ground state is considerably higher than the rotational temperature during detachment. The reaction rate coefficients for MARs due to charge exchange chains (CX-MAR) and dissociative attachment chains (DA-MAR) are calculated by the collision-radiation model under the measured temperature conditions. It can be observed that the CX-MAR is larger than the DA-MAR for both H and D, and that the CX-MAR of H is larger than the CX-MAR of D at electron temperatures T e above 1 eV. In consideration of the experimentally observed vibrational and rotational excitation temperatures, the reaction rate coefficients of CX-MAR and DA-MAR are increasing in the low T e region. These calculations are in accordance with the experimental results, which indicate that recombination processes due to MAR are more predominant in the H plasma compared to the D plasma. Furthermore, a transition from MAR to electron-ion recombination processes is observed in the D plasma at T e below 0.5 eV.

    DOI: 10.1088/1361-6587/ad59c4

    Scopus

  4. Germanium nanostructures by helium plasma irradiation Reviewed International journal

    Kajita S., Shi Q., Tabata K., Kuwabara T., Tanaka H., Ohno N.

    Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   Vol. 63 ( 7 ) page: 07SP07   2024.7

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers  

    The effects of helium plasma irradiation, which has been widely studied on metals, on germanium have been experimentally investigated. The irradiation temperature ranges from 430 to 720 K, and the incident ion energy ranges from 30 to 100 eV. From the scanning electron microscope (SEM) observation, it was found that various morphological changes including pits, nanocones, nanopillars, and roughened surfaces occur. The spatial scale of the morphological change was analyzed by applying fast Fourier transform to SEM micrographs. Thermal desorption spectroscopy analysis suggests that He atoms implanted on Ge play major roles in forming roughened surfaces at a surface temperature higher than 500 K.

    DOI: 10.35848/1347-4065/ad5afe

    Scopus

  5. Lithography-Free Nanofabrication on Various Semiconductors by the Codeposition Etching Technique Reviewed International journal

    Shi Q., Kajita S., Ohno N., Tanaka H., Yasuhara R., Fujiwara H., Uehara H.

    Langmuir   Vol. 40 ( 24 ) page: 12437 - 12442   2024.6

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    Nano-/microstructures can be formed with the aid of small amounts of impurities during deposition with noble gas plasma irradiation, which is referred to as codeposition etching. This can be a new method for lithography-free semiconductor nanofabrication. Here, the codeposition etching method was employed with argon plasma and molybdenum (Mo) impurities on various semiconductors. Structures can be formed only on substrates that have a lower sputtering yield than the seed impurity. The density, area, and height of structures are related to both the impurity deposition rate and the substrate material. Moreover, two mechanisms of impurity nucleation are proposed according to time dependence results for the formation of the structures.

    DOI: 10.1021/acs.langmuir.4c00686

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    PubMed

  6. First results of multi-fluid modeling of detached hydrogen plasmas in a linear plasma device using fluid code LINDA-NU Reviewed International journal

    Sugiura K., Ido T., Tanaka H., Natsume H., Masuda S., Hoshino K., Sawada K., Ohno N.

    Contributions to Plasma Physics   Vol. 2024;e202300150   2024.6

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    In order to simulate hydrogen (H) plasma in the linear plasma device NAGDIS-II, we have modified the fluid code LINDA-NU to allow the simultaneous calculation of multiple ion species consisting of hydrogen atomic ions ((Formula presented.)) and molecular ions ((Formula presented.)). In this simulation, H and (Formula presented.) neutrals are assumed to be uniformly distributed in space in order to obtain initial qualitative results. The fraction of (Formula presented.) ions increases as the (Formula presented.) molecular density increases, and the recombination process between (Formula presented.) and electrons is observed to reduce the particle flux to the target plate. With an increase in H density, the electron density increases due to the decrease in ion flow velocity due to the change exchange process, and the electron temperature decreases to less than 1 eV, leading to the detached plasma formation attributed to the electron-ion recombination process.

    DOI: 10.1002/ctpp.202300150

    Scopus

  7. Tungsten fuzz growth at low temperatures (<900 K) on a surface with nanocones Reviewed International journal

    Shi Q., Kajita S., Ohno N.

    Nuclear Materials and Energy   Vol. 39   page: 101668   2024.5

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    The tungsten (W) fuzzy structure was widely observed in linear plasma devices under the fusion-relevant condition. This type of structure can be used in many application fields benefiting from its larger surface area and high optical absorbance. However, W fuzz can be barely formed when the sample temperature is lower than 900 K. This study decreased the threshold to ∼800 K using W co-deposition on a Si nanocones substrate. It suggests that the conventional threshold temperature is only necessary for He bubble rupture to create a rough surface that induces the uneven trapping of the adatom diffusion.

    DOI: 10.1016/j.nme.2024.101668

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  8. Surface modification of ZrC dispersion-strengthened W under low energy He plasma irradiation Reviewed International coauthorship

    Li L., Liu Z., Chen Z., Yin C., Mao S., Wu X., Ohno N., Ye M.

    Nuclear Fusion   Vol. 64 ( 5 ) page: 56008   2024.5

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Nuclear Fusion  

    ZrC dispersion-strengthened W exhibits high strength/ductility, low ductile-to-brittle transition temperature, and excellent thermal shock resistance, making it a promising candidate plasma-facing material for future fusion devices. In this study, surface modification of 0.5 wt.% ZrC dispersion-strengthened W (WZrC) under low energy and high fluence He plasma irradiation at high temperature was presented. Under the energy of 90 eV and fluence ranging from 6 × 1024 He·m−2-2 × 1026 He·m−2 He irradiation at 920 °C, a typical fuzz nanostructure appeared on the W matrix of WZrC. The thickness of fuzz layer is proportional to the square root of He irradiation fluence. The fuzz showed comparable thickness and structural features to pure W, indicating limited effects of the particle’s addition on resistance to high fluence He irradiation at high temperatures. Under continuous He injection, the fuzz would grow extending onto the particle area, making the particle obscured. Besides, the erosion behavior of particles under He plasma irradiation has been investigated, which is thought to be dominated by a sputtering process. Under the He influence of 6 × 1024 He·m−2, only nanopores were observed in the surface region. With fluence increasing to 5 × 1025 He·m−2, the surface became relatively uneven with larger holes. W aggregated in spots and distributed on the surface of the particle, which might be the result of subthreshold sputtering and deposition. When fluence further increased to 2 × 1026 He·m−2, the particles were eroded completely and covered by the extended fuzz, forming cavities. In addition, distinctive layered nanotendrils were observed above the cavities, which were characterized to consist of inner W-riched skeletons and outer Zr-riched layers. It indicates that the layered nanotendrils should be the result of fuzz extension combined with particle sputtering/deposition.

    DOI: 10.1088/1741-4326/ad2f4c

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  9. Nanopatterning of Si surfaces by normal incident He plasma irradiation Reviewed

    Liu Z., Li L., Gao Z., Chen Z., Yin C., Mao S., Kajita S., Ohno N., Ye M.

    Applied Physics Letters   Vol. 124 ( 10 )   2024.3

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    Publisher:Applied Physics Letters  

    This study reports on the formation of self-organized silicon (Si) nanostructures by 75 eV helium (He) plasma irradiation at normal incidence without the presence of impurities. In contrast to the featureless surface after normal incidence argon (Ar) ion beam irradiation without the co-deposition of impurities, the Si surface exhibits the development of faceted nanostructures under 75 eV He plasma irradiation. The faceted structures are interspersed with valleys that extend in two orthogonal directions, imparting a mountain-like morphology to the surface. Our investigation verifies that the He bubbles align themselves along the direction perpendicular to the surface underneath these valleys. Furthermore, the presence of He bubbles induces distortion in the surface layer and leads to the formation of an amorphous Si layer. The underlying mechanism driving this surface evolution could be attributed to the instability induced by the presence of He bubbles.

    DOI: 10.1063/5.0186756

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  10. Cone array formation on Si surfaces by low-energy He plasma irradiation with magnetron sputtering pre-deposited Ta Reviewed International coauthorship

    Liu Z., Li L., Gao Z., Chen Z., Yin C., Mao S., Kajita S., Ohno N., Ye M.

    Journal of Applied Physics   Vol. 135 ( 9 ) page: 93302   2024.3

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    Low-energy ion beam irradiation, combined with the introduction of impurities, presents a promising approach for nanopatterning silicon (Si) surfaces. In this research, we investigate the surface evolution of Si (100) surfaces irradiated by 75 eV helium (He) plasma, in the presence of tantalum (Ta), traditionally regarded as an impurity incapable of initiating pattern formation, as evidenced in prior studies. The Ta impurities are pre-deposited onto the Si surfaces using the magnetron sputtering method, which offers a more controlled and quantifiable approach compared with the conventional co-deposition route. After irradiation at 800 K, dense cone arrays are produced on the Si surface. The growth of the cones is explored for fluence spanning (1-10) × 1025 m−2. The cross-sectional scanning electron microscope images indicate that the cone lengths and base width are well characterized by t1/2 dependence. The kinetics of the cone growth follow Fick’s law, characterized by an effective diffusive mechanism with the coefficients of diffusion: D = 6.49 ± 0.83 × 10−16 m−2 s−1. Transmission electron microscope observations reveal that the cone has distinct inner and outer parts with different microstructures and a clear interface. The growth mechanism of these cones is elucidated as a composite process involving preferential sputtering, the destabilizing influence of He bubbles, and the migration of adatoms.

    DOI: 10.1063/5.0187265

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  11. Plasma-Driven Sciences: Exploring Complex Interactions at Plasma Boundaries Reviewed International journal

    Ishikawa K., Koga K., Ohno N.

    Plasma   Vol. 7 ( 1 ) page: 160 - 177   2024.3

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    Plasma-driven science is defined as the artificial control of physical plasma-driven phenomena based on complex interactions between nonequilibrium open systems. Recently, peculiar phenomena related to physical plasma have been discovered in plasma boundary regions, either naturally or artificially. Because laboratory plasma can be produced under nominal conditions around atmospheric pressure and room temperature, phenomena related to the interaction of plasma with liquid solutions and living organisms at the plasma boundaries are emerging. Currently, the relationships between these complex interactions should be solved using science-based data-driven approaches; these approaches require a reliable and comprehensive database of dynamic changes in the chemical networks of elementary reactions. Consequently, the elucidation of the mechanisms governing plasma-driven phenomena and the discovery of the latent actions behind these plasma-driven phenomena will be realized through plasma-driven science.

    DOI: 10.3390/plasma7010011

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  12. Thermal Conductivity Measurement of Fuzzy W Using a Thermoreflectance Method Reviewed

    Kajita S., Yagi T., Ohno N.

    IEEE Transactions on Plasma Science   Vol. Early Access   page: 1 - 6   2024.1

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    Fuzzy nanostructured tungsten (W) is formed by helium (He) plasma irradiation. In fusion devices, the thermophysical properties are important to consider the response to pulsed heat load from the plasma. In this work, the thermal conductivity of the W fuzz is measured using a pulsed light heating thermoreflectance method. A detailed model was developed to explain the entire temporal evolution of the thermoreflectance signal. It was found that the thermal conductivity of the nanostructured layer was deduced to be in the range of 0.18%&#x2013;0.21% of the pure (ideal) W and lower than the previously reported highly porous metallic materials. In addition to the porosity, the specific nonuniform nanofiber structure is likely to contribute to the low effective thermal conductivity.

    DOI: 10.1109/TPS.2023.3348465

    Scopus

  13. Thermal response of nano-tendril bundles to steady heat load Reviewed International coauthorship

    Xue Qi, Tanaka Hirohiko, Zhang Rongshi, Kajita Shin, Hori Kenta, Shi Quan, Kuwabara Tatsuya, Ohno Noriyasu

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 62 ( SN )   2023.11

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    DOI: 10.35848/1347-4065/ace6ac

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  14. Transition from MAR to EIR of deuterium plasma detachment in NAGDIS-II Reviewed International coauthorship

    Shi J., Kaizawa H., Tanaka H., Kajita S., Ohno N., Ding H.

    Physica Scripta   Vol. 98 ( 11 ) page: 115605   2023.10

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    Volumetric plasma recombination in a detached deuterium (D) plasma was experimentally studied in the linear plasma device NAGDIS-II. The radial distributions of the electron temperature (Te) and the electron density (ne) were measured by upstream and downstream laser Thomson scattering (LTS) systems and D-atom excited states of the Balmer series (n = 3-7) were measured by optical emission spectroscopy (OES). The results indicated that the electron static pressure, particle flux and heat flux present a two-step reduction with an increasing neutral pressure, suggesting that molecule activated recombination (MAR) and electron-ion recombination (EIR) were activated, respectively. The difference in the distributions of the atomic state population densities was observed to be a feature of the transition from the MAR-dominant phase to the EIR-dominant phase. The transition between the two phases had a distinct boundary at Te ∼0.7 eV, which was considered a transition point between the phases. The ratios of the atomic state population densities showed different features in the two phases, and are expected to be useful in characterizing the phase and degree of plasma detachment.

    DOI: 10.1088/1402-4896/acfeb4

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  15. Application of machine learning for optical emission spectroscopy data in NAGDIS-II Reviewed

    Kajita S., Sakakibara T., Kaizawa H., Natsume H., Tanaka H., Fujii K., Ohno N.

    Fusion Engineering and Design   Vol. 196   page: 114012   2023.9

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    In this study, we applied machine learning to optical emission spectroscopy (OES) data and device parameters from the linear plasma device NAGDIS-II to explore the potential application of machine learning for predicting electron density, ne, and temperature, Te. The covered ranges of ne and Te, which were measured by an electrostatic probe, are 3.6 × 1017–2.4×1019 m−3 and 0.3–7.1eV, respectively. A three hidden layer neural network (NN) is introduced to model the relationship between ne/Te and the combination of line intensities, radial position, and device parameters. It is shown that the errors in ne and Te become 18.0 and 18.8%, respectively, which were almost the same level for the electrostatic probe, using all available data. Lasso regression and greedy algorithm are used to select the necessary line emissions. It is shown that four or five line intensities are sufficient to obtain almost the same quality as the one with all the other lines.

    DOI: 10.1016/j.fusengdes.2023.114012

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  16. Fabrication of tungsten-based optical diffuser using fiberform nanostructure via efficient plasma route Reviewed International coauthorship

    Feng Shuangyuan, Natsume Hiroki, Kajita Shin, Li Enhao, Yasuhara Ryo, Tokitani Masayuki, Tanaka Hirohiko, Ohno Noriyasu

    OPTICS EXPRESS   Vol. 31 ( 16 ) page: 25438 - 25445   2023.7

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    DOI: 10.1364/OE.493993

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  17. Field emission properties of nano-tendril bundles formed via helium plasma exposure with various additional impurity gases Reviewed International coauthorship

    Zhang Rongshi, Kajita Shin, Hwangbo Dogyun, Tanaka Hirohiko, Feng Shuangyuan, Ohno Noriyasu

    MATERIALS RESEARCH EXPRESS   Vol. 10 ( 5 ) page: 054002   2023.5

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/2053-1591/acd1d4

    Web of Science

    Scopus

  18. Growth origin of large-scale fiberform nanostructures in He-W co-deposition environment Reviewed

    Hori K, Kajita S, Zhang R, Tanaka H, Ohno N

    Scientific reports   Vol. 13 ( 1 ) page: 5450   2023.4

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    DOI: 10.1038/s41598-023-32621-5

    PubMed

  19. Rapid growth of nanostructure on tungsten thin film by exposure to helium plasma Reviewed

    Feng Shuangyuan, Kajita Shin, Tokitani Masayuki, Nagata Daisuke, Ohno Noriyasu

    PLASMA SCIENCE & TECHNOLOGY   Vol. 25 ( 4 ) page: 042001   2023.4

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/2058-6272/ac9f2d

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  20. Erratum: Morphologies of co-depositing W layer formed during He plasma irradiation (International Atomic Energy Agency (2018) 58 (106002) DOI: 10.1088/1741-4326/aad24e) Reviewed

    Kajita S., Kawaguchi S., Yoshida N., Ohno N., Tanaka H.

    Nuclear Fusion   Vol. 63 ( 4 )   2023.4

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    Publisher:Nuclear Fusion  

    There are no changes to the fitting values in the original article.

    DOI: 10.1088/1741-4326/acbbde

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    Scopus

  21. Correlation of the Orthogonal Basis of the Core Plasma Distribution to the Divertor Footprint Distribution in LHD

    TANAKA Hirohiko, MASUZAKI Suguru, KAWAMURA Gakushi, HAYASHI Yuki, KOBAYASHI Masahiro, SUZUKI Yasuhiro, MUKAI Kiyofumi, KAJITA Shin, OHNO Noriyasu

    Plasma and Fusion Research   Vol. 18 ( 0 ) page: 2402021 - 2402021   2023.3

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:The Japan Society of Plasma Science and Nuclear Fusion Research  

    <p>We have applied the multivariable analysis technique called the proper orthogonal decomposition (POD) to both the divertor particle flux distribution and the electron pressure distribution in the core region of LHD. The cross-correlation analysis indicates that 3rd, 4th, and 5th POD modes of the electron pressure distribution are highly correlated with the divertor footprint index which is a measure of where the peak position of the particle flux distribution is located on the inner divertor plate. Both the 3rd and 4th modes seem to correspond to the shift of the electron pressure peak position from the magnetic-axis radius. In contrast, 5th mode has a strong influence on the peripheral gradient of the electron pressure distribution. Their relationships with the divertor footprint could be explained by the finite βand the Pfirsch-Schlüter current effects.</p>

    DOI: 10.1585/pfr.18.2402021

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    CiNii Research

  22. Study of the intermittent plasma structure around the divertor simulation experimental module in GAMMA 10/PDX Reviewed

    Tanaka H., Ezumi N., Sugiyama T., Gamo H., Shigematsu N., Yoshikawa M., Kohagura J., Hirata M., Togo S., Ohno N., Sakamoto M.

    PHYSICS OF PLASMAS   Vol. 30 ( 3 ) page: 32501   2023.3

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/5.0129886

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  23. Structural Correlation of Random Lasing Performance in Plasma-Induced Surface-Modified Gallium Nitride Reviewed

    Shi Q., Fujiwara H., Kajita S., Yasuhara R., Tanaka H., Ohno N., Uehara H.

    ACS Applied Optical Materials   Vol. 1 ( 1 ) page: 412 - 420   2023.1

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    Publisher:ACS Applied Optical Materials  

    The surface of GaN has been modified by a simple method that irradiates the substrate with Ar plasma and impurity codeposition, which is termed CoDE (Co-Deposition Etching). Unique structures were formed by the assistance of a small amount of Mo deposition without degradation of the crystal structure. The size of protrusions on the structure is influenced by the amount of deposited Mo particles. The mechanism for the structure formation is discussed based on transmission electron microscopy (TEM) observations and energy dispersive X-ray spectroscopy (EDS) measurements. Based on the GaN surface roughness, we have demonstrated random laser action in the UV region under photoexcitation. The lowest threshold (0.06 J/cm2) for random lasing was observed where the size of the structure is larger than 0.05 μm2, which was formed under conditions with the least amount of deposition. The correlation between the submicro/nanosize structures generated by plasma irradiation and lasing was evaluated in detail. The critical parameter to optimize the random lasing was determined to be the size of structures that can be modified by the Mo deposition rate. The results confirmed that the emission properties can be controlled by the processing conditions. This random laser fabrication technique is expected to be widely applicable to various direct-bandgap compound semiconductors.

    DOI: 10.1021/acsaom.2c00085

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  24. Motion analysis of arc spots on tungsten fuzz by means of self-avoiding random walk model Reviewed

    Hwangbo Dogyun, Nishijima Daisuke, Kajita Shin, Ohno Noriyasu

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 62 ( SA ) page: SA1007   2023.1

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    DOI: 10.35848/1347-4065/ac79fe

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  25. Field emission current from protrusion structures formed by helium plasma with various impurity gases Reviewed

    Zhang R., Kajita S., Tanaka H., Hwangbo D., Ohno N.

    Proceedings - International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV   Vol. 2023-June   page: 529 - 532   2023

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    Publisher:Proceedings - International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV  

    Rod-like protrusion structures were formed on tungsten by helium plasma exposure with various impurity gases seeded as nitrogen (N2) and argon (Ar). Surface morphology observations and field emission current measurements were done for two samples. Cross-section observation shows that the inside of the protrusions was solid but not porous like conventional fuzz. Therefore, a new formation mechanism which is different from fuzz can be considered. The field emission current from N2-seeded case was slightly higher than that from fuzz, but much lower than that from NTBs, while the field emission current from Ar-seeded case was similar to that from NTBs. The difference in field emission current could be due to the different morphology of the tips between two samples.

    DOI: 10.23919/ISDEIV55268.2023.10200357

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  26. Thermal conductivity measurement of fuzzy W using a thermoreflectance method Reviewed

    Kajita S., Yagi T., Ohno N.

    Proceedings - International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV   Vol. 2023-June   page: 526 - 528   2023

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    Publisher:Proceedings - International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV  

    Thermophysical properties of the fuzzy nanostructured tungsten (W) layer formed by helium plasma irradiation (a) are measured using a pulsed light heating thermoreflectance method. A three layered model has been developed to explain the temporal evolution of the themoreflectance signal. The thermal conductivity of the nanostructured layer was deduced to be in the range of 0.14-0.26% of the pure (ideal) W.

    DOI: 10.23919/ISDEIV55268.2023.10200254

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  27. Use of machine learning for a helium line intensity ratio method in Magnum-PSI Reviewed International coauthorship

    Kajita Shin, Iwai Sho, Tanaka Hirohiko, Nishijima Daisuke, Fujii Keisuke, van der Meiden Hennie, Ohno Noriyasu

    NUCLEAR MATERIALS AND ENERGY   Vol. 33   page: 101281   2022.10

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    DOI: 10.1016/j.nme.2022.101281

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  28. Plasma induced surface nanostructure on semiconductors for the application of random laser Reviewed

    Shi Q., Fujiwara H., Osaka R., Kajita S., Yasuhara R., Ohno N., Uehara H.

    2022 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2022 - Proceedings     2022

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    Publisher:2022 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2022 - Proceedings  

    Unique surface nanostructures were formed on semiconductors over a large area by Ar plasma irradiation with RF sample bias. As an application of these wavelength ordered size structure, we have demonstrated a random laser emission at UV region.

    DOI: 10.1109/CLEO-PR62338.2022.10432590

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  29. POWER TRANSMISSION FACTOR FOR TUNGSTEN TARGET W/WO FIBER-FORM NANOSTRUCTURE IN H PLASMAS WITH HOT ELECTRON COMPONENT USING COMPACT PLASMA DEVICE AIT-PID Reviewed International journal

    Takamura, S; Miyamoto, T; Ohno, N

    FUSION SCIENCE AND TECHNOLOGY   Vol. 63 ( 1T ) page: 225 - 228   2013.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.13182/FST13-A16911

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  30. Simulation of dynamics of carbon dust particles in the JT-60U tokamak Reviewed International coauthorship International journal

    Tanaka, Y; Smirnov, RD; Pigarov, AY; Takenaga, H; Asakura, N; Uesugi, Y; Ohno, N

    JOURNAL OF NUCLEAR MATERIALS   Vol. 415 ( 1 ) page: S1106 - S1110   2011.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jnucmat.2010.12.237

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  31. Dusty sheaths in plasmas with two-temperature electrons Reviewed International journal

    Asano, K; Chutov, YI; Kravchenko, OY; Ohno, N; Pshenychnyj, AF; Smirnov, RD; Takamura, S

    DUSTY PLASMAS IN THE NEW MILLENNIUM   Vol. 649   page: 277 - 280   2002

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    Web of Science

  32. Generation of high heat flux plasma in divertor plasma simulator by ion cyclotron wave heating Reviewed International journal

    Watanabe, S; Ohsawa, S; Takagi, M; Ohno, N; Uesugi, Y; Takamura, S

    ICPP 96 CONTRIBUTED PAPERS - PROCEEDINGS OF THE 1996 INTERNATIONAL CONFERENCE ON PLASMA PHYSICS, VOLS 1 AND 2     page: 1050 - 1053   1997

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    Web of Science

  33. Generation of high heat flux plasmas by rf heating in divertor plasma simulator NAGDIS-II Reviewed International journal

    Watanabe, S; Ohsawa, S; Takagi, M; Ohno, N; Uesugi, Y; Takamura, S

    RADIO FREQUENCY POWER IN PLASMAS   ( 403 ) page: 483 - 486   1997

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    Web of Science

  34. STUDIES ON SHEATH FORMATION IN DIVERTOR PLASMAS BY COMPUTER-SIMULATION USING PARTICLES Reviewed International journal

    OHNO, N; MASUZAKI, S; KONNO, H; TAKAMURA, S

    CONTRIBUTIONS TO PLASMA PHYSICS   Vol. 32 ( 3-4 ) page: 249 - 254   1992

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/ctpp.2150320312

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  35. Experiments on Subharmonic Waves in an Ion Beam-Plasma System Reviewed

    Ono Noriyasu, Kasuya Toshiro, Tanaka Masayoshi, Komori Akio, Kawai Yoshinobu

      Vol. 9 ( 1 ) page: 23 - 27   1987.7

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    Language:Japanese   Publisher:Interdisciplinary Graduate School of Engineering Sciences, Kyushu University  

    Subharmonic waves are experimentally studied in detail by applying pump waves to an ion beam-plasma system. It is found that the subharmonic waves are excited in the characteristic region of the pump-wave frequency, accompanied with low-frequency fluctuations. These low-frequency fluctuations are considered to play an important role on excitation of the subharmonics.

    DOI: 10.15017/17680

    CiNii Research

  36. Recent progress of JT-60SA project toward plasma operation Reviewed International coauthorship International journal

    Shirai H., Takahashi K., Di Pietro E., Abate D., Abdel Maksoud W., Abe H., Aiba N., Abe T., Akimitsu M., Ayllon-Guerola J., Arai T., Artaud J.F., Asakura N., Ashikawa N., Balbinot L., Barabaschi P., Baulaigue O., Belonohy E., Belpane A., Bin W., Bombarda F., Bolzonella T., Bonne F., Bonotto M., Botija J., Buermans J., Cabrera-Pérez S., Cardella A., Carralero D., Carraro L., Cavalier J., Cavinato M., Chernyshova M., Chiba S., Clement-Lorenzo S., Cocilovo V., Coda S., Coelho R., Coffey I., Collin B., Corato V., Cucchiaro A., Czarski T., Dairaku M., Davis S., Day C., Dela Luna E., De Tommasi G., Decool P., Di Pace L., Dibon M., Disset G., D’Lsa F., Ejiri A., Endo Y., Ezumi N., Falchetto G., Fassina A., Fejoz P., Ferro A., Fietz W., Figini L., Fornal T., Frello G., Fujita T., Fukuda T., Fukui K., Fukumoto M., Funaba H., Furukawa M., Futatani S., Gabellieri L., Gaio E., Galazka K., Garcia J., Garcia-Dominguez J., Garcia-Lopez J., Garcia-Munoz M., Garzotti L., Gasparini F., Gharafi S., Giacomelli L., Ginoulhiac G., Giruzzi G., Giudicotti L., Gonzalez-Martin J., Guillén-González R., Hajnal N., Hall S., Hamada K., Hanada K., Hanada M., Hasegawa K., Hatakeyama S., Hauer V., Hayashi N., Hayashi T., Heller R., Hidalgo-Salaverri J., Higashijima S.

    Nuclear Fusion   Vol. 64 ( 11 )   2024.11

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    Superconducting (SC) tokamak JT-60SA plays an essential role in fusion research and development by supporting and complementing the ITER project, providing directions to the DEMO design activity and fostering next generation scientists and engineers. Since the short circuit incident at the terminal joints of equilibrium field coil #1 during the integrated commissioning (IC) in March 2021, both EU and JA implementing agencies (IAs) have examined how to ensure safe operation of JT-60SA by mitigating the risk of possible discharge occurrence inside the cryostat. Based on the experience of the global Paschen tests, the IAs have established a strategy of risk mitigation measures, which is a combination of (i) reinforcement of insulation, (ii) avoiding unnecessary voltage application to the coil systems and (iii) immediate de-energization of the coils when deteriorated vacuum conditions are detected. Thanks to the considerable efforts of the Integrated Project Team members, the IC restarted in May 2023. After confirmation of the SC state of the coil systems (TF, EF and CS), the coil energization test and the plasma operation phase 1 (OP-1) started. The first plasma was successfully achieved on 23 October 2023 with a limited value of voltage and current applied to the coils. The plasma configuration control was also confirmed with low plasma current and low auxiliary heating power conditions. Based on the IO-F4E-QST collaboration, activities of JT-60SA have been shared with the IO and provided an important lesson for ITER assembly and commissioning, and will provide an outstanding contribution to fusion research at large. After OP-1, maintenance & enhancement phase 1 (M/E-1) starts from January 2024, in which in-vessel components are installed, and heating and diagnostic systems are extensively upgraded to allow a high power heating experiment planned in OP-2. In order to make the best use of JT-60SA, a newly organized JT-60SA experiment team will refine the research plan for the future high heating power operation phase.

    DOI: 10.1088/1741-4326/ad34e4

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  37. Study of the intermittent plasma structure around the divertor simulation experimental module in GAMMA 10/PDX Invited Reviewed

    H.Tanaka, N.Ezumi, T.Sugiyama, H.Gamo, N.Shigematsu, M.Yoshikawa, J.Kohagura, M.Hirata, S.Togo N.Ohno, M.Sakamoto

    Physics of Plasmas   Vol. 30 ( 3 ) page: 10.1063/5.0129886   2023.3

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    DOI: DOI: 10.1063/5.0129886

  38. Increased Photoelectrochemical Performance of Vanadium Oxide Thin Film by Helium Plasma Treatment with Auxiliary Molybdenum Deposition Reviewed International coauthorship

    Kajita Shin, Eda Tomoki, Feng Shuangyuan, Tanaka Hirohiko, Bieberle-Hutter Anja, Ohno Noriyasu

    ADVANCED ENERGY AND SUSTAINABILITY RESEARCH   Vol. 4   page: 2200141   2023.1

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    DOI: 10.1002/aesr.202200141

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  39. Structural correlation of random lasing performance in plasma-induced surface-modified galium nitride Reviewed

    Q.Shi, H.Fujiwara, S.Kajita, R.Yasuhara H.Tanaka, N.Ohno,H.Uehara

    ACS Applied Optical Materials   Vol. 1   page: 412 - 420   2022.12

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    DOI: doi.org/10.1021/acsaom.2c00085

  40. Corrigendum to “Photoelectrochemical properties of plasma-induced nanostructured tungsten oxide” [Appl. Surf. Sci. 580 (2022) 151979] (Applied Surface Science (2022) 580, (S0169433221030166), (10.1016/j.apsusc.2021.151979)) Invited Reviewed

    S.Feng, S.Kajita, M.Higashi, A.Bieberle-Hutter, T.Yoshida, N.Ohno

    Applied Surface Science   Vol. 599   page: 153668   2022.10

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    DOI: DOI: 10.1016/j.apsusc.2022.153668

  41. Reduction of pulsed particle load with dynamic pressure induced by transient recycled neutral flux Reviewed International coauthorship International journal

    Hayashi Y., Tanaka H., Ohno N., Kajita S., Morgan T., van der Meiden H., Scholten J., Vernimmen J., Natsume H., Sawada K., Masuda S.

    Plasma Physics and Controlled Fusion   Vol. 64 ( 10 ) page: 105013   2022.9

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    DOI: 10.1088/1361-6587/ac8acb

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  42. Bidirectional reflectance distribution function of recrystallized tungsten mono-block exposed to cyclic heat loading Reviewed International journal

    Natsume H., Nojiri K., Kajita S., Fukuda M., Ushiki T., Tanaka H., Sugie T., Kitazawa S.i., Kikuchi T., Yokozuka T., Ohno N., Ezato K., Hatae T.

    Nuclear Materials and Energy   Vol. 33   page: 101243   2022.9

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    DOI: 10.1016/j.nme.2022.101243

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  43. Fuzz Growth Process under He-W Co-Deposition Conditions Reviewed International coauthorship International journal

    SHEN Wanqi, KAJITA Shin, TANAKA Hirohiko, SHI Quan, OHNO Noriyasu

    Plasma and Fusion Research   Vol. 17 ( 0 ) page: 1302094 - 1302094   2022.8

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    <p>Helium (He)-Tungsten (W) co-deposition experiments were conducted in the linear plasma device Co-NAGDIS at a temperature of 1223 K to observe the characteristics of fuzz growth on the W surface with auxiliary W deposition. The dependence on the deposition rate of W was investigated and a clear difference in fuzz thickness was found between He-only and co-deposition experiments. In addition, the fuzz structures on a single sample exhibited a spatially nonuniform distribution, which was probably caused by the nonuniformity in the deposition rate.</p>

    DOI: 10.1585/pfr.17.1302094

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    CiNii Research

  44. Measurement of the Bidirectional Reflectance Distribution Function of Tungsten Surface Sputtered in Argon Plasma Reviewed

    H.Natsume, K.Nojiri, S.Kajita, T.Ushiki, T.Sugie, S.Kitazawa, T.Kikuchi, T.Yokozuka, H.Tanaka, N.Ohno, T.Hatae

    Plasma and Fusion Research:Regular Articles   Vol. 17   page: 2405041   2022.5

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    DOI: DOI: 10.1585/pfr.17.2405041

  45. Isotope Effect for Plasma Detachment in Helium and Hydrogen/Deuterium Mixture Plasmas Reviewed International journal

    GUO Xinyue, TANAKA Hirohiko, KAJITA Shin, OHNO Noriyasu, HATTORI Shogo, SAWADA Keiji

    Plasma and Fusion Research   Vol. 17 ( 0 ) page: 2402027 - 2402027   2022.5

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    <p>To investigate the isotope effect on the plasma detachment in helium (He) and hydrogen (H)/deuterium (D) mixture plasmas, we performed H<sub>2</sub>, D<sub>2 </sub>or He gas puffing into He plasma in the linear plasma device NAGDIS-II. Axial distributions of electron density (<i>n</i><sub>e</sub>) and electron temperature (<i>T</i><sub>e</sub>) were obtained using a movable Langmuir probe. Additionally, optical emission spectroscopy (OES) was applied to measure axial distributions of Balmer lines and He I lines. When the neutral gas pressure was high (Δ<i>P<sub>n </sub></i>= 7 ∼10 mTorr), <i>n</i><sub>e </sub>distribution in He-D<sub>2 </sub>mixture plasma was similar to that in pure He plasma, showing a sharp decrease at the downstream region where <i>T</i><sub>e </sub>< 1 eV. In contrast, in He-H<sub>2 </sub>mixture plasma, a decrease in <i>n</i><sub>e </sub>was confirmed from upstream region where <i>T</i><sub>e </sub>> 1 eV. The upstream H<sub>α</sub>/H<sub>γ </sub>in He-H<sub>2 </sub>plasma was significantly larger than the D<sub>α</sub>/D<sub>γ </sub>in He-D<sub>2 </sub>plasma at the same <i>T</i><sub>e</sub>. This result indicated that molecular activated recombination (MAR) processes significantly occurred in He-H<sub>2 </sub>plasma, while electron-ion recombination (EIR) processes were dominant in He-D<sub>2 </sub>and pure He plasmas.</p>

    DOI: 10.1585/pfr.17.2402027

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    CiNii Research

  46. Study of optical emission spectroscopy in dual frequency synchronized pulsed capacitively coupled discharges with DC bias at low-pressure in Ar/O2/C4F8 plasma etching Reviewed International coauthorship

    B.B,Sahu, K.Nakane, K.Ishikawa, M.Sekine, T.Tsutsumi, T.Gohira, Y.Ohya, N.Ohno, M.Hori

    Physical Chemistry Chemical Physics   Vol. 24   page: 13883 - 13896   2022.5

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    DOI: doi.org/10.1039/D2CP00289B

  47. Changes in morphology and field emission property of nano-tendril bundles after high temperature annealing Reviewed International coauthorship International journal

    Zhang R., Kajita S., Hwangbo D., Sinelnikov D., Tanaka H., Ohno N.

    Nuclear Materials and Energy   Vol. 31   page: 101178   2022.4

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    DOI: 10.1016/j.nme.2022.101178

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  48. An approach to implement a heat flux limit in a model for fusion relevant plasmas Reviewed International coauthorship

    M.Z.Tokar, M.Kobayashi, N.Ohno

    Physics of Plasmas   Vol. 29   page: 32502   2022.3

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    DOI: 10.1063/5.0079524

  49. Completion of JT-60SA construction and contribution to ITER Reviewed International coauthorship International journal

    Kamada Y., Di Pietro E., Hanada M., Barabaschi P., Ide S., Davis S., Yoshida M., Giruzzi G., Sozzi C., Abdel Maksoud W., Abe H., Aiba N., Akiyama T., Ayllon-Guerola J., Arai T., Artaud J.F., Asakura N., Ashikawa N., Balbinot L., Bando T., Baulaigue O., Belonohy E., Bin W., Bombarda F., Bolzonella T., Bonne F., Bonotto M., Botija J., Cabrera-Pérez S., Cardella A., Carraro L., Cavalier J., Chernyshova M., Chiba S., Clement-Lorenzo S., Cocilovo V., Coda S., Coelho R., Coffey I., Collin B., Corato V., Cucchiaro A., Czarski T., Dairaku M., Davis S., Day C., de la Luna E., De Tommasi G., Decool P., Di Pace L., Di Pietro E., Dibon M., Disset G., Ejiri A., Endo Y., Ezumi N., Falchetto G., Fassina A., Fejoz P., Ferro A., Fietz W., Figini L., Fornal T., Frello G., Fujita T., Fukuda T., Fukui K., Fukumoto M., Furukawa M., Futatani S., Gabellieri L., Gaio E., Galazka K., Garcia J., Garcia-Dominguez J., Garcia-Lopez J., Garcia-Munoz M., Garzotti L., Gasparini F., Gharafi S., Giacomelli L., Ginoulhiac G., Giruzzi G., Giudicotti L., Guillén González R., Hajnal N., Hall S., Hamada K., Hanada K., Hanada M., Hasegawa K., Hatae T., Hatakeyama S., Hauer V., Hayashi N., Hayashi T., Heller R., Higashijima S., Hinata J.

    Nuclear Fusion   Vol. 62 ( 4 ) page: 42002   2022.3

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    DOI: 10.1088/1741-4326/ac10e7

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  50. Nitrogen Atom Density Measurements in NAGDIS-T Using Vacuum Ultraviolet Absorption Spectroscopy Reviewed

    NISHIO Ryosuke, KAJITA Shin, TANAKA Hirohiko, ASAOKA Koji, TSUTSUMI Takayoshi, HORI Masaru, OHNO Noriyasu

    Plasma and Fusion Research   Vol. 17 ( 0 ) page: 1201004 - 1201004   2022.1

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    <p>For the development of a high nitrogen atom density source, we produced nitrogen plasmas and measured the nitrogen atom density using vacuum ultraviolet absorption spectroscopy (VUVAS) at high neutral gas pressure (>1.5 mTorr) and discharge power (>500 W) in the NAGDIS-T, which could generate spiral-shaped dissociative recombining plasmas. It was seen that the nitrogen atom density increases with increasing neutral gas pressure and discharge power, and it reached 6.2 × 10<sup>17 </sup>m<sup>−3</sup>. In the low gas pressure case, the estimated atom density was confirmed to be consistent with that measured by the actinometry method.</p>

    DOI: 10.1585/pfr.17.1201004

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  51. Plasma induced surface nanostructure on semiconductors for the application of random laser Reviewed

    Shi Q., Fujiwara H., Osaka R., Kajita S., Yasuhara R., Ohno N., Uehara H.

    Optics InfoBase Conference Papers     2022

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    Unique surface nanostructures were formed on semiconductors over a large area by Ar plasma irradiation with RF sample bias. As an application of these wavelength ordered size structure, we have demonstrated a random laser emission at UV region.

    DOI: 10.1364/CLEOPR.2022.CFP8J_02

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  52. Photoelectrochemical properties of plasma-induced nanostructured tungsten oxide Reviewed International coauthorship International journal

    Feng S., Kajita S., Higashi M., Bieberle-Hütter A., Yoshida T., Ohno N.

    Applied Surface Science   Vol. 580   page: 151979(7 pp)   2021.12

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    DOI: 10.1016/j.apsusc.2021.151979

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  53. Growth of Mo Large-Scale Fiberform Nanostructures Reviewed

    Kajita Shin, Okuyama Tatsuki, Tanaka Hirohiko, Ohno Noriyasu

    PLASMA AND FUSION RESEARCH   Vol. 16 ( 0 ) page: 1206105 - 1206105   2021.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:一般社団法人 プラズマ・核融合学会  

    <p>We performed helium (He) plasma irradiation to molybdenum (Mo) substrate with auxiliary Mo deposition. Different from W cases, large-scale fiberform nanostructure (LFN) growth did not occur easily. The experiments suggested that the experimental condition of Mo LFN growth has a much narrower conditional window than that of fuzz growth or another hidden control factor exists for LFN growth.</p>

    DOI: 10.1585/pfr.16.1206105

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  54. Penetration of deuterium into neutron-irradiated tungsten under plasma exposure Reviewed

    Miyuki Yajima, Yuji Hatano, Vladimir Alimov, Takeshi Toyama, Tatsuya Kuwabara, Thomas Schwarz-Selinger, Yasuhisa Oya, Alexander Spitsyn, Noriyasu Ohno

    Physica Scripta   Vol. 96 ( 12 ) page: 124042   2021.10

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    DOI: 10.1088/1402-4896/ac2c20

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    Other Link: https://iopscience.iop.org/article/10.1088/1402-4896/ac2c20/pdf

  55. The dependence of Mo ratio on the formation of uniform black silicon by helium plasma irradiation Reviewed International coauthorship

    Shi Quan, Kajita Shin, Feng Shuangyuan, Ohno Noriyasu

    JOURNAL OF PHYSICS D-APPLIED PHYSICS   Vol. 54 ( 40 ) page: 405202   2021.10

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    DOI: 10.1088/1361-6463/ac1190

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  56. Enhanced photocatalytic ethylene decomposition with anatase-rutile mixed nanostructures formed by He plasma treatment Reviewed

    Kajita S., Miyaguchi K., Tanaka H., Yasunaga E., Yoshida T., Ohno N.

    Journal of Photochemistry and Photobiology A: Chemistry   Vol. 418   page: 113420(8 pp)   2021.9

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    DOI: 10.1016/j.jphotochem.2021.113420

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  57. Thermal treatment of W large-scale fiberform nanostructures Reviewed

    Kajita Shin, Okuyama Tatsuki, Tanaka Hirohiko, Kuwabara Tatsuya, Ohno Noriyasu, Yoshida Naoaki

    PHYSICA SCRIPTA   Vol. 96 ( 9 )   2021.9

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    DOI: 10.1088/1402-4896/ac0866

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  58. Enhancement of Arc Ignition on Tungsten in Helium Plasmas with Impurity Gases Reviewed International coauthorship

    ZHANG Rongshi, KAJITA Shin, HWANGBO Dogyun, TANAKA Hirohiko, OHNO Noriyasu

    Plasma and Fusion Research   Vol. 16 ( 0 ) page: 24045069(5 pp) - 2405069   2021.5

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    DOI: 10.1585/pfr.16.2405069

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  59. Modeling of the impurity-induced silicon nanocone growth by low energy helium plasma irradiation Reviewed International coauthorship

    Q Shi, S Kajita, S Dai, S Feng, N Ohno

    Plasma Science and Technology   Vol. 23 ( 4 ) page: 45503   2021.4

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    DOI: 10.1088/2058-6272/abea71

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  60. Influence of Nitrogen Ratio on Plasma Detachment during Combined Seeding with Hydrogen on Divertor Simulation Experiment of GAMMA 10/PDX Reviewed

    GAMO Hiroki, HWANGBO Dogyun, SAKAMOTO Mizuki, PERILLO Renato, KUWABARA Tatsuya, TANAKA Hirohiko, OHNO Noriyasu, SAWADA Keiji, TONEGAWA Akira, MASUZAKI Suguru, EZUMI Naomichi, SUGIYAMA Tsukasa, NOJIRI Kunpei, KONDO Ayane, HIRATA Mafumi, KOHAGURA Junko, YOSHIKAWA Masayuki, NAKASHIMA Yousuke

    Plasma and Fusion Research   Vol. 16 ( 0 ) page: 2402041 - 2402041   2021.3

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    DOI: 10.1585/pfr.16.2402041

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  61. Computer Tomography on Divertor Impurity Monitor for ITER with Miinimizing Errors in a Logarithmic Scale Invited Reviewed International coauthorship

    H.Natsume, S.Kajita, V.S.Neverov, R.I.Khusnutdinov, E.Veshchev, M.DE Rock, A.R.Polevoi, H.Tanaka, N.Ohno, H.Ogawa, S.Kitazawa

    Plasma and Fusion Research   Vol. 16 ( 0 ) page: 2405019 - 2405019   2021.3

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    DOI: 10.1585/pfr.16.2405019

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  62. Particle-in-cell-Monte Carlo collision simulation and experimental measurement of Ar plasma in a fast atom beam source for surface-activated bonding Reviewed International journal

    R.Morisaki, T.Yamazaki, C.Oka, J.Sakurai, T.Hirai, T.Takahashi, H.Tsuji, N.Ohno, S.Hata

    Japanese Journal of Applied Physics   Vol. 60 ( SC ) page: SCCB01   2021.3

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    DOI: 10.35848/1347-4065/abe683

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  63. Doppler and Stark Broadenings of He II Emission in NAGDIS-PG Invited Reviewed

    S.Kajita, T.Nakamori, H.Tanaka, Y.Kikuchi, N.Ohno

    Plasma and Fusion Research: Rapid Communications   Vol. 16 ( 0 ) page: 1202013 - 1202013   2021.2

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    DOI: 10.1585/pfr.16.1202013

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  64. Fabrication of nanostructured Ti thin film with Ti deposition in He plasmas Reviewed

    Miyaguchi Kazuya, Kajita Shin, Tanaka Hirohiko, Ohno Noriyasu

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 60 ( 3 ) page: 038004(4 pp)   2021.2

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    DOI: 10.35848/1347-4065/abe3a5

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  65. Accelerated/reduced growth of tungsten fuzz by deposition of metals Reviewed International coauthorship

    S. Kajita, T. Morgan, H. Tanaka, Y. Hayashi, N. Yoshida, D. Nagata, J. Vernimmen, S. Feng, R. Zhang, N. Ohno

    Journal of Nuclear Materials   Vol. 548   page: 152844   2021.1

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    DOI: 10.1016/j.jnucmat.2021.152844

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  66. Tungsten Large-Scale Fiberform Nanostructures Retained under High Temperature Conditions Reviewed

    T.Okuyama, S.Kajita, N.Yoshida, H.Tanaka, T.Kuwabara, N.Ohno

    PLASMA AND FUSION RESEARCH   Vol. 16   page: 1206001   2021.1

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    DOI: 10.1585/pfr.16.1206001

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  67. Experimental observations and modelling of radiation asymmetries during N<inf>2</inf> seeding in LHD Reviewed International coauthorship

    B.J. Peterson, G.Kawamura, P.L. van de Giessen, K.Mukai, H.Tanaka, R.Sano, S.N. Pandya, S.Y. Dai, S. Masuzaki, T. Akiyama, M. Kobayashi, M. Goto, G. Motojima, R. Sakamoto, N. Ohno, T. Morisaki, J. Miyazawa, the LHD Experiment Group

    Nuclear Materials and Energy   Vol. 26   page: 100848   2020.12

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    DOI: 10.1016/j.nme.2020.100848

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  68. Experimental observations and modelling of radiation asymmetries during Ne and N2 seeding in LHD Invited Reviewed International coauthorship

    B.J. Peterson, G. Kawamura, P.L. van de Giessen, K. Mukai, S. Borling, H. Tanaka, R. Sano, S. N. Pandya, S. Y. Dai, S. Masuzaki, T. Akiyama, M. Kobayashi, M. Goto, G. Motojima, R. Sakamoto, N. Ohno, T. Morisaki, J. Miyazawa and the LHD Experiment Group

    Nuclear Materials and Energy   Vol. 26   page: 100848   2020.12

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    DOI: doi.org/10.1016/j.nme.2020.100848

  69. Unipolar arc plasmas on nanostructured tungsten surfaces under perpendicular magnetic field Reviewed International coauthorship

    D.Hwangbo, D.Nishijima, S.Kajita, R.Doerner, N.Ohno

    PLASMA SOURCES SCIENCE & TECHNOLOGY   Vol. 29 ( 12 ) page: 125015   2020.12

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    DOI: 10.1088/1361-6595/abc817

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  70. Dynamics of Hydrogen Isotope Absorption and Emission of Neutron-Irradiated Tungsten Reviewed International coauthorship

    T.Toyama, M.Yajima, N.Ohno, T.Kuwabara, V.Kh.Alimov, Y.Hatano

    PLASMA AND FUSION RESEARCH   Vol. 15   page: 150581(7 pp)   2020.11

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    DOI: 10.1585/pfr.15.1505081

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  71. Plasma Potential Measurement in Detached Plasmas by Emissive Probe Considering Space-Charge-Limited Effect Reviewed

    S.Hattori, H.Tanka, S.Kajita, N.Ohno

    PLASMA AND FUSION RESEARCH   Vol. 15   page: 1301082(4 pp)   2020.11

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    DOI: 10.1585/pfr.15.1301082

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  72. Size distribution of nano-tendril bundles with various additional impurity gases Reviewed

    R. Zhang, D. Hwangbo, S. Kajita, H. Tanaka, N. Ohno

    NUCLEAR MATERIALS AND ENERGY   Vol. 25   page: 100843   2020.11

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    DOI: 10.1016/j.nme.2020.100843

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  73. Tungsten fuzz: Deposition effects and influence to fusion devices Reviewed

    S Kajita, N Yoshida, N Ohno

    NUCLEAR MATERIALS AND ENERGY   Vol. 25   page: 100828   2020.11

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    DOI: 10.1016/j.nme.2020.100828

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  74. Cross-field transport in detached helium plasmas in Magnum-PSI Reviewed International coauthorship

    H.Tanaka, Y.Hayashi, S.Kajita, H.J. van der Meiden, M.Yoshikawa, J.W.M.Vernimmen, J.Scholten, I.Classen, T.W.Morgan, N.Ohno

    PLASMA PHYSICS AND CONTROLLED FUSION   Vol. 62 ( 11 ) page: 115021 (14pp)   2020.10

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    DOI: 10.1088/1361-6587/abb88f

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  75. Nano-tendril bundles behavior under plasma-relevant electric fields Reviewed

    V.V.Kulagin, D.N.Sinelnikov, D.G.Bulgadaryan, N.E.Efimov, V.A.Kurnaev, D.Hwangbo, N.Ohno, S.Kajita

    VACUUM   Vol. 183   page: 109799   2020.10

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    DOI: 10.1016/j.vacuum.2020.109799

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  76. Evaluation of axial decay length of plasma pressure in detached plasma Reviewed

    H.Tanaka, N.Ohno, S.Kajita, H.Takano, S.Hattori, Y.Imaeda

    NUCLEAR MATERIALS AND ENERGY   Vol. 25   page: 100812(5 pp)   2020.10

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    DOI: 10.1016/j.nme.2020.100812

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  77. Detached helium plasma simulation by a one-dimensional fluid code with detailed collisional-radiative model Reviewed

    H.Tanaka, I.Saeki, N.Ohno, S.Kajita, T.Ido, H. Natsume, A.Hatayama, K.Hoshino, K.Sawada, M.Goto

    PHYSICS OF PLASMAS   Vol. 27 ( 10 ) page: 102505   2020.10

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    DOI: 10.1063/5.0015912

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  78. Dust Formation from Arc Spots on Nanostructured Tungsten Surface Reviewed International coauthorship

    M.Yajima, S.Kajita, N.Ohno, S.Masuzaki, N.Yoshida, D.U.B.Assems, T.W.Morgan, K.Bystrovc, H, van der Meiden

    PLASMA AND FUSION RESEARCH   Vol. 15   page: 1205061(3 pp)   2020.8

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    DOI: 10.1585/pfr.15.1205061

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  79. Atomic nitrogen density measurements by actinometry method in the toroidal device NAGDIS-T Reviewed

    S.Kajita, K.Asaoka, H.Tanaka, R.Nishio, T.Tsutsumi, M.Hori, N.Ohno

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 59 ( 8 ) page: 086002(6 pp)   2020.8

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    DOI: 10.35846/1347-4065/aba456

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  80. Effect of temperature and incident ion energy on nanostructure formation on silicon exposed to helium plasma Reviewed International coauthorship

    M.Thompson, Q.Shi, S.Kajita, N.Ohno, C.Corr

    PLASMA PROCESSES AND POLYMERS   Vol. 17 ( 12 ) page: e2000126(7 pp)   2020.8

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    DOI: 10.1002/ppap.202000126

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  81. Thin film and noble metal loading effects on the photocatalytic reactivity of helium-plasma-induced nanostructured tungsten oxides Reviewed

    S.Feng, S.Kajita, T.Yoshida, N.Ohno, D.Nagata, M.Tokitani

    MATERIALS RESEARCH EXPRESS   Vol. 7   page: 75007   2020.7

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    DOI: 10.1088/2053-1591/aba394

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  82. The influence of impurities on the formation of nanocone structures on silicon surface irradiated by low energy helium plasma Reviewed

    Q.Shi, S. Kajita, N. Ohno, M.Tokitani, D.Nagata, S. Feng

    JOURNAL OF APPLIED PHYSICS   Vol. 128 ( 2 ) page: 23301   2020.7

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    DOI: 10.1063/5.0010416

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  83. Helium-W co-deposition layer: TEM observation and D retention Reviewed

    S.Kajita, K.Asai, N.Ohno, H. Tanaka, N.Yoshida, D. Nagata, M. Yajima

    JOURNAL OF NUCLEAR MATERIALS   Vol. 540   page: 152350   2020.7

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    DOI: 10.1016/j.jnucmat.2020.152350

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  84. Spatiotemporal dynamics of cross-field ejection events in recombining detached plasma Reviewed

    H.Tanaka, S.Kajita, H.Natsume, I.Saeki, N.Ohno

    PLASMA PHYSICS AND CONTROLLED FUSION   Vol. 62 ( 7 ) page: 075011(10 pp)   2020.6

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    DOI: 10.1088/1361-6587/ab8e19

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  85. Application of dynamic mode decomposition to rotating structures in detached linear plasmas Reviewed

    H.Natsume, H. Tanaka, S. Kajita, N.Ohno

    PHYSICS OF PLASMAS   Vol. 27 ( 4 ) page: 42301   2020.4

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    DOI: 10.1063/1.5134869

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  86. Modifications of WNOx films by keV D and H ions Reviewed

    N.Matsunami, N.Ohno, M. Tokitani, B. Tsuchiya, M. Sataka, S. Okayasu

    SURFACE & COATINGS TECHNOLOGY   Vol. 394   page: 125798   2020.4

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    DOI: 10.1016/j.surfcoat.2020.125798

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  87. Inspection of Arc Trails Formed in Stellarator/Heliotron Devices W7-X and LHD Reviewed International coauthorship

    Hwangbo Dogyun, Kajita Shin, Dhard Chandra Prakash, Tokitani Masayuki, Krause Marco, Naujoks Dirk, Masuzaki Suguru, Klose Soeren, Ohno Noriyasu

    PLASMA AND FUSION RESEARCH   Vol. 15   page: 2402012   2020.3

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    DOI: 10.1585/pfr.15.2402012

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  88. Helium irradiation effects on the surface modification and recrystallization of tungsten Reviewed International coauthorship

    Khan A, De Temmerman G, Kajita S, Greuner H, Balden M, Hunger K, Ohno N, Hwangbo D, Tomita Y, Tokitani M, Nagata D, Yajima M

    PHYSICA SCRIPTA   Vol. T171 ( 1 ) page: 14050   2020.3

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    DOI: 10.1088/1402-4896/ab52c6

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  89. Microstructure and Retention in He-W Co-Deposition Layer Reviewed

    K.Asai, N.Yoshida, N.Ohno, S.Kajita, H.Tanaka, M.Yajima, D.Nagata

    PLASMA AND FUSION RESEARCH   Vol. 15   page: 1201004   2020.2

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    DOI: 10.1585/pfr.15.1201004

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  90. Growth of nano-fibers on HCP-metals by He plasma irradiation Reviewed

    S.Kajita, T.Nojima, Y.Yamamoto, N.Yoshida, T.Okuyama, T.Kuwabara, N.Ohno

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 59 ( SH ) page: SHHA03   2020.2

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    DOI: 10.7567/1347-4065/ab5bbf

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  91. First EMC3-EIRENE modelling of JT-60SA edge plasmas with/without resonant magnetic perturbation field Reviewed International coauthorship

    H.Tanaka, G.Kawamura, K.Hoshino, M.Kobayashi, G.Matsunaga, Y.Suzuki, T.Lunt, Y.Feng, N.Ohno

    CONTRIBUTIONS TO PLASMA PHYSICS   Vol. 60 ( 5-6 ) page: e201900114   2020.2

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    DOI: 10.1002/ctpp.201900114

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  92. Dynamics of the changes in the parameters of the arc plasma during the destruction of a helium-induced tungsten fuzz by arc pulses Reviewed International coauthorship

    S. A.Barengolts , D.Hwangbo , S.Kajita , N.Ohno , V. P.Frolova , A. G.Nikolaev , E. M.Oks , D. L.Shmelev , M. M.Tsventoukh , G. Yu Yushkov

    NUCLEAR FUSION   Vol. 60 ( 4 ) page: 44001   2020.2

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    DOI: 10.1088/1741-4326/ab73c3

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  93. Photocatalytic application of helium plasma induced nanostructured tungsten oxides Reviewed

    S.Feng, S.Kajita, Y.Tomita, T.Yoshida, N.Ohno

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 59 ( SA ) page: SAAB04(6 pp)   2019.11

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    DOI: 10.7567/1347-4065/ab4601

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  94. Helium-plasma–induced straight nanofiber growth on HCP metals Reviewed

    S.Kajita, T.Nojima, T.Okuyama, Y.Yamamoto, N.Yoshida, N.Ohno

    Acta Materialia   Vol. 181   page: 342 - 351   2019.10

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    © 2019 Acta Materialia Inc. Low-energy helium (He) plasma irradiations were conducted on ruthenium (Ru) and rhenium (Re), which have hexagonal close packed (HCP) crystal structures. Growth of linear shaped fiberform nanostructures were identified on the surfaces of the both metals after the He plasma irradiation. We also conducted He plasma irradiation while Re particles were deposited on tungsten substrate; 3-mm-thick large scale fiberform nanostructures were grown on the surface. The crystal orientation was analyzed using diffraction patterns of Re and Ru nanofibers together with detailed transmission electron microscope observations. It was found that the growth of linear nanofibers has a preferential crystal orientation in the growth direction and it is always in the c-direction of the HCP crystals. Potential growth processes and mechanisms are proposed based on the experimental observations.

    DOI: 10.1016/j.actamat.2019.09.053

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  95. Field Emission From Nanostructured Tendril Bundles Reviewed International coauthorship

    D.Sinelnikov, D.Bulgadaryan, D.Hwangbo, S.Kajita, V.Kumaev, N.Ohno

    IEEE TRANSACTIONS ON PLASMA SCIENCE   Vol. 47 ( 11 ) page: 5186 - 5190   2019.10

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    DOI: 10.1109/TPS.2019.2942725

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  96. Kinetics of deuterium penetration into neutron-irradiated tungsten under exposure to high flux deuterium plasma Reviewed

    M. Yajima, Y. Hatano, N. Ohno, T. Kuwabara, T. Toyama, M. Takagi, K. Suzuki

    Nuclear Materials and Energy   Vol. 21   page: 100699   2019.8

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    © 2019 The Authors The objective of this study is to investigate the effects of neutron (n) irradiation on hydrogen isotope transport in tungsten (W). W samples were irradiated with neutrons in a fission reactor and then exposed to high flux deuterium (D) plasma at 563 K in a linear plasma device. The fraction of D release increased with increasing exposure time. In addition, the D retention in n-irradiated W increased in proportion to the square root of the plasma exposure time. These observations were explained by increase in the penetration depth of D with filling up displacement damages acting as strong trapping sites.

    DOI: 10.1016/j.nme.2019.100699

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  97. Application of Ion Sensitive Probe to High Density Plasmas in Magnum-PSI Reviewed International coauthorship

    Y.Hayashi, N.Ohno, H.van der Meiden, J.Scholten, S.Kajita, J.van der Berg, R.Perillo, J.Vernimmen, T.Moragan

    PLASMA AND FUSION RESEARCH   Vol. 14   page: 1202135(3 pp)   2019.7

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    DOI: 10.1585/pfr.14.1202135

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  98. Spatial and temporal measurement of recombining detached plasmas by laser Thomson scattering Reviewed

    S. Kajita, H. Ohshima, H. Tanaka, M. Seki, H. Takano, N. Ohno

    PLASMA SOURCES SCIENCE & TECHNOLOGY   Vol. 28   page: 105015 (9pp)   2019.7

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    DOI: 10.1088/1361-6595/ab318d

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  99. Photocatalytic decomposition of ethylene using He plasma induced nano-TiO<inf>2</inf> Reviewed

    S.Kajita, Y.Tomita, E.Yasunaga, T.Yoshida, K.Miyaguchi, H.Tanaka, N.Ohno

    Japanese Journal of Applied Physics   Vol. 58   page: 070903(4 pp)   2019.6

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    © 2019 The Japan Society of Applied Physics. Ethylene decomposition via photocatalytic reaction using ultra-violet light was performed using an oxidized titanium (Ti) sheet and/or thin film samples fabricated by helium (He) plasmas treatments. We prepared nanostructured Ti samples formed by He plasma irradiation and additional thin film deposited samples using radio frequency magnetron sputtering. The samples prepared in this study had a slightly lower photocatalytic activity compared to the thin film deposited on tungsten nanostructure samples previously reported; the anatase formation was solely identified on Ti sheet samples and is hopeful for further improvement of photocatalytic activity of plasma treated titania.

    DOI: 10.7567/1347-4065/ab2830

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  100. Fabrication of a nanostructured TiO<inf>2</inf> photocatalyst using He plasma-irradiated tungsten and ethylene gas decomposition Reviewed

    Y.Tomita, S.Kajita, E.Yasunaga, T.Yoshida, N.Ohno, H.Tanaka

    Japanese Journal of Applied Physics   Vol. 58 ( SE ) page: SEEG01(6 pp)   2019.5

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    © 2019 The Japan Society of Applied Physics. Decomposition of ethylene gas by a photocatalyst is an environmentally friendly and sustainable process. We fabricated titanium dioxide thin films deposited on nanostructured tungsten substrates formed by exposure to helium plasma and evaluated their photocatalytic performance. The nanostructures were maintained even after sputtering and annealing, and the proportion of tungsten inside the thin film increased with increasing oxidation temperature. The photocatalytic activity was improved due to formation of the nanostructure.

    DOI: 10.7567/1347-4065/ab09c8

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  101. Investigation of recombination front region in detached plasmas in a linear divertor plasma simulator Reviewed International coauthorship

    N.Ohno, M.Seki, H.Ohshima, H.Tanaka, S.Kajita, Y.Hayashi, H.Natsume, H.Takano, I.Saeki, M.Yoshikawa, H.van der Meiden

    Nuclear Materials and Energy   Vol. 19   page: 458 - 462   2019.5

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    We have investigated detailed plasma structure around the recombination front region (RFR), where volume electron-ion recombination (EIR) strongly occurs in detached plasmas, by using two-dimensional (2D) movable probe system as well as laser Thomson scattering diagnostics. The 2D distribution of electron density, electron temperature, and plasma potential around the RFR, has been revealed for the first time. The spatial distribution of the particle loss rate due to EIR estimated from electron temperature and electron density profiles indicated that the three-dimensional structure of the RFR adopts a cone structure. Furthermore, in the peripheral region of the RFR, the radial profile of the electron density was widened locally with increasing cross-field transport caused by plasma fluctuation. From the heat transport analysis of electrons, it was found that the thermal relaxation process between electrons and ions is important for the cooling of electrons, and that the convection of electrons regulates electron heat transport near the RFR.

    DOI: 10.1016/j.nme.2019.03.010

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  102. Generation of Spiral Shape Nitrogen Recombining Plasma for Atomic Nitrogen Source Reviewed

    K. Asaoka, N. Ohno, Y. Hayashi, S. Kajita, and H. Tanaka

    Plasma and Fusion Research   Vol. 14   page: 3401069(4 pp)   2019.4

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    DOI: 10.1585/pfr.14.3401069

  103. Characterization of He induced nanostructures using SEM image analysis Reviewed

    H.Tanaka, S.Kajita, N.Ohno

    Plasma and Fusion Research   Vol. 14 ( Specialissue2 ) page: 3402049(6 pp)   2019.4

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    © 2019 The Japan Society of Plasma Science and Nuclear Fusion Research. Helium induced nanostructures on tungsten were characterized by applying basic statistical analysis techniques to scanning electron microscope (SEM) images. As the analysis targets, pinhole- and fuzz-dominant surfaces irradiated with different ion fluences were employed. Although two-dimensional Fourier analysis of the normalized brightness of SEM images clarified several characteristic features, their differences are small to distinguish the dominant nanostructures. On the other hand, probability density functions (PDFs) of the normalized brightness indicate that hole- and fuzz-dominant surfaces have long tail and Gaussian-like shape, respectively. By using several indexes with considering the black and white saturation, it was found that kurtosis and Kullback- Leibler divergence could provide reasonable judgement as the characterization index.

    DOI: 10.1585/pfr.14.3402049

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  104. Synergistic effect of nitrogen and hydrogen seeding gases on plasma detachment in the GAMMA 10/PDX tandem mirror Reviewed

    N.Ezumi, T.Iijima, M.Sakamoto, Y.Nakashima, M.Hirata, M.Ichimura, R.Ikezoe, T.Imai, T.Kariya, I.Katanuma, J.Kohagura, R.Minami, T.Numakura, M. Yoshikawa, S. Togo, MD S.Islam, MD M.Islam, K.Nojiri, A.Terakado, S.Jang, Y.Kinoshita, T.Mikami, S.Yamashita, T.Yoshimoto, T.Hara, A.Hatayama, K.Ichimura, S.Kado, S.Masuzaki, T.Nakano, N.Ohno, K. Sawada, H. Tanaka, A.Tonegawa and R.Perillo

    Nuclear Fusion   Vol. 59   page: 060030   2019.4

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  105. Ignition and Behavior of Arc Spots on Helium Irradiated Tungsten under Fusion Relevant Condition Reviewed

    S.Kajita, D.Hwangbo, N.Ohno

    IEEE Transactions on Plasma Science   Vol. 47 ( 8 ) page: 3909 - 3916   2019.4

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    © 1973-2012 IEEE. In nuclear fusion reactors, unipolar arcing is a longstanding plasma surface interaction issue. In this paper, short summaries of morphology changes by helium plasma irradiation under fusion relevant conditions and ignition of arcing on the He irradiated surfaces are given. Helium plasma irradiation leads to surface morphology changes, and arcing can be ignited on the surface in response to pulsed heat load accompanied by plasma instabilities. Then, we focused on arcing ignited on large-scale fiberform nanostructures (LFNs) formed with deposition of metallic particles together with helium-ion irradiation. Dusts release from the arc spot and the amount of material erosion are discussed based on the experiments.

    DOI: 10.1109/TPS.2019.2908193

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  106. Analysis of indefinite divertor footprint with proper orthogonal decomposition in hydrogen/deuterium plasmas in LHD Reviewed

    H.Tanaka, S.Masuzaki, G.Kawamura, M.Kobayashi, Y.Suzuki, T.Morisaki, N.Ohno LHD Experimental Group

    Nuclear Materials and Energy   Vol. 19   page: 378 - 383   2019.3

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    DOI: 10.1016/j.nme.2019.03.014

  107. Increased energy absorption into W due to the metal deposited layer from an ELM-like pulsed plasma Reviewed

    T.Nakamori, N.Ohno, H.Tanaka, S.Kajita, Y.Kikuchi, T.Akiyama

    Plasma and Fusion Research   Vol. 14   page: 1401051(5 pp)   2019.3

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    © 2019 The Japan Society of Plasma Science and Nuclear Fusion Research. It is important in divertor physics research to investigate thermal response process of beryllium deposited tungsten to high transient heat load such as ELMs. We investigated the heat load on aluminum-coated tungsten by comparing the measured back surface temperature and calculation results of the one-dimensional heat conduction equation. When the plasma power was low enough so that the evaporation did not occur sufficiently, the heat load on the aluminum-coated tungsten was higher than the virgin tungsten. It was caused by the reduction in the energy reflection coefficient due to the formation of aluminum layer. The results suggested that the beryllium deposited layer adversely affects the heat load on the divertor plate when the heat load was not high such as Grassy-ELM.

    DOI: 10.1585/pfr.14.1401051

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  108. Double-probe measurement in recombining plasma using NAGDIS-II Reviewed

    Y. Hayashi, H. Nishikata, N. Ohno, S. Kajita, H. Tanaka, H. Ohshima, M. Seki

    Contributions to Plasma Physics   Vol. 59 ( 7 ) page: e201800088   2019.2

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    © 2019 WILEY-VCH Verlag GmbH &amp; Co. KGaA, Weinheim We have studied the validity of the double-probe method in recombining plasmas. Electron temperature (Te) measured with a double probe was quantitatively evaluated by taking into account the influences of plasma potential fluctuation, plasma resistivity, and electron density fluctuation on the current–voltage characteristics. Differential potential fluctuation and plasma resistivity between two electrodes have a minor effect on Te especially when the inter-distance is small (typically 1 mm). Scattering of measured Te due to the density fluctuation was sufficiently suppressed by making the data acquisition time long (typically 4 s) and taking the average. There is a good agreement between Te measured with the optimized double-probe method and that with laser Thomson scattering diagnostics.

    DOI: 10.1002/ctpp.201800088

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  109. Development of Thomson scattering measurement system for Upstream plasmas in the NAGDIS-II device Reviewed

    H.Takano, H.Ohshima, S.Kajita, H.Tanaka, N.Ohno

    Plasma and Fusion Research   Vol. 14 ( Specialissue1 ) page: 2405031(4 pp)   2019.2

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    © 2019 The Japan Society of Plasma Science and Nuclear Fusion Research. A new laser Thomson scattering (LTS) measurement system in the upstream region of the linear plasma device NAGDIS-II is established in addition to the recently introduced LTS in the downstream. Further, horizontal distributions of the electron temperature and electron density were compared with those obtained from the Langmuir probe, indicating plasma disturbance due to the insertion of the probe head. We discuss the variation of the electron energy distribution function at upstream and downstream in the recombining plasma.

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  110. Growth of membrane nanostructures on W co-deposition layer Reviewed

    S. Kajita, N. Yoshida, S. Kawaguchi, H. Tanaka, N. Ohno, D. Nagata, M. Tokitani

    Nuclear Materials and Energy   Vol. 18   page: 339 - 344   2019.2

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    © 2019 The Authors Large-scale mm thick fiberform nanostructures are grown when materials are subjected to high flux helium ions with tungsten particles (ions and neutrals) precipitation. Observations of the large-scale fiberform nanostructures (LFNs) were conducted by scanning electron microscope (SEM) and transmission electron microscope (TEM) analyses. In particular, this study focuses on membrane nanostructures. Membranes that contain He bubbles were always observed when LFNs covered the surface. We discuss the growth process of the membrane structures based on detailed observations.

    DOI: 10.1016/j.nme.2019.02.004

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  111. Spatiotemporal Structure of Hα Emission from the Detached Plasma in GAMMA 10/PDX Reviewed

    H.Tanaka, M.Sakamoto, N.Ezumi, A.Terakado, K.Nojiri, T.Mikami, Y.Kinoshita, K.Kobayashi, M.Yoshikawa, J. Kohagura, N.Ohno

    Plasma and Fusion Research: Regular Articles   Vol. 14   page: 2402036(5 pp)   2019.2

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    DOI: 10.1585/pfr.14.2402036

  112. Growth process of nano-tendril bundles with sputtered tungsten Reviewed

    D. Hwangbo, S. Kajita, H. Tanaka, and N. Ohno

    Nuclear Materials and Energy   Vol. 18   page: 250 - 257   2019.1

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    © 2019 The Authors Nano-tendril bundles (NTBs) were generated in DC He plasma with impurity gas-seeding (Ne and N 2 ) under sputtering-dominated conditions. NTB morphologies were characterized using the net erosion yield of samples. NTBs’ height and area were analyzed and ion fluence dependence was discussed. For both impurities, the number of NTBs increased steadily with increasing the fluence. It was revealed that NTB can be generated newly and continuously regardless of ion fluence. Surface observations suggested that micro-protrusions can evolve into NTBs. The effect of re-deposition of W was discussed based on SEM observations. Line-of-sight deposition seemed to play a key role of W feeder to enable NTBs to grow greater.

    DOI: 10.1016/j.nme.2019.01.008

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  113. Multipoint measurements employing a microwave interferometer and a Langmuir probe in the detached linear plasma Reviewed

    H. Natsume, H. Tanaka, S. Kajita, M. Yoshikawa, M. Seki, H. Ohshima, and N. Ohno

    AIP ADVANCES   Vol. 9   page: 015016 (6pp)   2019.1

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    DOI: 10.1063/1.5081929

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  114. Influence of heavier impurity deposition on surface morphology development and sputtering behavior explored in multiple linear plasma devices Reviewed International coauthorship

    D.Nishijima, A.Kreter, M.Baldwin, D.Borodin, A.Eksaeva, D.Hwangbo, S.Kajita, M.Miyamoto, N.Ohno, M.Patino, A.Psopieszczyk, M.Rasinski, T.Schlummer, A.Terra, R.P.Doerner

    NUCLEAR MATERIALS AND ENERGY   Vol. 18   page: 67 - 71   2019.1

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    DOI: 10.1016/j.nme.2018.12.008

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  115. Spatiotemporal Structure of H alpha Emission from the Detached Plasma in GAMMA 10/PDX Reviewed

    H.Tanaka, M.Sakamoto, N.Ezumi, A.Terakado, K.Nojiri, T.Mikami, Y.Kinoshita, K.Kobayashi, M.Yoshikawa, J. Kohagura, N.Ohno

    PLASMA AND FUSION RESEARCH   Vol. 14 ( Specialissue1 ) page: 2402036(5 pp)   2019.1

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    DOI: 10.1585/pfr.14.2402036

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  116. Effect of Damage Introduction and He Existence on D Retention in Tungsten by High Flux D Plasma Exposure Reviewed

    Yasuhisa Oya, Keisuke Azuma, Akihiro Togari, Moeko Nakata, Qilai Zhou, Mingzhong Zhao, Tatsuya Kuwabara, Noriyasu Ohno, Miyuki Yajima, Yuji Hatano, Takeshi Toyama

    Lecture Notes in Networks and Systems   Vol. 53 ( 8 ) page: 89 - 96   2019

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    DOI: 10.1007/978-3-319-99834-3_12

  117. Proton scattering from tungsten fuzz

    D. Bulgadaryan, D. Sinelnikov, V. Kurnaev, S. Kajita, D. Hwangbo, N. Ohno

    Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms   Vol. 434   page: 9 - 12   2018.11

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    © 2018 Elsevier B.V. Tungsten fuzz is a nanostructure formed on tungsten surface under helium plasma impact. In this work, we investigate this structure using the scattering of keV-energy protons. Energy spectra of scattered protons have double-peak shape that corresponds to the scattering from fuzz and underlying pure tungsten. The energy losses of protons in fuzz are estimated as the difference between primary beam energy and the energy corresponding to the local minimum between two peaks. Computer simulations with SRIM code also demonstrate double-peak shape of energy spectra of protons scattered from fuzzy target. Fuzz and pure tungsten stopping powers for protons are compared and fuzz density relative to pure tungsten is estimated and discussed. Evolution of H+energy spectra during fuzz irradiation by Ar+beam is measured and discussed.

    DOI: 10.1016/j.nimb.2018.07.038

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  118. Plasma exhaust and divertor studies in Japan and Europe broader approach, DEMO design activity Reviewed International coauthorship

    N.Asakura, K.Hoshino , H.Utoh, Y.Someya, S.Suzuki, C.Bachmann, H.Reimerdes, R.Wenninger, H.Kudo, S.Tokunaga, Y.Hommai, Y.Sakamoto, R.Hiwatari, K.Tobita, Jeong-Ha You, G.Federici, K.Ezato, Y.Seki, ...N.Ohno

    FUSION ENGINEERING AND DESIGN   Vol. 136   page: 1214 - 1220   2018.11

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    DOI: 10.1016/j.fusengdes.2018.04.104

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  119. Characterized divertor footprint profile modification with the edge pressure gradient in the Large Helical Device Reviewed

    Tanaka H., Masuzaki S., Kawamura G., Kobayashi M., Suzuki Y., Motojima G., Murase T., Morisaki T., Ohno N.

    PLASMA PHYSICS AND CONTROLLED FUSION   Vol. 60 ( 12 ) page: 125001   2018.10

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    DOI: 10.1088/1361-6587/aae2d7

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  120. Morphologies of co-depositing W layer formed during He plasma irradiation Reviewed

    Kajita Shin, Kawaguchi Shota, Yoshida Naoaki, Ohno Noriyasu, Tanaka Hirohiko

    NUCLEAR FUSION   Vol. 58 ( 10 ) page: 106002   2018.10

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    DOI: 10.1088/1741-4326/aad24e

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  121. One-Step Plasma Synthesis of Nb<inf>2</inf>O<inf>5</inf> Nanofibers and their Enhanced Photocatalytic activity Reviewed

    S.Kajita, F.Mimuro, T.Yoshida, N.Ohno, N.Yoshida

    ChemPhysChem   Vol. 19 ( 23 ) page: 3237 - 3246   2018.9

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    © 2018 Wiley-VCH Verlag GmbH &amp; Co. KGaA, Weinheim Fiberform nanostructured niobium (Nb) was fabricated by one step helium (He) plasma irradiation. He ion implantation formed He nano-bubbles on a Nb plate and led to formation of protrusions while migrating in Nb matrix; fiberform nanostructures (FN) were grown when the fluence became high (&gt;1026 m−2). The necessary conditions for the formation of Nb FN were revealed to be the surface temperature range of 900–1100 K and the incident ion energy higher than 70 eV. The sample was oxidized at 573–773 K in an air atmosphere, and Pt nanoparticles were photo-deposited on the Nb2O5 samples. The surface was analyzed by scanning electron microscope, transmission electron microscope, x-ray photoelectron spectroscopy, and ultraviolet-visible spectrophotometry. Photocatalytic activity of the fabricated materials was studied using methylene blue (MB) decolorization process. An enhanced photocatalytic performance was identified on FN Nb2O5 substrate with Pt deposition.

    DOI: 10.1002/cphc.201800769

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  122. Growth of nano-tendril bundles on tungsten with impurity-rich He plasmas Reviewed

    Hwangbo Dogyun, Kajita Shin, Ohno Noriyasu, McCarthy Patrick, Bradley James W, Tanaka Hirohiko

    NUCLEAR FUSION   Vol. 58 ( 9 ) page: 096022   2018.9

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    DOI: 10.1088/1741-4326/aacd1f

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  123. Thomson Scattering Measurement of Two Electron Temperature Components in Transition to Detached Plasmas Reviewed

    Ohshima Hiroshi, Kajita Shin, Tanaka Hirohiko, Ohno Noriyasu, Van der Meiden Hennie J

    PLASMA AND FUSION RESEARCH   Vol. 13   page: 1201099   2018.8

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    DOI: 10.1585/pfr.13.1201099

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  124. Effect of the Nanostructured Layer Thickness on the Dynamics of Cathode Spots on Tungsten Reviewed International coauthorship

    S.A. Barengolts, V.G. Mesyats, M. M. Tsventoukh, S.Kajita, D.Hwangbo, N.Ohno

    IEEE Transactions on Plasma Science   Vol. 46 ( 11 ) page: 4044 - 4050   2018.8

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    IEEE Experimental data on the effect of the thickness of a nanostructured layer present on the surface of a tungsten cathode on its arcing properties have been analyzed. It has been shown that if the nanostructured layer is not completely destroyed as a result of the operation of a cathode spot cell, the spot ``sinks&#039;&#039; in the layer, the spot cells group together, and the trajectory of the spot motion becomes ``entangled.&#039;&#039; To interpret the experimental results, the grouping of arc spot cells was simulated using a random walk model based on the Monte Carlo method into which an attractive force was introduced and assuming that the cell plasma density, i.e., the cell initiation probability, is proportional to 1/r&amp;#x00B2;, where r is the distance between two spot cells. It has been demonstrated that spot cells are entangled, forming a group and moving together when the attractive force between them is strong enough. When this force decreases and the directionality of the cells increases as the cathode spot shifts to a lower thickness region of the nanostructured layer, the velocity of motion of the spot increases and its trace left on the surface becomes narrower.

    DOI: 10.1109/TPS.2018.2859953

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  125. Blob- and hole-like structures outstanding during the transition from attached to detached divertor states in GAMMA 10/PDX Reviewed

    Tanaka, H, Sakamoto, M, Ezumi, N, Nojiri, K, Terakado, A, Mikami, T, Kinoshita, Y, Kobayashi, K, Yoshikawa, M, Kohagura, J, Ohno, N

    PHYSICS OF PLASMAS   Vol. 25 ( 8 ) page: 082505(6 pp)   2018.8

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    DOI: 10.1063/1.5040800

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  126. Localized spiraling plasma ejection contributing the ion-flux broadening in the detached linear plasma Reviewed

    Tanaka, H, Takeyama, K, Yoshikawa, M, Kajita, S, Ohno, N, Hayashi, Y

    PLASMA PHYSICS AND CONTROLLED FUSION   Vol. 60 ( 7 ) page: 075013   2018.7

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    DOI: 10.1088/1361-6587/aac0d8

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  127. Ignition and erosion of materials by arcing in fusion-relevant conditions Reviewed

    Hwangbo Dogyun, Kajita Shin, Barengolts Sergey A, Tsventoukh Mikhail M, Kawaguchi Shota, Mesyats Vadim G, Ohno Noriyasu

    CONTRIBUTIONS TO PLASMA PHYSICS   Vol. 58 ( 6-8 ) page: 608 - 615   2018.7

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    DOI: 10.1002/ctpp.201700157

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  128. Helium line emission spectroscopy in recombining detached plasmas Reviewed

    Shin Kajita, Kensuke Suzuki, Hirohiko Tanaka, Noriyasu Ohno

    Physics of Plasmas   Vol. 25 ( 6 ) page: 063303   2018.6

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    Line emissions from helium (He) plasmas have been used for measurement of electron density and temperature in various situations. We performed measurements of He line intensities in recombining plasmas in a divertor simulator, followed by discussion of some potential difficulties of using the line intensity ratio (LIR) method in a divertor environment under detached conditions. When using four line emissions (501.6, 667.8, 706.5, and 728.1 nm), the discrepancy of the results compared to results from the laser Thomson scattering (LTS) method increased along with increasing gas pressure. However, the LIR method agreed well with LTS when a recombination sensitive line emission (447.1 nm) was added. The influence of the transport of metastable atoms is also discussed. Additionally, anomalous characteristics of the LIR method were revealed in hydrogen helium mixture plasmas when the temperature was in the range of 1-4 eV. These anomalies were likely attributable to the dissociative recombination of HeH+.

    DOI: 10.1063/1.5029414

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  129. Nanostructure Growth on Rhodium/Ruthenium by the Exposure to He Plasma Reviewed

    Tomohiro NOJIMA, Shin KAJITA, Naoaki YOSHIDA, Shota KAWAGUCHI, Noriyasu OHNO, Hirohiko TANAKA, Masayuki TOKITANI, Daisuke NAGATA, Tsuyoshi AKIYAMA, Takashi YAGI

    Plasma and Fusion Research   Vol. 13   page: 3406064   2018.6

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    DOI: 10.1585/pfr.13.3406065

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  130. Mode Structure Analysis of Detached Plasmas with 2D Images Reviewed

    Kajita Shin, Tanaka Hirohiko, Ohno Noriyasu, Onda Takuya

    PLASMA AND FUSION RESEARCH   Vol. 13   page: 1402033(5 pp)   2018.5

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    DOI: 10.1585/pfr.13.1402033

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  131. Fabrication of photocatalytically active vanadium oxide nanostructures via plasma route Reviewed

    Shin Kajita, Tomoko Yoshida, Noriyasu Ohno, Yusuke Ichino, Naoaki Yoshida

    Journal of Physics D: Applied Physics   Vol. 51 ( 21 ) page: 215201   2018.4

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    Plasma irradiation was used to create nanostructured vanadium oxide with potential commercial and industrial applications. Morphology changes were induced at the nano- and micro-meter scale, accompanied by the growth of helium nanobubbles. Micrometer-sized pillars, cube-shaped nanostructures, and fuzzy fiberform nanostructures were grown on the surface
    the necessary conditions in terms of the incident ion energy and the surface temperature for those morphology changes were revealed. Hydrogen production experiments using a photocatalytic reaction with aqueous methanol solution were conducted on the fabricated samples. Enhanced H2 production was confirmed with the plasma irradiated nanostructured sample that had been oxidized in air atmosphere. Photocatalytically inactive vanadium oxide exhibited a high photocatalytic activity after nanostructurization of the surface by helium plasma irradiation.

    DOI: 10.1088/1361-6463/aabe44

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  132. Fuzzy nanostructure growth on precious metals by He plasma irradiation Reviewed

    Shin Kajita, Tomohiro Nojima, Yudai Tomita, Noriyasu Ohno, Hirohiko Tanaka, Naoaki Yoshida, Miyuki Yajima, Tsuyoshi Akiyama, Masayuki Tokitani, Takashi Yagi

    Surface and Coatings Technology   Vol. 340   page: 86 - 92   2018.4

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    Growth of helium bubbles near the surface of metals leads to various morphology changes when sufficient helium ions are continuously implanted on the surface. In this study, low energy (&lt
    100 eV) helium plasma irradiations to various noble metals were conducted, and consequent surface morphology changes were analyzed. It was found that fiberform nanostructures were formed by the helium plasma irradiation on rhodium and ruthenium thin films, which were deposited by magnetron sputtering, and on platinum and iridium wires. Growth of fiberform structures were not identified on gold, silver, and palladium samples exposed to helium plasmas even though the irradiations were conducted at various surface temperatures, though pinholes were observed on palladium surface. We discussed the relation between the morphology changes and material properties.

    DOI: 10.1016/j.surfcoat.2018.02.026

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  133. Pulsation Effects of Incident Ion Energy on W Fuzz Growth Reviewed

    Kajita Shin, Kawaguchi Shota, Hwangbo Dogyun, Tanaka Hirohiko, Ohno Noriyasu

    PLASMA AND FUSION RESEARCH   Vol. 13   page: 1205001   2018.1

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    DOI: 10.1585/pfr.13.1205001

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  134. Measurement of He neutral temperature in detached plasmas using laser absorption spectroscopy Reviewed

    Aramaki M., Tsujihara T., Kajit S., Tanaka H., Ohno N.

    AIP ADVANCES   Vol. 8 ( 1 ) page: 015308   2018.1

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    DOI: 10.1063/1.4997840

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  135. Analysis of ELM stability with extended MHD models in JET, JT-60U and future JT-60SA tokamak plasmas Reviewed

    Aiba N., Pamela S., Honda M., Urano H., Giroud C., Delabie E., Frassinetti L., Lupelli I., Hayashi N., Huijsmans G.T.A., Litaudon X., Abduallev S., Abhangi M., Abreu P., Afzal M., Aggarwal K.M., Ahlgren T., Ahn J.H., Aho-Mantila L., Airila M., Albanese R., Aldred V., Alegre D., Alessi E., Aleynikov P., Alfier A., Alkseev A., Allinson M., Alper B., Alves E., Ambrosino G., Ambrosino R., Amicucci L., Amosov V., Sundén E.A., Angelone M., Anghel M., Angioni C., Appel L., Appelbee C., Arena P., Ariola M., Arnichand H., Arshad S., Ash A., Ashikawa N., Aslanyan V., Asunta O., Auriemma F., Austin Y., Avotina L., Axton M.D., Ayres C., Bacharis M., Baciero A., Baião D., Bailey S., Baker A., Balboa I., Balden M., Balshaw N., Bament R., Banks J.W., Baranov Y.F., Barnard M.A., Barnes D., Barnes M., Barnsley R., Wiechec A.B., Orte L.B., Baruzzo M., Basiuk V., Bassan M., Bastow R., Batista A., Batistoni P., Baughan R., Bauvir B., Baylor L., Bazylev B., Beal J., Beaumont P.S., Beckers M., Beckett B., Becoulet A., Bekris N., Beldishevski M., Bell K., Belli F., Bellinger M., Belonohy , Ayed N.B., Benterman N.A., Bergsåker H., Bernardo J., Bernert M., Berry M., Bertalot L., Besliu C., Beurskens M.

    Plasma Physics and Controlled Fusion   Vol. 60 ( 1 )   2018.1

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    The stability with respect to a peelingballooning mode (PBM) was investigated numerically with extended MHD simulation codes in JET, JT-60U and future JT-60SA plasmas. The MINERVA-DI code was used to analyze the linear stability, including the effects of rotation and ion diamagnetic drift (w∗i), in JET-ILW and JT-60SA plasmas, and the JOREK code was used to simulate nonlinear dynamics with rotation, viscosity and resistivity in JT-60U plasmas. It was validated quantitatively that the ELM trigger condition in JET-ILW plasmas can be reasonably explained by taking into account both the rotation and w∗i effects in the numerical analysis. When deuterium poloidal rotation is evaluated based on neoclassical theory, an increase in the effective charge of plasma destabilizes the PBM because of an acceleration of rotation and a decrease in w∗i. The difference in the amount of ELM energy loss in JT-60U plasmas rotating in opposite directions was reproduced qualitatively with JOREK. By comparing the ELM affected areas with linear eigenfunctions, it was confirmed that the difference in the linear stability property, due not to the rotation direction but to the plasma density profile, is thought to be responsible for changing the ELM energy loss just after the ELM crash. A predictive study to determine the pedestal profiles in JT-60SA was performed by updating the EPED1 model to include the rotation and w∗i effects in the PBM stability analysis. It was shown that the plasma rotation predicted with the neoclassical toroidal viscosity degrades the pedestal performance by about 10% by destabilizing the PBM, but the pressure pedestal height will be high enough to achieve the target parameters required for the ITER-like shape inductive scenario in JT-60SA.

    DOI: 10.1088/1361-6587/aa8bec

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  136. Enhanced growth of large-scale nanostructures with metallic ion precipitation in helium plasmas Reviewed

    Shin Kajita, Shota Kawaguchi, Noriyasu Ohno, Naoaki Yoshida

    Scientific Reports   Vol. 8   page: 56   2018.1

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    Helium plasma irradiation on metal surfaces leads to the formation of metallic fuzzy nanostructures accompanied by the growth of helium bubbles in metals. The mechanism of the growth process, its impact for fusion devices, and potential application have been explored. Here we show enhanced growth of large-scale fuzz by precipitating additional metallic particles during helium plasma irradiation. The growth rate of the fuzzy structures became orders of magnitude greater than conventional fuzz growth
    in an hour of irradiation, 1 mm-thick visible tungsten and molybdenum fuzzy fur structures covered a tungsten metal substrate. Additional precipitation of metallic ions breaks the bottleneck diffusion process
    moreover, further acceleration in the growth rate could have occurred if the electric sheath shape was influenced by the grown structure and the electric field that formed around the structure started collecting ions.

    DOI: 10.1038/s41598-017-18476-7

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  137. Morphology Changes of Platinum and Tungsten Carbide by He Plasma Irradiation Reviewed

    Tomita Yudai, Kajita Shin, Ohno Noriyasu, Tanaka Hirohiko, Ichino Yusuke

    PLASMA AND FUSION RESEARCH   Vol. 13   page: 3406074   2018

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    DOI: 10.1585/pfr.13.3406074

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  138. Recent progress of divertor simulation research using the GAMMA 10/PDX tandem mirror Reviewed

    Nakashima Y, Ichimura K, Islam M. S, Sakamoto M, Ezumi N, Hirata M, Ichimura M, Ikezoe R, Imai T, Kariya T, Katanuma I, Kohagura J, Minami R, Numakura T, Yoshikawa M, Iijima T, Islam M. M, Nojiri K, Shimizu K, Terakado A, Togo S, Asakura N, Fukumoto M, Hatayama A, Hirooka Y, Kado S, Kubo H, Masuzaki S, Matsuura H, Nakano T, Nagata S, Nishino N, Ohno N, Sagara A, Sawada K, Shoji M, Tonegawa A, Ueda Y

    NUCLEAR FUSION   Vol. 57 ( 11 )   2017.11

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    © 2017 IAEA, Vienna. This paper describes the recent progress in divertor simulation research using the GAMMA 10/PDX tandem mirror towards the development of divertors in fusion reactors. During a plasma flow generation experiment in the end cell of the GAMMA 10/PDX, ICRF heating in the anchor cell successfully extended the particle flux up to 3.3 1023 m2 s-1. Superimposing the short pulse of the ECH also attained a maximum heat flux of ∼30 MW m-2. We have succeeded in achieving and characterizing the detachment of the high-temperature plasma, which is equivalent to the SOL plasma of tokamaks, by using the divertor simulation experimental module (D-module) in the GAMMA 10/PDX end cell, in spite of using a linear device with a short magnetic field line connection length. Various gases (Ar, Xe, Ne and N2) are examined to evaluate the effect of radiation cooling against the plasma flow at the MW m-2 level in the divertor simulation region and the following results are obtained: (i) Xe gas was most effective in the reduction of heat and particle fluxes (1%, 3%, respectively) and has a stronger effect on electron cooling (down to ∼1.6 eV) in the used gas species. (ii) Ne gas was less effective. On the other hand, (iii) N2 gas showed more favorable effects than Ar in the lower pressure range. These results will contribute to the progress in detached plasma operation and in clarifying the radiation cooling mechanism towards the development of future divertors.

    DOI: 10.1088/1741-4326/aa7cb4

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  139. Development of a Compact Divertor Plasma Simulator for Plasma-Wall Interaction Studies on Neutron-Irradiated Materials Reviewed

    N.Ohno, T.Kuwabara, M.Takagi, R.Nishimura, M.Yajima, A.Sagara, T.Toyama, K.Suzuki, H.Kurishita, T.Shikama, Y.Hatano, N.Yoshida

    Plasma and Fusion Research   Vol. 12 ( 0 ) page: 1405040 - 1405040   2017.10

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    DOI: 10.1585/pfr.12.1405040

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  140. Studies of power exhaust and divertor design for a 1.5 GW-level fusion power DEMO Reviewed

    N.Asakura, K.Hoshino, S.Suzuki, S.Tokunaga, Y.Someya, H.Utoh, H.Kudo, Y.Sakamoto, R.Hiwatari, K.Tobita, K.Shimizu, K.Ezato, Y.Seki, N.Ohno, Y.Ueda, Joint Special Team for DEMO Design

    Nuclear Fusion   Vol. 57   page: 126050(12 pp)   2017.10

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    DOI: 10.1088/1741-4326/aa867a

  141. Plasma Exhaust and Divertor Studies in JA and EU Broader Tokamak Fusion Reactor Approach, DEMO Design Activity Reviewed

    Nobuyuki Asakura, Kazuo Hoshino, Hiroyasu Utoh, Yoji Someya, Satoshi Suzuki, Christian Bachmann, Holger Reimerdes, Hironobu Kudo, Shinsuke Tokunaga, Yuki Homma, Yoshiteru Sakamoto, Ryoji Hiwatari, Ronald Wenninger, Kenji Tobita, Noriyasu Ohno,Gianfranco Federici, Koichiro Ezato, Yohji Seki, Noriyasu Ohno, Yoshio Ueda

        2017.9

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  142. Extension of the operational regime of the LHD towards a deuterium experiment Reviewed

    Takeiri Y., Morisaki T., Osakabe M., Yokoyama M., Sakakibara S., Takahashi H., Nakamura Y., Oishi T., Motojima G., Murakami S., Ito K., Ejiri A., Imagawa S., Inagaki S., Isobe M., Kubo S., Masamune S., Mito T., Murakami I., Nagaoka K., Nagasaki K., Nishimura K., Sakamoto M., Sakamoto R., Shimozuma T., Shinohara K., Sugama H., Watanabe K. Y., Ahn J. W., Akata N., Akiyama T., Ashikawa N., Baldzuhn J., Bando T., Bernard E., Castejon F., Chikaraishi H., Emoto M., Evans T., Ezumi N., Fujii K., Funaba H., Goto M., Goto T., Gradic D., Gunsu Y., Hamaguchi S., Hasegawa H., Hayashi Y., Hidalgo C., Higashiguchi T., Hirooka Y., Hishinuma Y., Horiuchi R., Ichiguchi K., Ida K., Ido T., Igami H., Ikeda K., Ishiguro S., Ishizaki R., Ishizawa A., Ito A., Ito Y., Iwamoto A., Kamio S., Kamiya K., Kaneko O., Kanno R., Kasahara H., Kato D., Kato T., Kawahata K., Kawamura G., Kisaki M., Kitajima S., Ko W. H., Kobayashi M., Kobayashi S., Kobayashi T., Koga K., Kohyama A., Kumazawa R., Lee J. H., Lopez-Bruna D., Makino R., Masuzaki S., Matsumoto Y., Matsuura H., Mitarai O., Miura H., Miyazawa J., Mizuguchi N., Moon C., Morita S., Moritaka T., Mukai K., Muroga T., Muto S., Mutoh T., Nagasaka T., Nagayama Y., Nakajima N., Nakamura Y., Nakanishi H., Nakano H., Nakata M., Narushima Y., Nishijima D., Nishimura A., Nishimura S., Nishitani T., Nishiura M., Nobuta Y., Noto H., Nunami M., Obana T., Ogawa K., Ohdachi S., Ohno M., Ohno N., Ohtani H., Okamoto M., Oya Y., Ozaki T., Peterson B. J., Preynas M., Sagara S., Saito K., Sakaue H., Sanpei A., Satake S., Sato M., Saze T., Schmitz O., Seki R., Seki T., Sharov I., Shimizu A., Shiratani M., Shoji M., Skinner C., Soga R., Stange T., Suzuki C., Suzuki Y., Takada S., Takahata K., Takayama A., Takayama S., Takemura Y., Takeuchi Y., Tamura H., Tamura N., Tanaka H., Tanaka K., Tanaka M., Tanaka T., Tanaka Y., Toda S., Todo Y., Toi K., Toida M., Tokitani M., Tokuzawa T., Tsuchiya H., Tsujimura T., Tsumori K., Usami S., Velasco J. L., Wang H., Watanabe T. -H., Watanabe T., Yagi J., Yajima M., Yamada H., Yamada I., Yamagishi O., Yamaguchi N., Yamamoto Y., Yanagi N., Yasuhara R., Yatsuka E., Yoshida N., Yoshinuma M., Yoshimura S., Yoshimura Y.

    NUCLEAR FUSION   Vol. 57 ( 10 )   2017.8

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    DOI: 10.1088/1741-4326/aa7fc2

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  143. Erosion of nanostructured tungsten by laser ablation, sputtering and arcing Reviewed

    Dogyun Hwangbo, Shota Kawaguchi, Shin Kajita, Noriyasu Ohno

    Nuclear Materials and Energy   Vol. 12   page: 386 - 391   2017.8

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    Mass loss of nanostructured tungsten, which was formed by helium plasma irradiation, due to laser ablation, sputtering, and arcing was investigated. Below the helium sputtering energy threshold (&lt
    117 eV), sputtering by impurity gases such as nitrogen and oxygen was dominant. Sputtering yield became closer to theoretical value with increasing the incident ion energy, and sputtering by helium ions became the major contribution when the energy was &gt
    200 eV. Reduction in sputtering on nanostructured surface was observed. Arcing was initiated using laser pulses, and the erosion rate by arcing was measured. The erosion rate increased with arc current, while the erosion per Coulomb was not affected by arc current.

    DOI: 10.1016/j.nme.2017.03.004

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  144. Measuring temperature effects on nano-bubble growth in tungsten with grazing incidence small angle X-ray scattering Reviewed

    Matt Thompson, Russ Doerner, Noriyasu Ohno, Nigel Kirby, Patrick Kluth, Daniel Riley, Cormac Corr

    Nuclear Materials and Energy   Vol. 12   page: 1294 - 1297   2017.8

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    W samples were exposed to He plasma in the MAGPIE, NAGDIS-II and PISCES-A across a range of sample temperatures between 473–1123 K. GISAXS was used to quantify the effect of plasma fluence and W surface temperature on He nano-bubble size distributions. In NAGDIS-II at 873 K nano-bubbles are exponentially distributed with mean diameters μ=0.64±0.01nm, similar to the value of μ=0.62±0.01nmfound for the MAGPIE plasma device at the much lower temperature of 473 K. Above ∼900 K nano-bubbles followed an approximately exponential distribution with μ &gt
    0.72 nm demonstrating a significant increase in nano-bubble sizes at higher temperatures.

    DOI: 10.1016/j.nme.2016.11.025

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  145. A Particle-In-Cell approach to particle flux shaping with a surface mask Reviewed

    Kawamura G, Ohno N, Takamura S, Tomita Y

    NUCLEAR MATERIALS AND ENERGY   Vol. 12   page: 297 - 301   2017.8

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    DOI: 10.1016/j.nme.2016.12.017

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  146. Toroidally symmetric/asymmetric effect on the divertor flux due to neon/nitrogen seeding in LHD Reviewed

    H. Tanaka, G. Kawamura, S. Masuzaki, M. Kobayashi, T. Akiyama, B.J. Peterson, K. Mukai, R. Sano, S.Y. Dai, R. Sakamoto, T. Morisaki, N. Ohno, LHD Experiment Group

    Nucl. Mater. Energy   Vol. 12   page: 241 - 246   2017.8

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    DOI: 10.1016/j.nme.2016.12.020

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  147. Molecular activated recombination in divertor simulation plasma on GAMMA 10/PDX Reviewed

    Sakamoto M, Terakado A, Nojiri K, Ezumi N, Nakashima Y, Sawada K, Ichimura K, Fukumoto M, Oki K, Shimizu K, Ohno N, Masuzaki S, Togo S, Kohagura J, Yoshikawa M

    NUCLEAR MATERIALS AND ENERGY   Vol. 12   page: 1004 - 1009   2017.8

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    DOI: 10.1016/j.nme.2017.05.001

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  148. Fractality and growth of He bubbles in metals Reviewed

    Shin Kajita, Atsushi M. Ito, Noriyasu Ohno

    PHYSICS LETTERS A   Vol. 381 ( 29 ) page: 2355 - 2362   2017.8

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    Pinholes are formed on surfaces of metals by the exposure to helium plasmas, and they are regarded as the initial process of the growth of fuzzy nanostructures. In this study, number density of the pinholes is investigated in detail from the scanning electron microscope (SEM) micrographs of tungsten and tantalum exposed to the helium plasmas. A power law relation was identified between the number density and the size of pinholes. From the slope and the region where the power law was satisfied, the fractal dimension D and s(min), which characterize the SEM images, are deduced. Parametric dependences and material dependence of D and s(min) are revealed. To explain the fractality, simple Monte-Carlo simulations including random walks of He atoms and absorption on bubble was introduced. It is shown that the initial position of the random walk is one of the key factors to deduce the fractality. The results indicated that new nucleations of bubbles are necessary to reproduce the number-density distribution of bubbles. (C) 2017 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.physleta.2017.05.028

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  149. Field Emission From Metal Surfaces Irradiated With Helium Plasmas Reviewed International coauthorship

    Dogyun Hwangbo, Shin Kajita, Noriyasu Ohno, Dmitry Sinelnikov

    IEEE TRANSACTIONS ON PLASMA SCIENCE   Vol. 45 ( 8 ) page: 2080 - 2086   2017.8

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    Field electron emission from metal (tungsten, molybdenum, and tantalum) surfaces with different surface morphology was measured. Fuzz and loop samples had small increment in the emission current, whereas bubble samples marked huge increment in the current, accompanied by breakdown. The emission current became greater on the fuzzy samples than the loop samples probably because of more elongated morphology of fuzzy fiber. Among the materials, molybdenum had the lowest current. From Fowler-Nordheim plot analysis, it was revealed that fuzz samples had higher field enhancement factor than loop samples. Bubble samples marked the highest value in the field enhancement factor among the three types of morphology, likely due to the continuous emission from the craters formed after the breakdown. Molybdenum showed favorable properties in terms of suppressing the field emission and preventing the breakdown and the arcing in fusion reactor. From the scanning electron microscope observation, the size of the crater increases with the emission current on the bubble samples. Fuzzy structure was observed at the crater on the tantalum bubble surface after breakdown even without stationary plasma irradiation or stationary incidence of ion flux.

    DOI: 10.1109/TPS.2017.2679211

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  150. Effects of modified surfaces produced at plasma-facing surface on hydrogen release behavior in the LHD Reviewed

    Nobuta Y, Masuzaki S, Tokitani M, Ashikawa N, Nagata D, Yoshida N, Oya Y, Yajima M, Motojima G, Kasahara H, Miyamoto M, Ohno N, Yamauchi Y

    NUCLEAR MATERIALS AND ENERGY   Vol. 12   page: 483 - 487   2017.8

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    DOI: 10.1016/j.nme.2017.02.025

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  151. Behavior of 23S metastable state He atoms in low-temperature recombining plasmas Reviewed

    S.Kajita, T.Tsujihara, M.Aramaki, H.van der Meiden, H.Oshima, N.Ohno, H.Tanaka, R.Yasuhara, T.Akiyama, K.Fujii, T.Shikama

    Physics of Plasmas   Vol. 24   page: 073301(8 pp)   2017.6

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    DOI: 10.1063/1.4990077

  152. Influence of expanding and contracting magnetic field configurations on detached plasma formation in a linear plasma device Reviewed

    Y.Hayashi, N.Ohno, S.Kajita, H.Tanaka

    Physics of Plasmas   Vol. 24   page: 062509(8 pp)   2017.6

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    DOI: 10.1063/1.4986100

  153. Recent progress of the JT-60SA project Reviewed International coauthorship International journal

    Shirai H., Barabaschi P., Kamada Y., Maksoud W.A., Aiba N., Akiyama T., Alonso J., Angioni C., Arai T., Arakawa H., Ardellier F., Artaud J.F., Asakura N., Ashikawa N., Barbato E., Barrera G., Baruzzo M., Baulaigue O., Beaufils S., Bécoulet M., Benkadda S., Benoit F., Bettini P., Beurskens M., Bierwage A., Boboc A., Boccaccini L., Bolzonella T., Bonne F., Borba D., Botija J., Bourdelle C., Brolatti G., Bruschi A., Bucalossi J., Cabrera-Pérez S., Canton A., Cardella A., Carvalho I., Challis C., Chapman I., Chiba S., Ciazynski D., Cismondi F., Clement-Lorenzo S., Coccoluto G., Cocilovo V., Coda S., Coelho R., Coletti A., Collin B., Conway G., Corato V., Costa P., Crisanti F., Cristofani C., Cruz N., Cucchiaro A., Dairaku M., Davis S., Day C., de Baar M., de la Luna E., De Tommasi G., De Vellis A., De Vries P., Decker J., Decool P., Delrez C., Di Pace L., Di Pietro E., Disset G., Donati A., Douai D., Dougnac H., Duchateau J.L., Duglue D., Dumas N., Dunai D., Ejiri A., Endo Y., Enoeda M., Falchetto G., Farina D., Farthing J., Fejoz P., Fernandez P., Ferro A., Fiamozzi-Zignani C., Fietz W., Figini L., Frello G., Frosi P., Fujita T., Fukuda T., Fukumoto M., Fukuyama A., Furukawa M., Furukawa M.

    Nuclear Fusion   Vol. 57 ( 10 )   2017.6

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    The JT-60SA project has been implemented for the purpose of an early realization of fusion energy. With a powerful and versatile NBI and ECRF system, a flexible plasma-shaping capability, and various kinds of in-vessel coils to suppress MHD instabilities, JT-60SA plays an essential role in addressing the key physics and engineering issues of ITER and DEMO. It aims to achieve the long sustainment of high integrated performance plasmas under the high β N condition required in DEMO. The fabrication and installation of components and systems of JT-60SA procured by the EU and Japan are steadily progressing. The installation of toroidal field (TF) coils around the vacuum vessel started in December 2016. The commissioning of the cryogenic system and power supply system has been implemented in the Naka site, and JT-60SA will start operation in 2019. The JT-60SA research plan covers a wide area of issues in ITER and DEMO relevant operation regimes, and has been regularly updated on the basis of intensive discussion among European and Japanese researchers.

    DOI: 10.1088/1741-4326/aa5d01

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  154. Measurement of Poloidal Flow Profiles Using a Mach Probe Array in HYBTOK-II Tokamak with RMP Fields Reviewed

    Okamoto Masaaki, Sakakibara Satoru, Yoshimoto Naoya, Ohno Takuya, Ohno Noriyasu

    PLASMA AND FUSION RESEARCH   Vol. 12   page: 1202027   2017.6

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    DOI: 10.1585/pfr.12.1202027

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  155. Observations of sustained phase shifted magnetic islands from externally imposed m/n=1/1 RMP in LHD Reviewed International coauthorship

    Narushima Y., Sakakibara S., Suzuki Y., Watanabe K. Y., Ohdachi S., Takemura Y., Yoshinuma M., Ida K., Castejon F., Lopez-Bruna D., Hegna C. C., Kobayashi M., Tanaka H., Akiyama T., Ohno N.

    NUCLEAR FUSION   Vol. 57 ( 7 ) page: 076024   2017.5

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    DOI: 10.1088/1741-4326/aa6dce

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  156. Molecular activated recombination in divertor simulation plasma on GAMMA 10/PDX Reviewed

    M.Sakamoto, A.Terakado, K.Nojiri, N.Ezumi, Y.Nakashima, K.Sawada, Ichimura, M.Fukumoto, N.Ohno, S.Masuzaki, S.Togo, Kohagura, M.Yoshikawa

    Nuclear Materials and Energy   Vol. 12   page: 1004-1009   2017.5

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  157. Increase in the energy absorption of pulsed plasma by the formation of tungsten nanostructure Reviewed

    D. Sato, N. Ohno, F. Domon, S. Kajita, Y. Kikuchi, I. Sakuma

    Nuclear Fusion   Vol. 57 ( 6 ) page: 066028(8 pp)   2017.4

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    © 2017 IAEA, Vienna. The synergistic effects of steady-state and pulsed plasma irradiation to material have been investigated in the device NAGDIS-PG (Nagoya DIvertor Simulator with Plasma Gun). The duration of the pulsed plasma was ∼0.25 ms. To investigate the pulsed plasma heat load on the materials, we developed a temperature measurement system using radiation from the sample in a high time resolution. The heat deposited in response to the transient plasma on a tungsten surface was revealed by using this system. When the nanostructures were formed by helium plasma irradiation, the temperature increase on the bulk sample was enhanced. The result suggested that the amount of absorbed energy on the surface was increased by the formation of nanostructures. The possible mechanisms causing the phenomena are discussed with the calculation of a sample temperature in response to the transient heat load.

    DOI: 10.1088/1741-4326/aa67ad

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  158. Tailoring of fuzzy nanostructures on porous tungsten skeleton by helium plasma irradiation Reviewed

    Shin Kajita, Hirohiko Tanaka, Noriyasu Ohno

    Japanese Journal of Applied Physics   Vol. 56 ( 3 ) page: 030303(4 pp)   2017.3

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    Porous tungsten skeleton, which was fabricated by sintering of tungsten powder, was exposed to helium plasmas, and the fuzzy nanostructures were tailored on the surface. The hemispherical optical reflectance of the samples was measured at the wavelength of 633 nm. It was shown that the optical reflectance of the porous tungsten skeleton was lower than that of flat tungsten samples. The minimum reflectance was &gt
    0.4%, suggesting that the darkest metallic material was fabricated. The advantage of the porous tungsten skeleton with nanostructures for optical application is discussed.

    DOI: 10.7567/JJAP.56.030303

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  159. Plasma detachment in linear devices Reviewed

    Ohno N.

    PLASMA PHYSICS AND CONTROLLED FUSION   Vol. 59 ( 3 ) page: 034007(9 pp)   2017.3

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    DOI: 10.1088/1361-6587/aa5394

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  160. Localized density fluctuation in the downstream of detached plasma Reviewed

    Kohei Takeyama, Noriyasu Ohno, Masayuki Yoshikawa, Hirohiko Tanaka, Shin Kajita

    Plasma and Fusion Research   Vol. 12 ( 1 ) page: 1202007   2017.2

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    The density fluctuation was measured with a 70-GHz microwave interferometry system in the linear divertor plasma simulator NAGDIS-II while changing from the attached to the detached states. In the detached plasma, a large amplitude fluctuation of ≤ 10 kHz appeared in the peripheral region. The fluctuation has a maximum value at the neutral gas pressure of 30 - 34 mTorr. Further, the measurement of the light emission associated with the plasma recombination indicates that the large amplitude fluctuation is located at just downstream of the recombination front, in which the recombination process is the most enhanced.

    DOI: 10.1585/pfr.12.1202007

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  161. Transverse motion of a plasma column in a sheet plasma Reviewed

    Takuya Onda, Shin Kajita, Takaaki Iijima, Akira Tonegawa, Noriyasu Ohno, Hirohiko Tanaka

    CONTRIBUTIONS TO PLASMA PHYSICS   Vol. 57 ( 2 ) page: 87 - 93   2017.2

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    In this paper, we show the dynamic behaviors of a sheet plasma and the corresponding release of blob-like plasmas to the periphery of the sheet based on observation with a high-speed camera. We found that the plasma column moves in a transverse direction reciprocally when injecting a small amount of Ar gas to the He plasma from the plasma source region. The motion continued periodically at a frequency of similar to 5 kHz. The frequency of the plasma column motion decreased with increasing Ar gas flow rate and increasing magnetic field. The mechanism of the transverse motion is discussed. Furthermore, in response to the reciprocating motion, release of a blob-like plasma was observed. The differences in the behavior of the released plasma compared with the other linear devices are discussed.

    DOI: 10.1002/ctpp.201500142

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  162. In Situ TEM Observation of Helium Bubbles Collapsing on Nanostructured Tungsten during Annealing Reviewed

    M. Yajima, N. Yoshida, S. Kajita, and N. Ohno

    Plasma and Fusion Research   Vol. 11   page: 1206125   2016.12

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    DOI: 10.1585/pfr.11.1206125

  163. Measurement of heat diffusion across fuzzy tungsten layer Reviewed

    S.Kajita, T.Yagi, K.Kobayashi, M.Tokitani, N.Ohno

    Results in Physics   Vol. 6   page: 877-878   2016.11

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  164. Enhancement of photocatalytic activity of TiO2 by plasma irradiation Reviewed

    S.Kajita, T.Yoshida, N.Ohno, T.Ishida, D.Kitaoka

    Japanese Journal of Applied Physics   Vol. 55   page: 106202(5 pp)   2016.9

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  165. Plasma detachment study of high density helium plasmas in the Pilot-PSI device Reviewed

    Y.Hayashi, K.Jesko, H.J.van der Meiden, J.W.M.Vernimmen, T.W.Morgan, N.Ohno, S.Kajita, M.Yoshikawa, S.Masuzaki

    Nuclear Fusion   Vol. 56   page: 126006(13 pp)   2016.9

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  166. Fuzzy nanostructure growth on Ta/Fe by He plasma irradiation Reviewed

    S.Kajita, T.Ishida, N.Ohno, D.Hwangbo, T.Yoshida

    Scientific Reports   Vol. 6   page: 30380   2016.7

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    DOI: 10.1038/srep30380

  167. Statistical Analysis of Particle Flux Flowing into the End-Target in between Atached and Detached Sttes in the Linear Divertor Plasma Simulator NAGDIS-II Reviewed

    H.Tanaka, N.Ohno, T.Onda, K.Takeyama, S.Kajita, T.Kuwabara, Y.Tsuji

    Contrib. Plasma Phys.   Vol. 56 ( 6-8 ) page: 723-728   2016.6

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  168. Measurement of thermophysical property of plasma forming tungsten nanofiber layer Reviewed

    S.Kajita, T.Yagi, K.Kobayashi, M.Tokitani, N.Ohno

    Japanese Journal of Applied Physics   Vol. 55   page: 056203(5 pp)   2016.4

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    DOI: 10.7567/JJAP.55.056203

  169. Dynamics of three-dimensional radiative structures during RMP assisted detached plasmas on the large helical device and its comparison with EMC3-EIRENE modeling Reviewed International coauthorship

    Shwetang N. Pandya, Byron J. Peterson, Masahiro Kobayashi, Katsumi Ida, Kiyofumi Mukai, Ryuichi Sano, Junichi Miyazawa, Hirohiko Tanaka, Suguru Masuzaki, Tsuyoshi Akiyama, Gen Motojima, Noriyasu Ohno

    NUCLEAR FUSION   Vol. 56 ( 4 ) page: 046002   2016.3

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    The resonant magnetic perturbation (RMP) island introduced in the stochastic edge of the large helical device (LHD) plasma plays an important role in the stabilization of the plasma detachment (Kobayashi et al 2013 Nucl. Fusion 53 093032). The plasma enters in the sustained detachment phase in the presence of an RMP once the line averaged density exceeds a critical value with a given input power. During detachment the enhanced radiation from the stochastic edge of the LHD undergoes several spatiotemporal changes which are studied quantitatively by an infrared imaging video bolometer (IRVB) diagnostic. The experimental results are compared qualitatively and quantitatively with the radiation predicted by the 3D transport simulation with fluid model, EMC3-EIRENE. A fair amount of qualitative agreement, before and after the detachment, is reported. The issue of overestimated radiation from the model is addressed by changing the free parameters in the EMC3-EIRENE code till the total radiation and the radiation profiles match closely, within a factor of two with the experimental observations. A better quantitative match between the model and the experiment is achieved at higher cross-field impurity diffusion coefficient and lower sputtering coefficient after the detachment. In this article a comparison, the first of its kind, is established between the quantified radiation from the experiments and the synthetic image obtained from the simulation code. This exercise is aimed towards validating the model assumptions against the experimentally measured radiation.

    DOI: 10.1088/0029-5515/56/4/046002

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  170. Strong Reduction of Ion Flux to a Target Plate in a Magnetically Contracting Detached Plasma Reviewed

    Y.Hayashi, H.Nishikata, N.Ohno, S.Kajita

    Plasma and Fusion Research: Rapid Communications   Vol. 11   page: 1202005(2 pp)   2016.2

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    DOI: 10.1585/pfr.11.1202005

  171. Plasma flow in peripheral region of detached plasma in linear plasma device Reviewed

    Y.Hayashi, N.Ohno, S.Kajita, H.Tanaka

    Physics of Plasmas   Vol. 23   page: 012511(7 pp)   2016.1

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    DOI: 10.1063/1.4940310

  172. Arc tracks on nanostructured surfaces after microbreakdowns Reviewed

    D.Sinelnikov, D.Bulgadaryan, D.Hwangbo, S.Kajita, D.Kolodko, V.Kurnaev, N.Ohno

    Journal of Physics:Conference Series   Vol. 748   page: 012012(6 pp)   2016

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  173. Detailed Analysis of Plasma Resistivity in Detached Recombining Plasmas Reviewed

    H.Nishikata, Y.Hayashi, N.Ohno, S.Kajita, T.Kuwabara

    Contrib. Plasma Phys.   Vol. 56 ( 6-8 ) page: 717-722   2016

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  174. Modeling of Linear Divertor Plasma Simulator Experiments with Three-dimensional Target Structure by Using EMC3-EIRENE Code Reviewed

    T.Kubawara, H.Tanaka, G.Kawamura, N.Ohno, H.Nishikata, M.Kobayashi, Y.Feng

    Contrib. Plasma Phys.   Vol. 56 ( 6-8 ) page: 598-603   2016

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  175. Effects of Modified Surfaces Produced at Plasma-Facing Surface on Hydrogen Isotopes and Helium Release Behavior in the LHD Reviewed

    Y.Nobuta, S.Masuzaki, M.Tokitani, D.Nagata, N.Ashikawa, N.Yoshida, Y.Oya, M.Yajima, G.Motojima, H.Kasahara, M.Miyamoto, N.Ohno

    IAEA proccedings     page: MPT/P5-19(9 pp)   2016

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  176. Photon Trapping Effects in DEMO Divertor Plasma Reviewed

    K. Hoshino, K. Sawada, R. Idei, S. Tokunaga, N. Asakura, K. Shimizu, and N. Ohno

    Contrib. Plasma Phys.   Vol. 56   page: 657-662   2016

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  177. Investigation of arcing on fiber-formed nanostructured tungsten by pulsed plasma during steady state plasma irradiation Reviewed

    M. Yajima, N. Ohno, S. Kajita, G. De Temmerman, K. Bystrov, S. Bardin

    Fusion Engineering and Design   Vol. 112   page: 156-161   2016

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  178. Vacuum Breakdown from Nanostructured Fuzzy Surfaces Reviewed International coauthorship International journal

    Sinelnikov D., Bulgadaryan D., Hwangbo D., Kajita S., Kolodko D., Kurnaev V., Ohno N.

    PROCEEDINGS OF THE 27TH INTERNATIONAL SYMPOSIUM ON DISCHARGES AND ELECTRICAL INSULATION IN VACUUM (ISDEIV), VOL 1     page: 68 - 71   2016

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  179. Morphology and optical property changes of nanostructured tungsten in LHD Reviewed

    S.Kajita, T.Akiyama, N.Yoshida, M.Tokitani, M.Yajima, N.Ohno

    Plasma and Fusion Research   Vol. 10   page: 1402083(9 pp)   2015.12

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    DOI: 10.1585/pfr.10.1402083

  180. Sulfur K-edge XANES for methylene blue in photocatalytic reaction over WO<inf>3</inf> nanomaterials Reviewed International journal

    K. Komori, T. Yoshida, T. Nomoto, M. Yamamoto, C. Tsukada, S. Yagi, M. Yajima, S. Kajita, N. Ohno

    Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms   Vol. 365   page: 35 - 38   2015.12

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    DOI: 10.1016/j.nimb.2015.07.035

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  181. Increase in the work function of W/WO3 by helium plasma irradiation Reviewed

    S.Kajita, A.Ohta, T.Ishida, K.Makihara, T.Yoshida, N.Ohno

    Japanese Journal of Applied Physics   Vol. 54   page: 126201(6 pp)   2015.11

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  182. 3D effects of edge magnetic field configuration on divertor/scrape-off layer transport and optimization possibilities for a future reactor Reviewed International coauthorship International journal

    M. Kobayashi, Y. Xu, K. Ida, Y. Corre, Y. Feng, O. Schmitz, H. Frerichs, F. L. Tabares, T. E. Evans, J. W. Coenen, Y. Liang, A. Bader, K. Itoh, H. Yamada, Ph Ghendrih, G. Ciraolo, D. Tafalla, A. Lopez-Fraguas, H. Y. Guo, Z. Y. Cui, D. Reiter, N. Asakura, U. Wenzel, S. Morita, N. Ohno, B. J. Peterson, S. Masuzaki

    Nuclear Fusion   Vol. 55 ( 10 ) page: 104021   2015.9

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    © 2015 IAEA, Vienna. This paper assesses the three-dimensional (3D) effects of the edge magnetic field structure on divertor/scrape-off layer transport, based on an inter-machine comparison of experimental data and on the recent progress of 3D edge transport simulation. The 3D effects are elucidated as a consequence of competition between transports parallel () and perpendicular () to the magnetic field, in open field lines cut by divertor plates, or in magnetic islands. The competition has strong impacts on divertor functions, such as determination of the divertor density regime, impurity screening and detachment control. The effects of magnetic perturbation on the edge electric field and turbulent transport are also discussed. Parameterization to measure the 3D effects on the edge transport is attempted for the individual divertor functions. Based on the suggested key parameters, an operation domain of the 3D divertor configuration is discussed for future devices.

    DOI: 10.1088/0029-5515/55/10/104021

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  183. Initiation of arcing on tungsten surface exposed to steady state He Plasmas Reviewed

    S.Kajita, Y.Noiri, N.Ohno

    Physica Scripta   Vol. 90 ( 9 ) page: 095604(7 pp)   2015.8

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    DOI: 10.1088/0031-8949/90/9/095604

  184. Development of Impurity Seeding and Radiation Enhancement in the Helical Divertor of LHD Reviewed

    K.Mukai, S.Masuzaki, B.Peterson, T.Akiyama, M.Kobayashi, H.Tanaka, S.Pandya, R.Sano, G.Motojima, N.Ohno, T.Morisaki, C.Suzuki, I.Murakami, J.Miyazawa, N.Tamura, S.Yoshimura, I.Yamada, R.Yasuhara, H.Funaba, K.Tanaka

    Nuclear Fusion   Vol. 55   page: 83016(9 pp)   2015.7

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    DOI: 10.1088/0029-5515/55/8/083016

  185. Overview of transport and MHD stability study:focusing on the impact of magnetic field topology in the Large Helical Device Reviewed

    K. Ida, K. Nagaoka, S. Inagaki, H. Kasahara, T. Evans, M. Yoshinuma, K. Kamiya, S. Ohdach, M. Osakabe, M. Kobayashi, S. Sudo1,, K. Itoh, T. Akiyama, M. Emoto, A. Dinklage, X. Du, K. Fujii, M. Goto, T. Goto, M. Hasuo, C. Hidalgo, K. Ichiguchi, A. Ishizawa, M. Jakubowski, G. Kawamura, D. Kato, S. Morita, K. Mukai, I. Murakami, S. Murakami, Y. Narushima, M. Nunami, N. Ohno, N. Pablant, S. Sakakibara, T. Seki, T. Shimozuma, M. Shoji, K. Tanaka, T. Tokuzawa, Y. Todo, H. Wang, M. Yokoyama, H. Yamada, Y. Takeiri, T. Mutoh, S. Imagawa, T. Mito, Y. Nagayama, K.Y. Watanabe, N. Ashikawa, H. Chikaraishi, A. Ejiri, M. Furukawa, T. Fujita, S. Hamaguchi, H. Igami1, M. Isobe, S. Masuzaki, T. Morisaki, G. Motojima, K. Nagasaki, H. Nakano, Y. Oya, C. Suzuki, Y. Suzuki, R. Sakamoto, M. Sakamoto, A. Sanpei, H. Takahashi, H. Tsuchiya, M. Tokitani, Y. Ueda, Y. Yoshimura1, S. Yamamoto, K. Nishimura, H. Sugama, T. Yamamoto, H. Idei, A. Isayama, S. Kitajima, S. Masamune, K. Shinohara, P.S. Bawankar, E. Bernard, M. von Berke, H. Funaba, X.L. Huang, T. Ii, T. Ido, K. Ikeda, S. Kamio, R. Kumazawa, T. Kobayashi, C. Moon, S. Muto, J. Miyazawa, T. Ming, Y. Nakamura, S. Nishimura, K. Ogawa, T. Ozaki, T. Oishi, M. Ohno, S. Pandya, A. Shimizu, R. Seki, R. Sano, K. Saito, H. Sakaue, Y. Takemura, K. Tsumori, N. Tamura, H. Tanaka, K. Toi, B. Wieland, I. Yamada, R. Yasuhara, H. Zhang2, O. Kaneko, A. Komori and Collaborators

    Nuclear Fusion   Vol. 55 ( 10 ) page: 104018   2015.7

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    DOI: 10.1088/0029-5515/55/10/104018

  186. Sulfur E-edge XANES for methylene blue in photocatalytic reaction over WO3 nanomaterials Reviewed

    K.Komori, T.Yoshida, T.Nomoto, M.Yamamoto, C.Tsukada, S.Yagi, M.Yajima, S.Kajita, N.Ohno

    Nuclear Instruments and Methods in Physics Research B   Vol. 365   page: 35-38   2015.7

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  187. Molecular dynamics and Monte Carlo hybrid simulation for fuzzy tungsten nanostructure formation Reviewed

    A.M.Ito, A.Takayama, Y.Oda, T.Tamura, R.Kobayashi, T.Hattori, S.Ogata, N.Ohno, S.Kajita, M.Yajima, Y.Noiri, Y.Yoshimoto, S.Saito, S.Takamura, T.Murashima, M.Miyamoto, H.Nakamura

    Nuclear Fusion   Vol. 55 ( 7 ) page: 073013   2015.6

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    DOI: 10.1088/0029-5515/55/7/073013

  188. Growth of multifractal tungsten nanostructure by He bubble induced directional swelling Reviewed

    S.Kajita, N.Yoshida, N.Ohno, Y.Tsuji

    New Journal of Physics   Vol. 17   page: 043038(14 pp)   2015.4

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  189. Influence of Deuterium Retention on Secondary Electron Emission from Graphite under Deuterium Plasma Exposure Reviewed

    T.Kaneko, N.Ohno, Y.Nakamura, M.Yamagiwa, N.Matsunami, S.Kajita, M.Takagi

    Plasma and Fusion Research: Regular Articles   Vol. 10   page: 1402009(5 pp)   2015.3

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  190. Nanostructure growth by helium plasma irradiation to tungsten in sputtering regime Reviewed

    Y.Noiri, S.Kajita, N.Ohno

    Journal of Nuclear Materials   Vol. 463 ( C ) page: 285 - 288   2015.1

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    DOI: 10.1016/j/jnucmat.2015.01.036

  191. Flow damping due to stochastization of the magnetic field Reviewed

    K.Ida, M.Yoshinuma, H.Tsuchiya, T.Kobayashi, C.Suzuki, M.Yokoyama, A.Shimizu, K.Nagaoka, S.Inagaki, K.Itoh & the LHD Experiment Group (36th author)

    Nature Communications     2015.1

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    DOI: 10.1038/ncomms6816

  192. Hybrid simulation research on formation mechanism of tungsten nanostructure induced by helium plasma irradiation Reviewed

    A.M. Ito, A.Takayama, Y.Oda, T.Tamura, R.Kobayashi, T.Hattori, S.Ogata, N.Ohno, S.Kajita, M.Yajima, Y.Noiri, Y.Yoshimoto, S.Saito, S.Takamura, T.Murashima, M.Miyamoto, H.Nakamura

    Journal of Nuclear Materials   Vol. 463   page: 109 - 115   2015.1

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    DOI: 10.1016/j.jnucmat.2015.01.018

  193. Multi-pin Langmuir probe measurement for identification of blob propagation characteristics in the Large Helical Device Reviewed

    H.Tanaka, S.Masuzaki, N.Ohno, T.Morisaki, Y.Tsuji, LHD Experiment Group

    Journal of Nuclear Materials   Vol. 463   page: 761-764   2015

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  194. Evolution of radiation profiles during detached plasmas and radiative collapse in LHD Reviewed

    S.N.Pandya, B.J.Peterson, M.Kobayashi, K.Mukai, R.Sano, H.Tanaka, S.Masuzaki, J.Miyazawa, T.Akiyama.G.Motojima N.Ohno

    Journal of Nuclear Materials   Vol. 463   page: 551-554   2015

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  195. Nanostructure growth by helium plasma irrdaition to tungsten in sputtering regime Reviewed

    Y.Noiri, S.Kajita, N.Ohno

    Journal of Nuclear Materials   Vol. 463   page: 285-288   2015

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  196. Progress of divertor simulation research toward the realization of detached palsam using a large tandem mirror device Reviewed

    Y.Nakashima, H.Takeda, K.Ichimura, K.Hosoi, K.Oki, M.Sakamoto, M.Hirata, M.Ichimura, R.Ikezoe, T.Imai, M.Iwamoto, Y.Hosoda, I.Katanuma, T.Kariya, S.Kigure, J.Kohagura, R.Minami, T.Numakura, S.Takahashi, M.Yoshikawa, N.Asakura, M.Fukumoto, A.Hatayama, Y.Hirooka, S.Kado, H.Kubo, S.Masuzaki, H.Matsuura, S.Nagata, N.Nishino, N.Ohno, A.Sagara, T.Shikama, M.Shoji, A.Tonegawa, Y.Ueda

    Journal of Nuclear Materials   Vol. 463   page: 537-540   2015

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  197. Impact of 3D magnetic field structure on boundary and divertor plasmas in stellarator /heliotron devices Reviewed

    M.Kobayasahi, Y.Feng, Y.Xu, F.L.Tabares, K.Ida, O.Schmitz, T.E.Evans, H.Frerichs, Y.Liang, A.bader, K.Itoh, H.Yamada, Ph.Ghendrih, G.Ciraolo, D.Tafalla, A.Lopez-Fraguas, H.Y.Guo, Z.Y.Cui, D.Reiter, N.Asakura, U.Wenzel, S.Morita, N.Ohno, B.J.Peterson, S.Masuzaki

    Journal of Nuclear Materials   Vol. 463   page: 2-10   2015

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  198. Global helium particle balance in LHD Reviewed

    G.Motojima, S.Masuzaki, M.Tokitani, H.Kasahara, Y.Yoshimura, M.Kobayashi, R.Sakamoto, T.Morisaki, J.Miyazawa, T.Akiyama, N.Ohno, T.Mutoh, H.Yamada, LHD Experiment Group

    Journal of Nuclear Materials   Vol. 463   page: 1080-1083   2015

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  199. Radiated power distributions in impurity-seeded plasmas in LHD Reviewed

    T.Morisaki, K.Oyama, N.Tamura, S.Masuzaki, T.Akiyama, G.Motojima, J.Miyazawa, B.J.Peterson, N.Ohno, H.Yamada, LHD Experiment Group

    Journal of Nuclear Materials   Vol. 463   page: 640-643   2015

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  200. Simulation Study of Power Load with Impurity Seeding in Advanced Divertor "Short Super-X Divertor" for a Tokamak Reactor Reviewed

    N.Asakura, K.Hoshino, K.Shimizu, K.Shinya, H.Utoh, S.Tokunaga, K.Tobita, N.Ohno

    Journal of Nuclear Materials   Vol. 463   page: 1238-1242   2015

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    DOI: 10.1016/j.jnucmat.2015.01.068

  201. Influence of external resonant magnetic perturbation field on edge plasma of small tokamak HYBTOK-II Reviewed

    Y.Hayashi, Y.Suzuki, N.Ohno, M.Okamoto, Y.Kikuchi, S.Sakakibara, K.Watanabe, Y.Takemura

    Journal of Nuclear Materials   Vol. 463   page: 463-466   2015

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    DOI: 10.1016/j.jnucmat.2014.12.018

  202. In-situ measurement of deuterium retention in W under plasma exposure Reviewed

    T. Watanabe, T. Kaneko, N. Matsunami, N. Ohno, S. Kajita, T. Kuwabara

    Journal of Nuclear Materials   Vol. 463   page: 1049-1052   2015

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    DOI: 10.1016/j.jnucmat.2014.12.011

  203. CORRELATION ANALYSIS OF 3-4 KILOHERTZ CORE AND EDGE DENSITY FLUCTUATIONS IN THE GAMMA 10 TANDEM MIRROR DEVICE Reviewed

    H. Tanaka, M. Sakamoto, K. Furutachi, K. Oki, M. Mizuguchi, Y. Nagatsuka, M. Yoshikawa, R. Nohara, M. Yoshikawa, J. Kohagura, N. Ohno, and Y. Tsuji

    Fusion Sci. Tech.   Vol. 68   page: 125-129   2015

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  204. Influence of Deuterium Retention on Secondary Electron Emission from Graphite under Deuterium Plasma Exposure Reviewed

    T.Kaneko, N.Ohno, Y.Nakamura, M.Yamagiwa, N.Matsunami, S.Kajita, M.Takagi

    Plasma and Fusion Research   Vol. 10   page: 1402009(5 pp)   2015

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  205. Arc spot grouping: An entanglement of arc spot cells Reviewed

    S.Kajita, D.Hwangbo, N.Ohno, M.M.Tsventoukh, S.A.Barengolts

    Journal of Applied Physics   Vol. 116   page: 233302   2014.12

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    DOI: 10.1063/1.4904917

  206. Current Activities in the Interactive Joint Research at Tohoku University - Advanced Evaluation of Radiation Effects on Fusion Materials - Reviewed

    H.Kurishita, M.Hatakeyama, M.Narui, S.Matsuo, T.Shikama, K.Tada, N.Ohno, T.Takeuchi, Y.Hatano, M.Nishiura, Y.Nakashima, H.Watanabe, K.Tokunaga, T.Hino, Y.Ueda, T.Muroga, A.Sagara, O.Kaneko

    Plasma and Fusion Research   Vol. 9   page: 3405136(4 pp)   2014.9

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    DOI: 10.1585/pfr.9.3405136

  207. Compact and high-particle-flux thermal-lithium-beam probe system for measurement of two-dimensional electron density profile Reviewed

    Y.Shibata, T.Manabe, S.Kajita, N.Ohno, M.Takagi, H.Tsuchiya, T.Morisaki

    Rev. Sci. Instrum.   Vol. 85   page: 93510(6 pp)   2014.9

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    DOI: 10.1063/1.4895718

  208. Application of Nanostructured Tungsten Fabricated by Helium Plasma Irradiation for Photoinduced Decolorization of Methylene Blue Reviewed

    K.Komori, T.Yoshida, S.Yagi, H.Yoshida, M.Yajima, S.Kajita, N.Ohno

    e-J.Surf.Sci.Nanotech.(e-Journal of Surface Science and Nanotechnology)   Vol. 12   page: 343-348   2014.7

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    DOI: 10.1380/ejssnt.2014.343

  209. Fractality of self-grown nanostructured tungsten by He plasma irradiation Reviewed

    S.Kajita, Y.Tsuji, N.Ohno

    Physics Letters A   Vol. 378   page: 2533-2538   2014.7

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  210. In situ observation of structural change of nanostructured tungsten during annealing Reviewed

    M.Yajima, N.Yoshida, S.Kajita, M.Tokitani, T.Baba, N.Ohno

    Journal of Nuclear Materials   Vol. 449 ( 1-3 ) page: 9-14   2014.6

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  211. Influence of plasma-neutral collisions on probe measurements in atmospheric pressure plasmas Reviewed International journal

    Contributions to Plasma Physics   Vol. 54 ( 3 ) page: 304 - 307   2014.4

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    DOI: 10.1002/ctpp.201410074

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  212. In situ measurement of deuterium retention in graphite under successive exposure to deuterium and hydrogen plasmas Reviewed

    N.Ohno, Y.Nakamura, M.Yamagiwa, T.Kaneko, N.Matsunami, S.Kajita, M.Takagi

    Phys. Scr.   Vol. T159   page: 014053(4 pp)   2014.4

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  213. A plasma source driven predator-prey like mechanism as a potential cause of spiraling intermittencies in linear plasma devices Reviewed

    D.Reiser, N.Ohno, H.Tanaka, L.Vela

    Physics of Plasmas   Vol. 21   page: 032302(10 pp)   2014.3

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  214. Surface modification of titanium using He plasma Reviewed

    S.Kajita, D.Kitaoka, N.Ohno, R.Yoshihara, N.Yoshida, T.Yoshida

    Applied Surface Science   Vol. 303   page: 438-445   2014.3

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  215. Thermal response of nanostructured tungsten Reviewed

    S.Kajita, G.De Temmerman, T.Morgan, S.van Eden, T. de Kruif, N.Ohno

    Nuclear Fusion   Vol. 54   page: 033005(10 pp)   2014.2

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  216. Helium plasma irradiation on single crystal tungsten and undersized atom doped tungsten alloys Reviewed International journal

    Shin Kajita, Naoaki Yoshida, Noriyasu Ohno, Yuki Hirahata, Reiko Yoshihara

    PHYSICA SCRIPTA   Vol. 89 ( 2 )   2014.2

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    Helium plasma irradiation leads to the formation of nanostructures on the surface when certain conditions are satisfied. The surface morphology changes due to helium plasma irradiation were investigated on single crystal tungsten samples with different crystal orientations. Differences in surface morphology changes were observed in (100) and (110) single crystal tungsten samples when the helium fluence was less than 10(25) m(-2). However, the differences disappeared as growth proceeded. Tungsten alloys were prepared in order to investigate the influence of the additional undersized atomic species on nanostructure growth. The influence of the doping of undersized atoms, i.e. 2 at% Fe doped and 2 at% Cr doped atoms, is presented.

    DOI: 10.1088/0031-8949/89/02/025602

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  217. Optical design for divertor Thomson scattering system for JT-60SA Reviewed

    S.Kajita, A.Enokuchi, T.Hatae, K.Itami, T.Hamano, S.Kado, N.Ohno, N.Takeyama

    Fusion Engineering and Design   Vol. 89 ( 1 ) page: 69-76   2014.1

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  218. Helium plasma irradiation on single crystal tungsten and undersized atom doped tunsten alloys Reviewed

    S.Kajita, N.Yoshida, N.Ohno, Y.Hirahata, R.Yoshihara

    Phys. Scr.   Vol. 89   page: 025602(7 pp)   2014.1

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  219. Modified Power Transmission Factor of Tungsten in Plasmas with Hot Electron Component Reviewed

    S.Takamura, S.Ono, N.Ohno

    Contrib. Plasma Phys.   Vol. 54 ( 4-6 ) page: 474-478   2014

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  220. Transition in velocity and grouping of arc spot on different nanostructured tungsten electrodes Reviewed

    Dogyun Hwangbo, Shin Kajita, Sergey A. Barengolts, Mikhail M. Tsventoukh, Noriyasu Ohno

    RESULTS IN PHYSICS   Vol. 4   page: 33 - 39   2014

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    Behavior of arc spots was investigated in detail using a nanostructured tungsten specimen with different thicknesses of the nanostructured layer. From the observation using a fast framing camera, it was found that the velocity of the arc spots significantly altered as passing the boundary of the two layers. The changes in spot velocity and spot width were discussed theoretically using the ecton model. The fractal dimension of the arc trail evaluated by using a box-counting method was significantly changed. Also, the width of arc trail was increased with the nanostructured layer thickness. From the SEM analysis of the specimen, the amount of tungsten eroded by arcing for two different thickness cases was estimated, and the erosion rates were discussed. (C) 2014 The Authors. Published by Elsevier B.V.

    DOI: 10.1016/j.rinp.2014.03.001

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  221. Spectroscopic Study and Motion Analysis of Arc Spot Initiated on Nanostructured Tungsten Reviewed

    D.Hwangbo, S.Kajita, M.Osaka, N.Ohno

    Jpn. J. Appl. Phys.   Vol. 52   page: 11NC02(6 pp)   2013.11

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    DOI: 10.7567/JJAP.52.11NC02

  222. Low-energy helium irradiation on in-vessel mirror materials Reviewed

    S.Kajita, M.Tokitani, T.Saeki, N.Ohno, N.Yoshida

    Journal of Nuclear Materials   Vol. 442 ( 1-3, Supplement 1 ) page: S515-S519   2013.11

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  223. Properties of deposited layer formed by interaction with Be seede D-He mixture plasma and tungsten Reviewed

    K.Tokunaga, M.J.Baldwin, D.Nishijima, R.P.Doerner, S.Nagata, B.Tsuchiya, H.Kurishita, T.Fujiwara, K.Araki, Y.Miyamoto, N.Ohno, Y.Ueda

    Journal of Nuclear Materials   Vol. 442 ( 1-3 ) page: S313-S319   2013.11

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  224. Helium effects on tungsten surface morphology and deuterium retention Reviewed

    Y.Ueda, H.Y.Peng, H.T.Lee, N.Ohno, S.Kajita, N.Yoshida, R.Doerner, G.De Temmerman, V.Alimov, G.Wright

    Journal of Nuclear Materials   Vol. 442 ( 1-3 ) page: S267-S272   2013.11

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  225. Characterization of Gun Plasma Penetrated into a Steady State Plasma Device Reviewed

    S.Kajita, T.Akiyama, T.Nihashi, M.Osaka, N. Ohno, Y.Kikuchi, I.Sakuma, M.Nagata

    IEEE TRANSACTIONS ON PLASMA SCIENCE   Vol. 41 ( 11 ) page: 3122-3128   2013.11

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  226. Field emission property of nanostructured tungsten formed by helium plasma irradiation Reviewed

    Shin Kajita, Noriyasu Ohno, Yuki Hirahata, Mineo Hiramatsu

    FUSION ENGINEERING AND DESIGN   Vol. 88 ( 11 ) page: 2842 - 2847   2013.11

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    Field emission property of nanostructured tungsten formed by the exposure to a helium plasma is measured to investigate the initiation process of arcing in nuclear fusion devices. Field emission current from the nanostructured tungsten and tungsten with helium bubbles was significantly higher than that from the polished tungsten specimen. However, field enhancement factor was on the order of 100, which was almost comparable to that of bulk tungsten; the increase in the field emission current is attributed to primarily an increase in the effective emission surface area. From the calculation of thermo-field emission current from a heated tungsten, it is thought that a significant current emission can be still initiated even when the field enhancement factor is not so high when tungsten is exposed to high density plasmas such as the one accompanied with ELMs. (C) 2013 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.fusengdes.2013.05.014

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  227. Progress of the JT-60SA project Reviewed International coauthorship International journal

    Kamada Y., Barabaschi P., Ishida S., Abdel Maksoud W., Aiba N., Akino N., Akiyama T., Alonso J., Angioni C., Arai T., Arakawa H., Ardellier F., Artaud J., Asakawa S., Asakura N., Ashikawa N., Balaguer D., Barbato E., Barrera G., Baruzzo M., Baulaigue O., Bayetti P., Bécoulet M., Benkadda S., Benoit F., Besi U., Beurskens M., Boccaccini L., Bolzonella T., Borba D., Botija J., Bourdelle C., Brolatti G., Bruschi A., Bucalossi J., Cara P., Challis C., Chantant M., Chapman I., Chesny P., Chiba S., Ciayznski D., Cismondi F., Cocilovo V., Coletti R., Coletti A., Collins B., Conway G., Corato V., Costa P., Cucchiaro A., Dael A., Davis S., Day C., De Baar M., Decool P., Della Corte A., Delrez C., De Vries P., Decker J., Di Zenobio A., Di Pace L., Di Pietro E., Disset G., Donati A., Douai D., Dougnac H., Drotziger S., Duchateau J.L., Duglue D., Dumas N., Ejiri A., Endo Y., Farina D., Fernandez P., Ferro A., Fietz W., Figini L., Fslchetto G., Fujita T., Fukuda T., Fukumoto M., Fukuyama A., Furukawa M., Furukawa M., Gaio E., Garcia J., Garzotti L., Gauthier E., Genini L., Geraud A., Ginoulhiac G., Giruzzi G., Gomez Carrasco B., Gonde R., Goniche M., Gouat P., Gros G., Haga S.

    Nuclear Fusion   Vol. 53 ( 10 )   2013.10

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    The JT-60SA project implemented by Japan and Europe is progressing on schedule towards the first plasma in March 2019. After careful R&D, procurements of the major components have entered their manufacturing stages. In parallel, disassembly of JT-60U has been completed on time, and the JT-60SA tokamak assembly is expected to start in January 2013. The JT-60SA device, a highly shaped large superconducting tokamak with a variety of plasma control actuators, has been designed in order to contribute to ITER and to complement ITER in all the major areas of fusion plasma development necessary to decide DEMO reactor construction. Detailed assessments and prediction studies of the JT-60SA plasma regimes have confirmed these capabilities: using ITER- and DEMO-relevant plasma regimes, heating conditions, and its sufficiently long discharge duration, JT-60SA enables studies on magnetohydrodynamic stability at high beta, heat/particle/momentum transport, high-energy ion physics, pedestal physics including edge localized mode control, and divertor physics. By integrating these studies, the project provides 'simultaneous and steady-state sustainment of the key performance characteristics required for DEMO' with integrated control scenario development.

    DOI: 10.1088/0029-5515/53/10/104010

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  228. Control of 3D edge radiation structure with resonant magnetic perturbation fields applied to the stochastic layer and stabilization of radiative divertor plasma in LHD Reviewed

    M. Kobayashi, S. Masuzaki, I. Yamada, Y. Narushima, C. Suzuki, N. Tamura, B. J. Peterson, S. Morita, C. F. Dong, N. Ohno, S. Yoshimura, Y. Feng, M. Goto, K. Sato, T. Akiyama, K. Tanaka

    Nuclear Fusion   Vol. 53 ( 9 )   2013.9

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    It is found that resonant magnetic perturbation (RMP) fields have a stabilizing effect on the radiating edge plasma, realizing stable sustainment of radiative divertor (RD) operation in the Large Helical Device (LHD). Without RMP, thermal instability leads to radiative collapse. Divertor power load is reduced by a factor of 3-10 during the RMP-assisted RD phase, while maintaining relatively good core plasma confinement with confinement enhancement factor . It has also been demonstrated that the RMP field itself can initiate transition to RD operation by increasing perturbation strength, while keeping constant density and injection power. The results show a possibility of a new control knob for divertor power load in a 3D magnetic field configuration. It is also found that after the transition to RD, the energy confinement enhancement factor based on ISS04 scaling increases by a factor of 1.4 compared with the attached phase. The operation range of the RMP-assisted RD is identified in terms of RMP strength and radial location of the resonance layer of the RMP. A 3D edge radiation structure is analysed using the edge transport code EMC3-EIRENE and the results are compared with experiments. The comparison indicates that the application of RMP modulates the 3D edge radiation structure such that an intense radiation appears around the X-point of the m/n = 1/1 island in the case with RMP, while it is located at the inboard side without RMP. © 2013 IAEA, Vienna.

    DOI: 10.1088/0029-5515/53/9/093032

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  229. Growth Annealing Equilibrium of Tungsten Nanostructures by Helium Plasma Irradiation in Non Eroding Regimes Reviewed

    S.Kajita, N.Ohno, M.Yajima, J.Kato

    Journal of Nuclear Materials   Vol. 440 ( 1-3 ) page: 55-62   2013.9

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  230. Influence of crystal orientation on damages of tungsten exposed to helium plasma Reviewed

    N.Ohno, Y.Hirahata, M.Yamagiwa, S.Kajita, M.Takagi, N.Yoshida, R.Yoshihara, T.Tokunaga, M.Tokitani

    Journal of Nuclear Materials   Vol. 438   page: S879-S882   2013.7

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  231. Study of Hydrogen Isotopes Behavior in Carbon Based Materials with In-Situ Ion Beam Analysis under Plasma Exposure Reviewed

    Y.Nakamura, M.Yamagiwa, T.Kaneko, N.Matsunami, N.Ohno, S.Kajita, M.Takagi, M.Tokitani, S.Masuzaki

    Journal of Nuclear Materials   Vol. 438   page: S1036-S1039   2013.7

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  232. Tritium retention in nanostructured tungsten with large effective surface area Reviewed

    M.Yajima, Y.Hatano, S.Kajita, J.Shi, M.Hara, N.Ohno

    Journal of Nuclear Materials   Vol. 438   page: S1142-S1145   2013.7

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  233. Enhancement of multi-pulse laser induced damage threshold on Cu mirror under vacuum condition Reviewed

    S.Kajita, R.Yasuhara, M.Sato, N.Ohno, M.Tokitani, N.Yoshida

    Optics Express   Vol. 21 ( 14 ) page: 17275-17284   2013.7

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  234. Development of steady/transient dual plasma irradiation device using a plasma gun Reviewed

    S.Kajita, N.Ohno, T.Akiyama, T.Nihashi, T.Uchiyama, M.Osaka, Y.Kikuchi, M.Nagata

    Journal of Nuclear Materials   Vol. 438   page: S707-S710   2013.7

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  235. Influence of crystal orientation on damages of tungsten exposed to helium plasma Reviewed

    N.Ohno, Y.Hirahata, M.Yamagiwa, S.Kajita, M.Takagi, N.Yoshida, R.Yoshihara, T.Tokunaga, M.Tokitani

    Journal of Nuclear Materials   Vol. 438   page: S879-S882   2013.7

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  236. Thermal radiation characteristics and direc evidence of tungsten cooling on the way to nanostructure formation on its surface Reviewed

    S.Takamura, T.Miyamoto, N.Ohno

    Journal of Nuclear Materials   Vol. 438   page: S814-S817   2013.7

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  237. Recent results of divertor simulation research using an end-cell of a large tandem mirror device Reviewed

    Y. Nakashima, H. Takeda, K. Ichimura, K. Hosoi, M. Sakamoto, M. Hirata, M. Ichimura, R. Ikezoe, T. Imai, T. Ishii, T. Kariya, I. Katanuma, J. Kohagura, R. Minami, T. Numakura, H. Ueda, M. Yoshikawa, N. Asakura, T. Furuta, A. Hatayama, et al.(N.Ohno No.27)

    Journal of Nuclear Materials   Vol. 438   page: S738-S741   2013.7

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  238. Kinetic effect of high energy ions on the temperature profile in the boundary plasma region Reviewed

    N.Ezumi, Y.Hayashi, K.Todoroki, K.Okazaki, H.Tanaka, S.Masuzaki, N.Ohno

    Journal of Nuclear Materials   Vol. 438   page: S472-S474   2013.7

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  239. Divertor heat and particle control experiments on the large helical device Reviewed

    S. Masuzaki, M.Kobayashi, T.Akiyama, N.Ohno, T.Morisaki, et al.

    Journal of Nuclear Materials   Vol. 438   page: S133-S138   2013.7

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  240. Study of hydrogen isotopes behavior in carbon based materials with in situ ion beam analysis under plasma exposure Reviewed

    Y. Nakamura, M. Yamagiwa, T. Kaneko, N. Matsunami, N. Ohno, S. Kajita, M. Takagi, M. Tokitani, S. Masuzaki

    Journal of Nuclear Materials   Vol. 438   page: S1036-S1039   2013.7

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  241. Edge and divertor plasma measurements with ion sensitive and Mach probes in LHD Reviewed

    Y.Hayashi, N.Ezumi, S.Masuzaki, H.Tanaka, M.Kobayashi, K.Sawada, N.Ohno, the LHD Experiment Group

    Journal of Nuclear Materials   Vol. 438   page: S1228-S1231   2013.7

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  242. Tritium retention in nanostructured tungsten with large effective surface area Reviewed

    M.Yajima, Y.Hatano, S.Kajita, J.Shi, M.Hara, N.Ohno

    Journal of Nuclear Materials   Vol. 438   page: S1142-S1145   2013.7

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  243. Properties of deposited layer formed by interaction with Be seeded D-He mixture plasma and tungsten Reviewed International coauthorship International journal

    Tokunaga K., Baldwin M.J., Nishijima D., Doerner R.P., Nagata S., Tsuchiya B., Kurishita H., Fujiwara T., Araki K., Miyamoto Y., Ohno N., Ueda Y.

    Journal of Nuclear Materials   Vol. 442 ( 1-3 SUPPL.1 )   2013.6

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    Be-seeded, high-flux, deuterium/helium mixture plasma exposure experiments on tungsten target materials have been performed to simulate ITER all tungsten divertor erosion/modification and deposition phenomena. The exposure conditions are kept fixed at a typical low-ion-energy of 60 eV and a flux of 3-6 × 1022/m2/s. Sample temperature is 1123 K and plasma exposure times spanning 1050-10,100 s are explored. The typical ratio of He/D ions is 0.2 and Be content is 0.2%. A He-induced nanostructure layer is formed on the exposure surfaces of tungsten materials and the surface of the nanostructure is covered by a thin layer of Be and O. A fraction of the re-eroded Be from the target is deposited on a glassy carbon plate with line of sight to the tungsten target. Rutherford backscattering spectrometry analyses show that the Be redeposit layer is in the form of laminae. Small amounts of Mo, W and C are also found in the redeposited Be layer. Elastic recoil detection analyses show that D, He and H are also included in the redeposited Be layer. © 2013 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.jnucmat.2013.05.006

    Scopus

  244. Field Emission Property of Nanostuructured Tungsten Formed by Helium Plasma Irradiation Reviewed

    S.Kajita, N.Ohno, Y.Hirahata, M.Hiramatsu

    Journal of Fusion Engineering and Design   Vol. 88   page: 2842-2847   2013.6

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  245. Power Transmission Factor for Tungsten Target W/WO Fiber-form Nanostructure in He Plasmas with Hot Electron Component using Compact Plasma Device AIT-PID Reviewed

    S.Takamura, T.Miyamoto, N.Ohno

    Transactions of Fusion Science and Technology   Vol. 63   page: 225-228   2013.5

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  246. Investigation of Advanced Divertor Magnetic Configuration for Demo Tokamak Reactor Reviewed

    N.Asakura, K.Shinya, K.Tobita, K.Hoshino, K.Shimizu, H.Utoh, Y.Someya, M.Nakamura, N.Ohno, M.Kobayashi, H.Tanaka

    Transactions of Fusion Science and Technology   Vol. 63 ( 1T ) page: 70-75   2013.5

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  247. Impact of arcing on carbon and tungsten: from the observations in JT-60U, LHD and NAGDIS-II Reviewed

    S.Kajita, M.Fukumoto, M.Tokitani, T.Nakano, Y.Noiri, N.Ohno, S.Masuzaki, S.Takamura, N.Yoshida, Y.Ueda

    Nuclear Fusion   Vol. 53   page: 053013(9 pp)   2013.4

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    DOI: 10.1088/0029-5515/53/5/053013

  248. Helium plasma implantation on metals: Nanostructure formation and visible-light photocatalytic response Reviewed

    S.Kajita, T.Yoshida, D.Kitaoka, R.Etoh, M.Yajima, N.Ohno, H.Yoshida, N.Yoshida, Y.Terao

    Journal of Applied Physics   Vol. 113   page: 134301(8 pp)   2013.4

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    DOI: doi.org/10.1063/1.4798597

  249. Assessment of multi-pulse laser-induced damage threshold of metallic mirrors for Thomson scattering system Reviewed

    M.Sato, S.Kajita, R.Yasuhara, N.Ohno, M.Tokitani, N.Yoshida, Y.Tawara

    Optics Express   Vol. 21 ( 8 ) page: 9333-9342   2013.4

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  250. Comparison of damages on tungsten surfac exposed to noble gas plasmas Reviewed

    M.Yajima, M.Yamagiwa, S.Kajita, N.Ohno et al.

    Plasma Science & Technol.   Vol. 15   page: 282-286   2013.3

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  251. Two-dimensional visualization of excitation temperature and chemical species in divertor plasmas: Trace CD molecules by chemical sputtering of fusion plasma reactor wall Reviewed

    Z.Cui, K.Kodama, M.Yamamoto, Q.Shen, M.Yoshimi, S.Kajita, N.Ohno, K.Kitagawa

    Microchemical Journal   Vol. 106   page: 174-179   2013.1

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  252. Influence of the Probe Electrode on Probe Measurements for Atmospheric Pressure Microwave Plasma Torch Reviewed International journal

    Ezumi N., Kodama N., Akahane K., Shiozawa S., Sawada K., Ohno N.

    Contributions to Plasma Physics   Vol. 53 ( 1 ) page: 81 - 85   2013.1

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    In this study, in order to clarify the influence of a probe electrode during probe measurements of an atmospheric pressure microwave plasma, simultaneous observations of probe current and the change of plasma shape using a high-speed camera have been done. Fast and random repetitions of attachment and detachment of the plasma torch to the probe electrode have been observed. It is found that the response time is related to ion sound speed. Different behaviors of the plasma torch for a floating metal electrode or an insulator have been observed. Probe current-voltage characteristics show asymmetric double probe shape © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

    DOI: 10.1002/ctpp.201310014

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  253. First Principles Investigation on Trapping of Multiple Helium Atoms within a Tungsten Monovacancy Reviewed

    A.Takayama, A.M.Ito, S.Saito, N.Ohno, H.Nakamura

    Japanese Journal of Applied Physics   Vol. 52   page: 01AL03(4 pp)   2013

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  254. Deuterium Atomic Density Estimation in Recombining Plasmas Using Self-Absorption Spectroscopy Reviewed

    S.Kajita, T.Nishiwaki, N.Ohno, K.Sawada, M.Takagi

    IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING   Vol. 8 ( 1 ) page: 1-6   2013

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  255. Intermittent transport in edge plasma with a 3-D magnetic geometry in the Large Helical Device Reviewed

    H.Tanaka, S.Masuzaki, N.Ohno, T.Morisaki, Y.Tsuji, the LHD Experiment Group

    Journal of Nuclear Materials   Vol. 438   page: S563-S566   2013

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  256. Observation of Arc Spots Initiated on Nanostructured Tungsten Reviewed

    S.Kajita, N.Ohno, S.Takamura

    IEEE TRANSACTIONS ON PLASMA SCIENCE   Vol. 41 ( 8, Part 2 ) page: 1889-1895   2013

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  257. Extension of operation regimes and investigation of three-dimensional currentless plasmas in the Large Helical Device Reviewed

    O.Kaneko, H.Yamada, S.Inagaki, M.Jakubowski, S.Kajita, et al.(N.Ohno is the 104th author))

    Nucl. Fusion   Vol. 53   page: 104015(11 pp)   2013

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  258. First-Principles Investigation on Trapping of Multiple Helium Atoms within a Tungsten Monovacancy Reviewed

    A.Takayama, A.M.Ito, S.Saito, N.Ohno, H.Nakamura

    Jpn. J. Appl. Phys.   Vol. 52   page: 01AL023(4 pp)   2013

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  259. Effect of resistivity profile on current decay time of initial phase of current quench in neon-gas-puff inducing disruptions of JT-60U Reviewed

    S.Kawakami, Y.Shibata, K.Y.Watanabe, N.Ohno, A.Isayama, T.Takizuka, Y.Kawano, M.Okamoto

    Physics of Plasmas   Vol. 20   page: 112507(6 pp)   2013

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  260. Degradation of optical reflectivity of in-vessel mirror materials by helium bombardment Reviewed

    S.Kajita, M.Tokitani, T.Saekim N.Ohno, N.Yoshida

    J. Nucl. Mater.   Vol. 417   page: 838-841   2013

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  261. Behavior of Plasma Response Field in Detached Plasma Reviewed International journal

    NARUSHIMA Yoshiro, KOBAYASHI Masahiro, AKIYAMA Tsuyoshi, SAKAKIBARA Satoru, MASUZAKI Suguru, ASHIKAWA Naoko, OHNO Noriyasu

    Plasma and Fusion Research   Vol. 8 ( 0 ) page: 1402058 - 1402058   2013

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    Sustaining a detached plasma is important for the reduction of the heat load on a divertor. The externally controlled methods such as gas puffing in the divertor region, etc. have been studied for maintaining detached plasmas. In the recent LHD experiments, a resonant magnetic perturbation (RMP) is utilized to establish the detached plasma, which is one of the candidates to reduce the divertor heat load. The finite plasma response field has been detected when the RMP is imposed, and its behavior is investigated from the viewpoint of the magnetic island dynamics. A parameter of the phase difference, Δ<i>θ</i> (defined as the phase difference between the plasma response field and the RMP), changes from antiphase to in-phase while the plasma transits from the attached to the detached states. Finally, when the Δ<i>θ</i> reaches at certain critical value, Δ<i>θ</i><sub>crit</sub>, the plasma enters the detached state. Since this critical value does not have a dependency on plasma beta and collisionality, Δ<i>θ</i><sub>crit </sub>seems to be a threshold to establish the detached plasma. From the viewpoint of magnetic island dynamics, the behavior of Δ<i>θ</i> approaching in-phase implies the "trend" of island growth. The detached plasma might be established in the case of the tendency for the plasma response field to reinforce the island width.

    DOI: 10.1585/pfr.8.1402058

  262. Thermal radiation characteristics and direct evidence of tungsten cooling on the way to nanostructure formation on its surface Reviewed International journal

    Takamura S., Miyamoto T., Ohno N.

    Journal of Nuclear Materials   Vol. 438 ( SUPPL )   2013

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    The physical properties of tungsten with nanostructure on its surface are investigated focusing on the thermal radiation and cooling characteristics. First, direct evidence of substantial W surface cooling has been clearly shown with use of a very thin thermocouple inserted into W target, which solves an uncertainty associated with a radiation thermometer. Second, the above measurements of W surface temperature make it possible to estimate quantitatively the total emissivity from which we may evaluate the radiative power through the Stefan-Boltzmann equation, which is very important for mitigation evaluation of a serious plasma heat load to the plasma-facing component. © 2013 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.jnucmat.2013.01.176

    Scopus

  263. Preliminary experiments on the vertical stability with helical coils in a small tokamak, HYBTOK-II Reviewed International journal

    Hatakeyama S., Shibata Y., Kawakami S., Tsutsui H., Tsuji-Iio S., Shimada R., Ohno N., Akiyama T., Suzuki Y., Watanabe K.

    39th EPS Conference on Plasma Physics 2012, EPS 2012 and the 16th International Congress on Plasma Physics   Vol. 1   page: 285 - 288   2012.12

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    In summary, we proposed saddle shaped stellarator system for vertical mode in toka-mak. These preliminary results demonstrate the feasibility of vertical stability, even if only two selected coils which are localized at one side of the torus. However as noted earlier, the experiment were conducted with the circular cross-section tokamak which is stable vertically. Further work is needed to confirm the improvement in the vertical stability in elongated tokamaks. In addition, very large coil current comparable to the plasma current are needed in our system. In order to reduce the current, future work also should focus on optimal configuration of the coils.

    Scopus

  264. Blob/Hole Generation in the Divertor Leg of the Large Helical Device Reviewed

    H.Tanaka, N.Ohno, Y.Tsuji, S.Kajita, S.Masuzaki, M.Kobayashi, T.Morisaki, A.Komori and the LHD Experimental Group

    Plasma and Fusion Research   Vol. 7   page: 1402152(6 pp)   2012.11

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    DOI: 10.1585/pfr.7.1402152

  265. Fatal Damages due to Breakdown on a Diagnostic Mirror Located outside the Vacuum Vessel in JT-60U Reviewed

    S.Kajita, T.Hatae, T.Sakuma, S.Takamura, N.Ohno, K.Itami

    Plasma and Fusion Research   Vol. 7   page: 2405121(4 pages)   2012.9

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    DOI: 10.1585/pfr.7.2405121

  266. Optical properties of nanostructured tungsten in near infrared range Reviewed

    S.Kajita, N.Ohno, T.Yokochi, N.Yoshida, R.Yoshihara, S.Takamura, T.Hatae

    Plasma Physics and Controlled Fusion   Vol. 54   page: 105015(7 pages)   2012.9

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    DOI: 10.1088/0741-3335/54/10/105015

  267. Superimposition of Pulses to Steady Arc Discharge in Toroidal Divertor Simulator Reviewed

    S.Kajita, T.Uchiyama, N.Ohno

    Plasma and Fusion Research   Vol. 7   page: 1405100(6 pages)   2012.7

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    DOI: 10.1585/pfr.7.1405100

  268. Statistical Analysis of the Spatial Behavior of Plasma Blobs Around the Plasma Column in a Linear Plasma Device Reviewed

    H.Tanaka, N.Ohno, Y.Tsuji, K.Okazaki, S.Kajita

    Contrib. Plasma Phys.   Vol. 52 ( 5-6 ) page: 424 - 428   2012.6

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    DOI: 10.1002/ctpp.201210027

  269. Effect of Externally Applied Resonance Magnetic Perturbation on Current Decay during Tokamak Disruption Reviewed

    Y.Kanazawa, Y.Shibata, M.Okamoto, N.Ohno, S.Kajita

    Plasma and Fusion Research   Vol. 7   page: 1202049(2 pages)   2012.6

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    DOI: 10.1585/pfr.7.1202049

  270. Effect of neutral pressure on the He plasma flow measurement in a linear device Reviewed International coauthorship

    E.-K.Park, H.-J.Woo, K.-S.Chung, H.Tanaka, S.Kajita, N.Ohno

    Current Applied Physics   Vol. 12   page: 1479 - 1502   2012.5

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    DOI: 10.1016/j.cap.2012.04.024

  271. Transition in Plasma Fluctuation between Attached and Detached Plasmas Reviewed

    K.Okazaki, H.Tanaka, N.Ohno, S.Kajita

    Plasma and Fusion Research   Vol. 7   page: 1201033(2 pages)   2012.4

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    DOI: 10.1585/pfr.7.1201033

  272. Arcing on tungsten subjected to helium and transients: ignition conditions and erosion rates Reviewed International journal

    S.Kajita, N.Ohno, N.Yoshida, R.Yoshihara, S.Takamura

    PLASMA PHYSICS AND CONTROLLED FUSION   Vol. 54 ( 3 )   2012.2

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    Arcing is a long standing plasma-surface interaction issue in nuclear fusion research, and the issue has been revived recently from new points of view. In this study, arcing under fusion relevant conditions is demonstrated in a linear plasma device using a pulsed laser to mimic the transient heat load. Ignition conditions of arcing were investigated systematically by changing the laser power, plasma conditions, surface nature and so on. Moreover, the cross-sectional view of arc trail was observed by transmission electron microscope, and the erosion of nanostructured tungsten due to arcing was estimated. It was found that more than half of the nanostructured tungsten still remained after an arc spot run on the nanostructure.

    DOI: 10.1088/0741-3335/54/3/035009

    Web of Science

  273. TEM analysis of high temperature annealed W nanostructure surfaces Reviewed International journal

    Shin Kajita, Naoaki Yoshida, Reiko Yoshihara, Noriyasu Ohno, Takanori Yokochi, Masayuki Tokitani, Shuichi Takamura

    JOURNAL OF NUCLEAR MATERIALS   Vol. 421 ( 1-3 ) page: 22 - 27   2012.2

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    Helium plasma irradiation and electron heating experiments were conducted using tungsten in the divertor simulator NAGDIS-II. Helium plasma irradiation to tungsten led to the formation of nanostructures on the surface, while the nanostructures were annihilated after the potential of the specimen was changed to positive for several 10 min so that electrons irradiated the sample without ion irradiation. The specimens were analyzed in detail by transmission electron microscope with the help of focused ion beam technique. It is revealed that the helium nano-bubbles still remained even after the nanostructures were disappeared from the surface. Porosity of the nanostructured tungsten was measured from the TEM images. (c) 2011 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.jnucmat.2011.11.044

    Web of Science

  274. Anisotropic Graphite Erosion in Low-Temperature and high-Density Deuterium Plasma Reviewed

    M.Teraoka, N.Ohno, S.Kajita, T.Nishiwaki, A.M.Ito, H.Nakamura

    Jpn. J. Appl. Phys.   Vol. 51   page: 01AB03 (5pp)   2012.1

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    DOI: 10.1143/JJAP.51.01AB03

  275. Near Infrared Radiation from Heated Nanostructured Tungsten Reviewed

    S.Kajita, T.Yokochi, N.Ohno, T.Kumano

    Jpn. J. Appl. Phys.   Vol. 51   page: 01AJ03 (5pp)   2012.1

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    DOI: 10.1143/JJAP.51.01AJ03

  276. Measurement of ion and electron temperatures in plasma blobs by using an improved ion sensitive probe system and statistical analysis methods Reviewed International journal

    K. Okazaki, H. Tanaka, H. Tanaka, N. Ohno, N. Ezumi, Y. Tsuji, S. Kajita

    Review of Scientific Instruments   Vol. 83   2012.1

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    We have measured ion temperature as well as electron temperature in plasma blobs observed in a linear plasma device by using an improved ion sensitive probe. Current-voltage characteristics of the ion sensitive probe inside and outside plasma blobs were re-constructed with a conditional sampling method. It is clearly found that both ion and electron temperatures in plasma blobs decrease more slowly in a cross-field direction than those in a bulk plasma without plasma blobs. © 2012 American Institute of Physics.

    DOI: 10.1063/1.3681778

    Scopus

  277. Electric Field at a Plasma-Facing Wall for a Two-Temperature Electron Distribution Reviewed

    Y.Tomita, G.Kawamura, M.Ueno, N.Ohno, Z.H.Huang, Y.D.Pan, L.W.Yan

    Contrib. Plasma Phys.   Vol. 52 ( 5-6 ) page: 484-489   2012

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  278. Thermionic Energy Converter System Using Heat Flux in Divertor Region Reviewed

    D.Oikawa, N.Ohno, S.Kajita, M.Takagi, S.Masuzaki, M.Tokitani, K.Asano

    Plasma and Fusion Research   Vol. 7   page: 1405050(8 pages)   2012

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  279. Conditions for the Release of a Metallic Dust Particle from a Plasma-Facing Wall Reviewed

    M.Ueno, N.Ohno, Y.Tomita, G.Kawamura

    Contrib. Plasma Phys.   Vol. 52 ( 5-6 ) page: 478-483   2012

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  280. Effects of fibre-form nanostructures on particle emissions from a tungsten surface in plasmas Reviewed

    S.Takamura, T.Miyamoto, N.Ohno

    Nuclear Fusion   Vol. 52   page: 123001(8 pages)   2012

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  281. Validation of the current decay model in the initial phase of current quench in high disruptive discharges of JT-60U Reviewed International journal

    Shibata Y., Watanabe K., Ohno N., Okamoto M., Isayama A., Kurihara K., Oyama N., Nakano T., Kawano Y., Sugihara M.

    38th EPS Conference on Plasma Physics 2011, EPS 2011 - Europhysics Conference Abstracts   Vol. 35 2   page: 1628 - 1631   2011.12

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    The validation of current decay model during the current quench was investigated in high (3p disruptive discharges on JT-60U. It is experimentally confirmed that the electron temperature does not play an important role in the determination of the current decay time in the initial phase of current quench and that values obtained from L/R model are two orders of magnitude larger than the experimental current decay time. The current decay time predicted by the modified L/R model, in which the time derivative of plasma inductance is taken into account, is in fairly good agreement with the experimental data. In future work, we need to perform the MHD equilibrium code for free-boundary condition such as DINA [5] and TSC [6] code under the axisymmetric assumption in order to clear up the determination mechanism of time derivative of plasma inductance.

    Scopus

  282. Recent progress of tungsten R&amp;D for fusion application in Japan Reviewed International journal

    Ueda Y., Lee H.T., Ohno N., Kajita S., Kimura A., Kasada R., Nagasaka T., Hatano Y., Hasegawa A., Kurishita H., Oya Y.

    Physica Scripta T   Vol. T145   2011.12

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    The status of ongoing research projects of tungsten R&D in Japan is summarized in this paper. For tungsten material development, a new improved fabrication technique, the so-called superplasticity-based microstructural modification, is described. This technique successfully improved fracture strength and ductility at room temperature. Recent results on vacuum plasma spray W coating and W brazing on ferritic steels and vanadium alloys are explained. Feasibility of these techniques for the manufacture of the blanket is successfully demonstrated. The latest findings on the effect of neutron damage in tungsten on T retention and on the change in mechanical and electrical properties are described. Retention characteristics for neutron-damaged W were different compared to those for ion-damaged W. Upon neutron irradiation, tungsten alloys containing transmutation elements of W (Re and Os) show changes in properties that are different compared with those shown by pure W. The effects of mixed plasma exposure (D/He/C) are described. Both D/He and D/C mixed ion irradiations significantly affect ion-driven permeation in W. He bubble dynamics play a key role in nano-structure formation on the W surface. © 2011 The Royal Swedish Academy of Sciences.

    DOI: 10.1088/0031-8949/2011/T145/014029

    Scopus

  283. Deuterium retention in Fe <inf>2</inf>O <inf>3</inf> under low-energy deuterium-plasma exposure Reviewed International journal

    Matsunami N., Sogawa T., Sakuma Y., Ohno N., Tokitani M., Masuzaki S.

    Physica Scripta T   Vol. T145   2011.12

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    Stainless steel (SUS) is used as the structure material in nuclear fusion devices. Heating and O 2 plasma discharge are considered for the removal of tritium. Oxide layer growth is anticipated on heating SUS at a high temperature in low-pressure residual O 2 gas. When O 2 plasma discharge is performed, oxygen plasma reaches the structure material and iron oxides such as Fe 2O 3 are formed. Thus, a knowledge of the retention behavior of hydrogen isotopes or deuterium (D) in the oxide layers is important in designing the devices. We investigated D retention in Fe 2O 3 films and the influence of Fe 2O 3 crystal structure on D retention and found that D retention in γ-Fe 2O 3 (cubic-maghemite) is larger than that in α-Fe 2O 3 (hexagonal-hematite). The results for Fe 2O 3 are compared with those for SUS and Fe. © 2011 The Royal Swedish Academy of Sciences.

    DOI: 10.1088/0031-8949/2011/T145/014042

    Scopus

  284. TEM observation of the growth process of helium nanobubbles on tungsten: Nanostructure formation mechanism Reviewed International journal

    Kajita Shin, Yoshida Naoaki, Yoshihara Reiko, Ohno Noriyasu, Yamagiwa Masato

    JOURNAL OF NUCLEAR MATERIALS   Vol. 418 ( 1-3 ) page: 152 - 158   2011.11

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    DOI: 10.1016/j.jnucmat.2011.06.026

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  285. Helium bubble formation on tungsten in dependence of fabrication method Reviewed International journal

    Yamagiwa Masato, Kajita Shin, Ohno Noriyasu, Takagi Makoto, Yoshida Naoaki, Yoshihara Reiko, Sakaguchi Wataru, Kurishita Hiroaki

    JOURNAL OF NUCLEAR MATERIALS   Vol. 417 ( 1-3 ) page: 499 - 503   2011.10

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    DOI: 10.1016/j.jnucmat.2011.02.007

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  286. Nanoscale surface morphology of tungsten materials induced by Be-seeded D-He plasma exposure Reviewed International journal

    Tokunaga K., Baldwin M. J., Doerner R. P., Nishijima D., Kurishita H., Fujiwara T., Araki K., Miyamoto Y., Ohno N., Ueda Y.

    JOURNAL OF NUCLEAR MATERIALS   Vol. 417 ( 1-3 ) page: 528 - 532   2011.10

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    DOI: 10.1016/j.jnucmat.2011.01.078

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  287. Exfoliation of the tungsten fibreform nanostructure by unipolar arcing in the LHD divertor plasma Reviewed International journal

    Tokitani M., Kajita S., Masuzaki S., Hirahata Y., Ohno N., Tanabe T.

    NUCLEAR FUSION   Vol. 51 ( 10 )   2011.10

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    DOI: 10.1088/0029-5515/51/10/102001

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  288. Development of Nanostructured Black Metal by Self-Growing Helium Bubbles for Optical Application Reviewed International journal

    S.Kajita, T.Saeki, Y.Hirahata, M.Yajima, N.Ohno, R.Yoshihara, N.Yoshida

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 50 ( 8 ) page: 08JG01   2011.8

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    DOI: 10.1143/JJAP.50.08JG01

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  289. Investigation on the effect of temperature excursion on the helium defects of tungsten surface by using compact plasma device Reviewed

    S.Takamura, T.Miyamoto, Y.Tomida, T.Minagawa, N.Ohno

    Journal of Nuclear Materials   Vol. 415   page: S100-S103   2011.8

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    DOI: 10.1016/j.jnucmat.2010.12.021

  290. Exposure of tungsten nano-structure to TEXTOR edge plasma Reviewed International coauthorship

    Y.Ueda, K.Miyata, Y.Ohtsuka, H.T.Lee, M.Fukumoto, S.Brezinsek, J.W.Coenen, A.Kreter, A.Litnovsky, V.Philipps, B.Schweer, G.Sergienko, T.Hirai, A.Taguchi, Y.Torikai, K.Sugiyama, T.Tanabe, S.Kajita, N.Ohno, The TEXTOR team

    Journal of Nuclear Materials   Vol. 415 ( 1 ) page: S92 - S95   2011.8

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    DOI: 10.1016/j.jnucmat.2010.08.019

  291. Divertor simulation experiment and its future research plan making use of a large tandem mirror device Reviewed International journal

    Nakashima Y., Takeda H., Hosoi K., Yonenaga R., Katanuma I., Ichimura K., Ichimura M., Imai T., Ishii T., Kariya T., Kiwamoto Y., Minami R., Miyata Y., Ozawa H., Shidara H., Yamaguchi Y., Yoshikawa M., Asakura N., Hatayama A., Higashizono Y., Kado S., Masuzaki S., Nishino N., Ohno N., Ueda Y.

    Journal of Nuclear Materials   Vol. 415 ( 1 SUPPL )   2011.8

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    Divertor simulation study has been started as a new research plan, by making best use of a large linear plasma device. The experiment of generating the plasma flow with high heat and particle flux was successfully performed at an end-mirror exit of the GAMMA 10 tandem mirror. In typical hot-ion-mode plasmas, the heat-flux density of 0.6 MW/m2 and the particle-flux density of 1022 particles/s m2 were simultaneously achieved in the case of only ICRF heating and superimposing the 300 kW ECH pulse attained the peak value of the net heat-flux up to 8 MW/m2 on axis. The above experimental results and the simulation analysis of ICRF heating using the Fokker-Planck code give a clear prospect of generating the required performance for divertor studies by building up the plasma heating systems to the end-mirror cell. Detailed behavior of the plasma flow and the future research plan are also described. © 2010 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.jnucmat.2010.11.081

    Scopus

  292. Motion of unipolar arc spots ignited on a nanostructured tungsten surface Reviewed

    S.Kajita, S.Takamura, N.Ohno

    Plasma Physics and Controlled Fusion   Vol. 53 ( 7 ) page: 074002   2011.5

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    DOI: 10.1088/0741-3335/53/7/074002

  293. Molecular Dynamics Simulation of Hydrogen Injection onto Diamond Surfaces Reviewed

    H.Nakamura, A.M.Ito, S.Saito, A.Takayama, Y.Tamura, N.Ohno, S.Kajita

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 50 ( 1 ) page: 01AB04(4 pages)   2011.1

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    DOI: 10.1143/JJAP.50.01AB04

  294. Molecular Dynamics Simulation of Chemical Vapor Deposition of Amorphous Carbon: Dependence on H/C Ratio of Source Gas Reviewed

    A.M.Ito, A.Takayama, S.Saito, N.Ohno, S.Kajita, H.Nakamura

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 50 ( 1 ) page: 01AB01(6 pages)   2011.1

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    DOI: 10.1143/JJAP.50.01AB01

  295. Formation of Metallic Nanostructure by Helium Plasma Irradiation Reviewed

    S.Kajita, T.Saeki, Y.Hirahata, N.Ohno

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 50 ( 1 ) page: 01AH02   2011.1

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    DOI: 10.1143/JJAP.50.01AH02

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  296. Practical selection of emission lines of He I to determine the photon absorption rate Reviewed

    S.Kajita, N.Ohno

    Review of Scientific Instruments   Vol. 82   page: 023501(5 pages)   2011

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  297. Formation and decay processes of Ar/He microwave plasma jet at atmospheric gas pressure Reviewed

    S.Takamura, S.Amano, T.Kurata, H.Kasada, J.Yamamoto, M.A.Razzak, G.Kushida, N.Ohno, M.Kando

    Journal of Applied Physics   Vol. 110   page: 043301 (8 pages)   2011

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  298. Deuterium retention in Fe2O3 under low-energy deuterium-plasma exposure Reviewed

    N.Matsunami, T.Sogawa, Y.Sakuma, N.Ohno, M.Tokitani, S.Masuzaki

    Physica Scripta   Vol. T145   page: 014042 (4pp)   2011

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  299. In situ measurement of hydrogen isotope retention using a high heat flux plasma generator with ion beam analysis Reviewed

    M.Yamagiwa, Y.Nakamura, N.Matsunami, N.Ohno, S.Kajita, M.Takagi, M.Tokitani, S.Masuzaki, A.Sagara and K.Nishimura

    Physica Scripta   Vol. T145   page: 014032 (5pp)   2011

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  300. Recent progress of tungsten R&D for fusion application in Japan Reviewed

    Y.Ueda, H.T.Lee, N.Ohno, S.Kajita, A.Kimura, R.Kasada, T.Nagasaka, Y.Hatano, A.Hasegawa, H.Kurishita and Y.Oya

    Physica Scripta   Vol. T145   page: 014029 (6pp)   2011

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  301. Beryllium erosion induced by transient heat loads and subsequent reactions in a deuterium plasma Reviewed

    S.Kajita, D.Nishijima, R.Doerner, K.Umstadter, J.Yu, N.Ohno, Y.Ueda

    Journal of Nuclear Materials   Vol. 420   page: 252-257   2011

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  302. Study of Plasma Current Decay in the Initial Phase of High Poloidal Beta Disruptions in JT-60U Reviewed International journal

    SHIBATA Yoshihide, MATSUNAGA Go, KAMADA Yutaka, SUGIHARA Masayoshi, WATANABE Kiyomasa, OHNO Noriyasu, OKAMOTO Masaaki, ISAYAMA Akihiko, KURIHARA Kenichi, OYAMA Naoyuki, NAKANO Tomohide, KAWANO Yasunori

    Plasma and Fusion Research   ( 6 ) page: 1302136 - 1302136   2011

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    In order to validate some current decay models during the current quench, the plasma current decay time was studied using the experimental plasma resistance and inductance in high poloidal beta, &beta;<sub>p</sub>, disruptions in JT-60U. The plasma resistance and inductance were evaluated from an equilibrium calculation code and the measurement value of a magnetic sensor, the electron temperature evaluated by using ECE measurement and the electron density measured by FIR interferometer. In high &beta;<sub>p</sub> disruptions, it was found that the electron temperature at the plasma center just after current quench starts was approximately 1-4 keV under almost the same current decay time observed during the initial phase of current quench. This result indicates that the electron temperature itself plays no major role in the determination of the current decay time in the initial phase of current quench. Moreover, the current decay time predicted by a modified L/R model [Y. Shibata et al., Nucl. Fusion 50, 025015 (2010)], in which the time derivative of plasma inductance was considered, was in good agreement with the experimental current decay time, while the values obtained from the conventional L/R model were two orders of magnitude larger than the experimental results.

    DOI: 10.1585/pfr.6.1302136

  303. Midterm summary of Japan-US fusion cooperation program TITAN Reviewed International journal

    Muroga T., Sze D.K., Okuno K., Terai T., Kimura A., Kurtz R.J., Sagara A., Nygren R., Ueda Y., Doerner R.P., Sharpe J.P., Kunugi T., Morley N.B., Hatano Y., Sokolov M.A., Yamamoto T., Hasegawa A., Katoh Y., Ohno N., Tokunaga K., Konishi S., Fukada S., Calderoni P., Yokomine T., Messadek K., Oya Y., Hashimoto N., Hinoki T., Hashizume H., Norimatsu T., Shikama T., Stoller R.E., Tanaka K.A., Tillack M.S.

    Fusion Science and Technology   Vol. 60 ( 1 ) page: 321 - 328   2011

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    Japan-US cooperation program TITAN (Tritium, Irradiation and Thermofluid for America and Nippon) started in April 2007 as 6-year project. This is the summary report at the midterm of the project. Historical overview of the Japan-US cooperation programs and direction of the TITAN project in its second half are presented in addition to the technical highlights.

    DOI: 10.13182/FST11-A12373

    Scopus

  304. Deuterium uptake in iron oxide (Fe<inf>2</inf>O<inf>3</inf>) under D <inf>2</inf><sup>+</sup>-plasma exposure Reviewed International journal

    Sogawa T., Matsunami N., Ohno N., Tokitani M., Masuzaki S.

    AIP Conference Proceedings   Vol. 1321   page: 274 - 277   2010.12

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    We have studied implantation of low-energy deuterium ions into Fe 2O3 films and deuterium (D)-uptake in Fe2O 3 films, which were prepared by oxidation of Fe sheets in air at 400°C for 20 min. X-ray diffraction (XRD) shows that the films are mixture of hexagonal α-Fe2O3 (hematite) and cubic γ-Fe2O3 (maghemite). According to Rutherford backscattering spectroscopy (RBS) of 1.8 MeV H+, the composition is found to be crudely stoichiometric (Fe:O=2:3). The samples were subjected to D2+-plasma exposure using AC-glow discharge. The amount of D-uptake in Fe2O3 is evaluated to be ∼6×10 16cm2 for AC voltage of 1.5 kV in 0.4 Torr of D 2 gas for 15 min. The amount of D-uptake in Fe2O 3 appears to be larger by a factor of three than that in Fe. Comparisons of XRD patterns and RBS spectra before and after D2+-plasma exposure show no appreciable change of the crystalline structure, quality and composition. © 2010 American Institute of Physics.

    DOI: 10.1063/1.3548377

    Scopus

  305. 2D Measurement of Edge Plasma Dynamics by Using High-Speed Camera Based on HeI Line Intensity Ratio Method Reviewed

    Ohno N., Miyamoto K., Kodama K., Kajita S., Kitagawa K.

    CONTRIBUTIONS TO PLASMA PHYSICS   Vol. 50 ( 10 ) page: 962 - 969   2010.11

  306. Enhancement of cross-field transport into the private region of detached-divertor in Large Helical Device Reviewed

    H. Tanaka, N. Ohno, Y. Tsuji, S. Kajita, S. Masuzaki, M. Kobayashi, T. Morisaki, H. Tsuchiya, A.Komori, and LHD Experimental Group

    Physics of Plasmas   Vol. 17   page: 102509(8pages)   2010.10

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    DOI: 10.1063/1.3496389

  307. Nanostructured Black Metal: Novel Fabrication Method by Use of Self-Growing Helium Bubbles Reviewed

    S.Kajita, T.Saeki, N.Yoshida, N.Ohno, A.Iwamae

    Applied Physics Express   Vol. 3   page: 085204-1-3   2010.7

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    DOI: 10.1143/APEX.3.085204

  308. 2D Statistical Analysis of Non-Diffusive Transport under Attached and Detached Plasma Conditions of the Linear Divertor Simulator Reviewed

    H.Tanaka, N.Ohno, Y.Tsuji, S.Kajita

    CONTRIBUTIONS TO PLASMA PHYSICS   Vol. 50 ( 3-5 ) page: 256 - 266   2010.5

  309. Basic Study on the Generation of RF Plasmas in Premixed Oxy-combustion with Methane Reviewed International coauthorship International journal

    Y.Osaka, N.Kobayashi, M.A.Razzak, N.Ohno, S.Takamura, Y.Uesugi

    Plasma and Fusion Research   ( 5 ) page: 010   2010.3

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    Oxy-combustion generates a high temperature field (above 3000 K), which is applied to next generation power plants and high temperature industrial technologies because of N<sub>2</sub> free processes. However, the combustion temperature is so high that the furnace wall may be fatally damaged. In addition, it is very difficult to control the heat flux and chemical species' concentrations because of rapid chemical reactions. We have developed a new method for controlling the flame by electromagnetic force on this field. In this paper, we experimentally investigated the power coupling between the premixed oxy-combustion with methane and radio frequency (RF) power through the induction coil. By optimizing the power coupling, we observed that the flame can absorb RF power up to 1.5 kW. Spectroscopic measurements also showed an increase in the emission intensity from OH radicals in the flame, indicating improved combustibility.

    DOI: 10.1585/pfr.5.010

  310. Study of current decay time during disruption in JT-60U tokamak Reviewed

    Y.Shibata, K.Y.Watanabe, M.Okamoto, N.Ohno, A.Isayama, K.Kurihara, T.Nakano, N.Oyama, Y.Kawano, G.Matsunaga, S.Sakakibara, M.Sugihara, Y.Kamada and the JT-60U team

    Nuclear Fusion   Vol. 50   page: 025015 (7pp)   2010

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  311. Formation Condition of Fiberform Nanostructured Tungsten by Helium Plasma Exposure Reviewed

    W. Sakaguchi, S. Kajita, N. Ohno, et al.

    Plasma Fusion Research   Vol. 5   page: S1023(5pages)   2010

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  312. Design study of the divertor Thomson scattering system for JT-60SA Reviewed

    S. Kajita, T. Hatae, K. Itami, N. Ohno, T. Nakano

    J. Plasma Fus. Res. Series   Vol. 9   page: 157-162   2010

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  313. 2D Measurement of Edge Plasma Dynamics by Using High-Speed Camera Based on HeI Line Intensity Ratio Method Reviewed

    N.Ohno, K.Miyamoto, K.Kodama, S.Kajita, K.Kitagawa

    Contrib. Plasma Physics   Vol. 50 ( 10 ) page: 962-969   2010

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  314. Deepening of Floating Potential for Tungsten Target Plate on the way to Nanostructure Formation Reviewed

    S.Takamura, T.Miyamoto and N.Ohno

    Plasma and Fusion Research: Rapid Communications   Vol. 5   page: 039(2 pages)   2010

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  315. Compact Plasma Device for PWI Studies Reviewed

    S.Takamura, T.Tsujikawa, Y.Tomida, K.Suzuki, T.Minagawa, T.Miyamoto, N.Ohno

    J. Plasma Fusion Res. SERIES   Vol. 9   page: 441-445   2010

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  316. 2D Statistical Analysis of Non-Diffusive Transport under Attached and Detached Plasma Conditions of the Linear Divertor Simulator Reviewed

    H.Tanaka, N.Ohno, Y.Tsuji, S.Kajita

    Contrib. Plasma Physics   Vol. 50 ( 3-5 ) page: 256-266   2010

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  317. Self-Affine Fractality of Bifurcating Arc Trail in Magnetized Plasma Reviewed

    Shin KAJITA, Noriyasu OHNO, Yoshiyuki TSUJI, Hirohiko TANAKA, and Shuichi TAKAMURA

    Journal of the Physical Society of Japan   Vol. 79 ( 5 ) page: 054501(7 pages)   2010

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  318. Fluid Mechanical Characteristics of Microwave Discharge Jet Plasmas at Atmospheric Gas Pressure Reviewed

    S.Takamura, S.Saito, G.Kushida, M.Kando, N.Ohno,

    IEEJ Trans. FM   Vol. 130 ( 5 ) page: 493-500   2010

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  319. Comparison with Surfaces of Diamond and Graphite for Adsorption of Hydrogen Reviewed

    H.Nakamura, A.Ito, S.Saito, Y.Tamura, S.Fujiwara, N.Ohno, S.Kajita

    Proceedings of ITC19, 2009   Vol. 1   2010

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  320. Recent progress in understanding the behavior of dust in fusion devices Reviewed

    S.I.Krasheninnikov, A.Yu Pigarov, R.D.Smirnov, M.Rosenberg, Y.Tanka, D.J.Benson, T.K.Soboleva, T.D.Rognlien, D.A.Mendis, B.D.Bray, D.L.Rudakov, J.H.Yu, W.P.West, A.L.Roquemore, C.H.Skinner, J.L.Terry, B.Lipschultz, A.Bader, R.S.Granetz, C.S.Pitcher, N.Ohno, S.Takamura, S.Masuzaki, N.Ashikawa, M.Shiratani, M.Tokitani, R.Kumazawa, N.Asakura, T.Nakano, A.J.Litnovsky, R.Maqueda and the LHD Experimental Group

    Plasma Physics and Controlled Fusion   Vol. 50 ( 12 ) page: 124054(13 pp)   2010

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  321. Degradation of optical reflectivity of in-vessel mirror materials by helium bombardment Reviewed

    S.Kajita, T.Saeki, N.Ohno, M.Tokitani, T.Hatae, W.Sakaguchi

    J. Nuclear Mater.     2010

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    DOI: doi:10.1016/j.jnucmat.2010.12.205

  322. Tungsten blow-off in response to the ignition of arcing: revival of arcing issue in future fusion devices Reviewed

    S.Kajita, S.Takamura, N.Ohno

    J. Nuclear Mater.     2010

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    DOI: doi:10.1016/jjnucmat_2010.08.030.

  323. Comparison of Hydrogen Adsorption on Diamond and Graphite Surfaces Reviewed International journal

    NAKAMURA Hiroaki, ITO Atsuhi M., SAITO Seiki, TAMURA Yuichi, FUJIWARA Susumu, OHNO Noriyasu, KAJITA Shin

    Plasma and Fusion Research   ( 5 ) page: S2072 - S2072   2010

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    By a classical molecular dynamics (CMD) simulation with a modified Brenner's reactive empirical bond-order (REBO) potential, we found that graphite with zigzag (1010) and armchair (1120) edge states is destroyed more easily than other structures, i.e., graphite with the (0001) surface, and diamond with the (100), (111), (120), and (110) surfaces. Experimental results indicated that graphite is eroded under hydrogen atom injection with E<sub>in</sub> = 0.3 eV, and that diamond is not eroded under the same conditions. Our simulation results are consistent with these experimental results. We also reveal the temperature and saturation dependence of the surface structure of carbon crystals.

    DOI: 10.1585/pfr.5.S2072

  324. Steady-State Operation Scenario and the First Experimental Result on QUEST Reviewed International journal

    HANADA Kazuaki, MAEKAWA Takashi, KISHIMOTO Yasuaki, ISHIGURO Masaki, YOSHINAGA Tomokazu, IGAMI Hiroe, NISHINO Nobuhiro, HONMA Hiroshi, KAWASAKI Shoji, NAKASHIMA Hisatoshi, HIGASHIJIMA Aki, SATO Kohnosuke, HIGASHIZONO Yuta, ANDO Akira, ASAKURA Nobuyuki, EJIRI Akira, HIROOKA Yoshihiko, ISHIDA Akio, KOMORI Akio, MATSUKAWA Makoto, MOTOJIMA Osamu, OGAWA Yuichi, ZUSHI Hideki, OHNO Noriyasu, ONO Yasushi, PENG Martin, SUDO Shigeru, YAMADA Hiroshi, YOSHIDA Naoaki, YOSHIDA Zensho, NAKAMURA Kazuo, SAKAMOTO Mizuki, IDEI Hiroshi, HASEGAWA Makoto, TAKASE Yuichi, MITARAI Osamu

    Plasma and Fusion Research   ( 5 ) page: S1007 - S1007   2010

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    QUEST focuses on the steady state operation of the spherical tokamak by controlled PWI and electron Bernstein wave current drive. One of the main purposes of QUEST is an achievement of long duration discharge with MW-class injected power. As the result, QUEST should be operated in the challenging region on heat and particle handling. To do the particle handling, high temperature all metal wall up to 623 K and closed divertors are planned, which is to realize the steady-state operation under recycling ratio, R = 1. This is a dispensable check to DEMO, because wall pumping should be avoided as possible in the view of tritium retention. The QUEST project will be developed in increment step such as, I. low &beta; steady state operation in limiter configuration, II. low &beta; steady state operation in divertor configuration, III. relatively high &beta; steady state operation in closed divertor configuration. Phase I in the project corresponds to these two years, and final goal of phase I is to make full current drive plasma up to 20 kA. Closed divertor will be designed and tested in the Phase II. QUEST is running from Oct., 2008 and the first results are introduced.

    DOI: 10.1585/pfr.5.S1007

  325. Formation process of tungsten nanostructure by the exposure to helium plasma under fusion relevant plasma conditions Reviewed

    S.Kajita, W.Sakaguchi, N.Ohno, N.Yoshida, T.Saeki

    Nuclear Fusion   Vol. 49   page: 095005(6pp)   2009.8

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    DOI: 10.1088/0029-5515/49/9/095005

  326. Development of Divertor Plasma Simulators with High Heat Flux Plasmas and its Application to Nuclear Fusion Study : A Review Reviewed International journal

    OHNO Noriyasu, KAJITA Shin, TAKAGI Makoto, TAKAMURA Shuichi

    IEEJ transactions on electrical and electronic engineering : official journal of the Institute of Electrical Engineering of Japan / = 電気学会   Vol. 4 ( 4 ) page: 476 - 487   2009.7

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  327. Ray tracing simulation for radiation trapping of the He I resonance transition in a linear plasma device Reviewed International coauthorship

    S.Kajita, D.Nishijima,E.M.Hollmann, N.Ohno

    Physics of Plasmas   Vol. 16   page: 063303   2009.6

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    DOI: 10.1063/1.3157248

  328. Investigation of detached recombining deuterium plasma and carbon chemical erosion in the toroidal divertor simulator NAGDIS-T Reviewed

    K.Yada, N.Matsui, N.Ohno, S.Kajita, S.Takamura, M.Takagi

    Journal of Nuclear Materials   Vol. 390-391   page: 290 - 294   2009.6

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    DOI: 10.1016/j.jnucmat.2009.01.123

  329. Spherical cauliflower-like carbon dust formed by interaction between deuterium plasma and graphite target and its internal structure Reviewed International journal

    Ohno N., Yoshimi M., Tokitani M., Takamura S., Tokunaga K., Yoshida N.

    JOURNAL OF NUCLEAR MATERIALS   Vol. 390-91   page: 61 - 64   2009.6

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    DOI: 10.1016/j.jnucmat.2009.01.051

    Web of Science

  330. Deuterium retention in tungsten oxide under low energy D<inf>2</inf><sup>+</sup> plasma exposure Reviewed International journal

    Matsunami N., Ohno N., Tokitani M.

    Journal of Nuclear Materials   Vol. 390-391 ( 1 ) page: 693 - 695   2009.6

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    W is a candidate for plasma facing material and oxide layers are highly anticipated on W surface. We have studied deuterium (D) retention in tungsten oxide (WO3) films and thermal release of deuterium. WO3 films, prepared by oxidation of W metal sheet, were exposed to D2 plasma under AC glow discharge at the applied voltage V up to a few kV and DC discharge. D-retention in W has been studied for comparison. The amount of D retained in the WO3 films and W were analyzed by detecting α particles from the nuclear reaction, D(3He, α)p, using 0.7 MeV 3He+ ions. We find that D-uptake in WO3 film is much larger than in W. According to thermal desorption, release of D2 occurs at ∼180 and 450 °C. © 2009 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.jnucmat.2009.01.191

    Scopus

  331. Erratum: Comparison of He I line intensity ratio method and electrostatic probe for electron density and temperature measurements in NAGDIS-II (Physics of Plasmas (2006) 13 (013301)) Reviewed International journal

    Kajita S., Ohno N., Takamura S., Nakano T.

    Physics of Plasmas   Vol. 16 ( 2 )   2009.3

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    DOI: 10.1063/1.3076930

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  332. Prompt ignition of a unipolar arc on helium irradiated tungsten Reviewed

    S.Kajita, S.Takamura and N.Ohno

    Nuclear Fusion   Vol. 49   page: 032002(4pp)   2009.2

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    DOI: 10.1088/0029-5515/49/3/032002

  333. Development of Divertor Plasma Simulators with High Heat Flux Plasmas and Its Application to Nuclear Fusion Study Reviewed

    大野 哲靖

    IEEJ Transactions 4     page: 476 - 487   2009

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  334. Visualized blow-off from helium irradiated tungsten in response to ELM-like heat load Reviewed

    S.Kajita, N.Ohno, W.Sakaguchi, M.Takagi

    Plasma and Fusion Research   Vol. 4   page: 004(6 pages)   2009

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  335. In situ reflectivity of tungsten mirrors under helium plasma exposure Reviewed

    W.Sakaguchi, S.Kajita, N.Ohno, M.Takagi

    Journal of Nuclear Materials     page: doi:10.1016/j.jnucmat.2009.01.276   2009

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  336. Statistical analysis to the SOL plasma fluctuation in JT-60U Reviewed

    N. Asakura, N. Ohno, H. Tanaka, H. Kawashima, T. Nakano

    J.Nucl. Mater.   Vol. 390-391   page: 364-367   2009

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  337. Effects of tungsten surface conditions on carbon deposition Reviewed

    Y. Ueda, M. Fukumoto, A. Yamawaki, Y. Soga, Y. Ohtsuka, S. Brezinsek, T. Hirai, A. Kirschner, A. Kreter, A. Litnovsky, V. Philipps, A. Pospieszczyk, B. Schweer, G. Sergienko, T. Tanabe, K. Sugiyama, K. Ohya, N. Ohno and The TEXTOR team

    J.Nucl. Mater.   Vol. 390-391   page: 44-48   2009

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  338. Deuterium retention in Tungsten Oxyside under low-voltage D2+ plasma exposure Reviewed

    N.Matsunami, N.Ohno and M.Tokitani

    J.Nucl. Mater.   Vol. 390-391   page: 693-695   2009

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  339. Development of net-current free heliotron plasmas in the Large Helical Device Reviewed

    A.Komori, H.Yamada, S.Sakakibara, O.Kaneko, K.Kawahata, T.Mutoh, N.Ohyabu, S.Imagawa, K.Ida, Y.Nagayama, T.Shimozuma, K.Y.Watanabe, T.Mito, M.Kobayashi, K.Nagaoka, R.Sakamoto, N.Yoshida, S.Ohdachi, N.Ashikawa, Y.Feng, T.Fukuda, H.Igami, S.Inagaki, H.Kasahara, S.Kubo, R.Kumazawa, O.Mitarai, S.Murakami, Y.Nakamura, M.Nishiura, T.Hino, S.Masuzaki, K.Tanaka, K.Toi, A.Weller, M.Yoshinuma, Y.Narushima, N.Ohno, T.Okamura, N.Tamura, K.Saito, T.Seki, S.Sudo, H.Tanaka, T.Tokuzawa, N.Yanagi, M.Yokoyama, Y.Yoshimura, T.Akiyama, H.Chikaraishi, M.Chowdhuri, M.Emoto, N.Ezumi, H.Funaba, L.Garcia, P.Goncharov, M.Goto, K.Ichiguchi, M.Ichimura, H.Idei, T.Ido, S.Iio, K.Ikeda, M.Irie, A.Isayama, T.Ishigooka, M.Isobe, T.Ito, K.Ito, A.Iwamae, S.Hamaguchi, T.Hamajima, S.Kitajima, S.Kado, D.Kato, T.Kato, S.Kobayashi, K.Kondo, S.Masamune, Y.Matsumoto, N.Matunami, T.Minami, C.Michael, H.Miura, J.Miyazaa, N.Mizuguchi, T.Morisaki, S.Morita, G.Motojima, I.Murakami, S.Muto, K.Nagasaki, N.Nakajima, Y.Nakamura, H.Nakanishi, H.Nakano, K.Narihara, A.Nishimura, H.Nishimura, K.Nishimura, S.Nishimura, N.Nishino, T.Notake, T.Obana, K.Ogawa, Y.Oka, T.Ohishi, H.Okada, K.Okuno, K.Ono, M.Osakabe, T.Osako, T.Ozaki, B.J.Peterson, H.Sakaue, M.Sasao, S.Satake, K.Sato, M.Sato, A.Shimizu, M.Shiratani, M.Shoji, H.Sugama, C.Suzuki, Y.Suzuki, K.Takahata, H.Takahashi, Y.Takase, Y.Takeiri, H.Takenaga, S.Toda, Y.Toda, M.Tokitani, H.Tsuchiya, K.Tsumori, H.Urano, E.Veshchev, F.Watanabe, T.Watanabe, T.H.Watanabe, I.Yamada, S.Yamada, O.Yamagishi, S.Yamaguchi, S.Yoshimura, T.Yoshinaga and O.Motojima

    Nuclear Fusion   Vol. 49   page: 104015(8pp)   2009

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  340. Direct observation of cathode spot grouping using nanostructured electrode Reviewed

    S.Kajita, N.Ohno, S.Takamura, Y.Tsuji

    Physics Letters A   Vol. 373   page: 4273-4277   2009

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  341. Discharge Bifurcation of Microwave-sustained Helium Plasma Torch at Atmospheric Pressure Reviewed

    S.Takamura, M.Kando, N.Ohno

    J.Plasma Fusion Res. SERIES   Vol. 8   page: 910-913   2009

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  342. High temperature irradiation damage of carbon materials studies by laser Raman spectroscopy Reviewed

    M.Yoshida, T.Tanabe, N.Ohno, M.Yoshimi, S.Takamura

    Journal of Nuclear Materials   Vol. 386-388   page: 841-843   2009

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  343. *Development of Divertor Plasma Simulators with High Heat Flux Plasmas and its Application to Nuclear Fusion Study: A Review Reviewed

    N.Ohno, S.Kajita, M.Takagi, S.Takamura

    TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING IEEJ Trans.   Vol. 4   page: 476,487   2009

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  344. Formation and mitigation of fiberform nanostructured tungsten by helium and sub-ms laser pulse irradiations Reviewed

    S.Kajita, W.Sakaguchi and N.Ohno

    Plasma Devices and Operations   Vol. 17   page: 165,173   2009

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  345. Statistical analysis of fluctuation characteristics at high- and low-field sides in L-mode SOL plasmas of JT-60U Reviewed

    H.Tanaka, N.Ohno, N.Asakura, Y.Tsuji, H.Kawashima, S.Takamura, Y.Uesugi and the JT-60U Team

    Nuclear Fusion   Vol. 49   page: 65017   2009

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  346. *Spherical cauliflower-like carbon dust formed by interaction between deuterium plasma and graphite target and its internal structure Reviewed

    N.Ohno, M.Yoshimi, M.Tokitani, S.Takamura, K.TOkunaga, N.Yoshida

    Journal of Nuclear Materials     page: doi:10.1016/j.jnucmat.2009.01.051   2009

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  347. Statistical properties of edge plasma turbulence in the Mega-Amp Spherical Tokamak and the Large Helical Device Reviewed International coauthorship International journal

    Dewhurst J., Hnat B., Ohno N., Dendy R., Masuzaki S., Morisaki T., Komori A., Dudson B., Counsell G., Kirk A.

    35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts   Vol. 32 ( 2 ) page: 898 - 901   2008.12

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    Scopus

  348. Deuterium retention near surface of TiO<inf>2</inf> by low-voltage D <inf>2</inf> plasma discharge Reviewed International journal

    Matsunami N., Tanaka T., Ohno N., Tokitani M.

    Physica Status Solidi (C) Current Topics in Solid State Physics   Vol. 5 ( 4 ) page: 923 - 926   2008.12

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    We have investigated deuterium (D) uptake in TiO2 (rutile) films under exposure of low-energy D2+ ions and thermal release of D from TiO2 films. The amount of deuterium in the films was analysed by means of nuclear reaction analysis, D(3He, α)p. D-uptake under AC-glow discharge in D2 pressure of ∼90 Pa is compared with that under DC-discharge with well-defined energy of D 2+ ions in D2 pressure of ∼0.1 Pa. The results imply that the effective energy of D2+ ions in AC-glow discharge is much lower than the energy derived from the applied voltage. The results are also compared with those for Ti sheet exposed to low-energy D2+ ions. We find that D-release temperature from TiO2 is considerably lower than from Ti, though D-uptake in TiO2 is smaller than in Ti. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.

    DOI: 10.1002/pssc.200778343

    Scopus

  349. 11<sup>th</sup> International Workshop on Plasma Edge Theory in Fusion Devices: Preface Reviewed International coauthorship International journal

    Heikkinen J., Ohno N.

    Contributions to Plasma Physics   Vol. 48 ( 1-3 )   2008.3

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    DOI: 10.1002/ctpp.200890000

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  350. Measurement of Plasma Properties of the Atmospheric Oxy-Combustion Flame by Using Double Probe Method Reviewed

    Y.Osaka, N.Kobayashi, N.Ohno, S.Takamura, Y.Tanaka, Y.Uesugi

    Contrib. Plasma Physics   Vol. 48 ( 5-7 ) page: 485-490   2008

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  351. Intermittency and extended self-similarity in space and fusion plasma: boundary effects Reviewed

    V.P.Budaev, S.Savin, L.Zelencyi, N.Ohno, S.Takamura and E.Amata

    Plasma Physics and Controlled Fusion   Vol. 50   page: 074014(20pp)   2008

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  352. Extended self-similarity of intermittent turbulencein edge magnetized plasmas Reviewed

    V.P. Budaev, N. Ohno, S.Takamura, S. Masuzaki, A. Komori, T. Morisaki

    Nuclear Fusion   Vol. 48   page: 24014   2008

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  353. Deuterium retention near surface of TiO2 by low-voltage D2 plasma discharge Reviewed

    N.Matsunami, T.Tanaka, N.Ohno and M.Tokitani

    Phys. Stat. Sol.(c)   Vol. 5 ( 4 ) page: 923-926   2008

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  354. ELM propagation in the low- and high- filed-side Scrape-off Layer of the JT-60U tokamak Reviewed

    N.Asakura, H.Kawashima, N.Ohno, G.Matsunaga, T.Nakano and N.Oyama

    Journal of Physics; Conference Series   Vol. 123   page: 012009(11pp)   2008

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  355. Statistical properties of edge plasma turbulence in the Large Helical Device Reviewed

    J.M.Dewhurst, B.Hnat, N.Ohno, R.O.Dendy, S.Masuzaki, T.Morisaki and A.Komori

    Plasma Physics and Controlled Fusion   Vol. 50   page: 095013(15pp)   2008

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  356. Fluctuating Helium Emission in Optically Thick Divertor Plasmas Reviewed

    F. B. Rosmej, N. Ohno, S. Takamura, S. Kajita

    Contributions to Plasma Physics   Vol. 48   page: 243-248   2008

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  357. Numerical Modeling of Behavior of Dust Made of Different Materials in Plasmas Reviewed

    Y. Tanaka, A. Yu. Pigarov, R. D. Smirnov, S. I. Krasheninnikov, N. Ohno, Y. Uesugi

    Contributions to Plasma Physics   Vol. 48   page: 295-299   2008

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  358. Extended Self-Similarity in Edge Plasma Turbulence of Fusion Devices Reviewed

    V. P. Budaev, N. Ohno, S. Takamura, S. Masuzaki, A. Komori, T. Morisaki

    Contributions to Plasma Physics   Vol. 48   page: 42-47   2008

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  359. Plasma Rotation Measurements by Passive Spectroscopic Method in the HYBTOK-II using a Dynamic Ergodic Divertor Reviewed

    Y.Hasebe, M.Okamoto, S.Kajita, N.Ohno and S.Takamura

    Plasma and Fusion Research   Vol. 3   page: S1015   2008

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  360. ELM propagation in the low- and high-field-side scrape-off layer of the JT-60U tokamak Reviewed International journal

    Asakura N., Kawashima H., Ohno N., Matsunaga G., Nakano T., Oyama N.

    Journal of Physics: Conference Series   Vol. 123   2008

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    In JT-60U, the filament structure of Edge Localized Modes (ELMs) is measured at three poloidal locations, and their temporal evolution is investigated at the inner (high magnetic-field-side, HFS) SOL as well as outer (low magnetic-field-side, LFS) SOL. At the inner SOL, filament structure with 7-8 temporal multi-peaks in ion-saturation probe signals and other diagnostics is, for the first time, measured close to the sepatratrix. The delay of the first peak after the start of MHD activity is faster than the characteristic time of the parallel convection from the outer midplane, and the Mach numbers of the plasma parallel flow reach ion sonic levels. These results show that ELM filaments extend from the outer to the inner plasma edge, and that a part of the filaments are ejected into the inner SOL. The toroidal mode numbers (n) and poloidal width of the filaments (δz) are evaluated from the interval of the multi-peaks and duration of each peak, yielding n ∼ 18-44 and δz ∼ 2-6 cm on the HFS SOL, while n and δz are comparable on the LFS SOL. After the multi-peaks appear, flow reversal of the SOL plasma toward is observed over a wide region of the inner SOL. © 2008 IOP Publishing Ltd.

    DOI: 10.1088/1742-6596/123/1/012009

    Scopus

  361. Plasma-assisted laser ablation of tungsten: Reduction in ablation power threshold due to bursting of holes/bubbles Reviewed International journal

    Kajita S., Ohno N., Takamura S., Sakaguchi W., Nishijima D.

    Applied Physics Letters   Vol. 91 ( 26 )   2007.12

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    Nanosecond laser ablation of tungsten (W) exposed to helium plasma is investigated using optical emission spectroscopy. Submicrometer-sized holes/bubbles are formed on the surface of W when it was exposed to the helium plasma at a sufficiently high temperature (1500-1600 K). The emissions from a virgin W (before the helium plasma irradiation) cannot be detected when the fluence is <1 J cm2; however, the threshold fluence for the detection of neutral W emission after it was exposed to the helium plasma is ∼0.2 J cm2. The physical mechanism of laser-induced bursting of holes/bubbles is proposed for achieving a significant reduction in ablation power threshold. © 2007 American Institute of Physics.

    DOI: 10.1063/1.2824873

    Scopus

  362. Effect of cross-field transport on H<sup>-</sup> density profile in magnetized plasmas: Comparison between measurement and simulation Reviewed International journal

    Kajita S., Kado S., Ohno N., Takamura S., Kurihara K., Kuwahara Y.

    Physics of Plasmas   Vol. 14 ( 10 )   2007.11

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    The radial density profile of negative hydrogen ions in magnetized plasma is investigated in the divertor simulator MAP (Material and plasma)-II [S. Kado et al., J. Plasma Fusion Res. 71, 810 (2005)] by measurement and numerical simulation. The laser photodetachment method is used to evaluate the H - density by considering the influence of the magnetic field. The density of H- has a hollow profile and exhibits a peak in the peripheral region, though the electron density and temperature exhibit a peak at the center of the plasma column. The density profile of H- does not agree with the calculation result obtained from, the rate equation, in which the local production and extinction rates are balanced, under the present experimental condition. To understand the behavior of negative ions, their trajectories are calculated by numerically solving the equation of motion by considering the effect of collisions. The negative ion density profile calculated from the particle simulation agrees well with the measured negative ion density profile. It is shown that the cross-field H- transport due to the radial electric field with the assistance of the elastic collisions plays an important role in enhancing the negative ion density in the peripheral region. © 2007 American Institute of Physics.

    DOI: 10.1063/1.2789559

    Scopus

  363. Sub-ms Laser Pulse Irradiation on Tungsten Target Damaged by Exposure to Helium Plasma Reviewed

    S.Kajita, S.Takamura, N.Ohno, D.Nishijima, H.Iwakiri, N.Yoshida

    Nuclear Fusion   Vol. 47   page: 1358 - 1366   2007.9

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    DOI: 10.1088/0029-5515/47/9/038

  364. Integrated view of disruption dynamics on internal electromagnetic and plasma structures in the small tokamak HYBTOK-II Reviewed

    M. Okamoto, S. Takamura, N. Ohno, S. Kajita, Y. Kikuchi, Y. Uesugi, T. Ozeki, Y. Kawano, M. Sugihara

    Nuclear Fusion   Vol. 47   page: 1106 - 1111   2007.8

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    DOI: 10.1088/0029-5515/47/9/006

  365. Surface modification at tungsten and tungsten coated graphite due to low energy and high fluence plasma and laser pulse irradiation Reviewed International journal

    Ohno N., Kajita S., Nishijima Dai, Takamura S.

    JOURNAL OF NUCLEAR MATERIALS   Vol. 363   page: 1153 - 1159   2007.6

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    DOI: 10.1016/j.jnucmat.2007.01.148

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  366. Modeling of Dust-particle Behavior for Different Materials in Plasmas Reviewed

    Y.Tanaka, A.Yu.Pigarov, R.D.Smirnov, S.I.Krasheninnikov, N.Ohno, Y.Uesugi

    Physics of Plasmas   Vol. 14   page: 52504   2007.5

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    DOI: 10.1063/1.2722274

  367. Systematic Analysis of Current Decay Time during Disruption in HYBTOK-II Tokamak Reviewed

    M.Okamoto, N.Ohno, S.Takamura

    Plasma and Fusion Research   Vol. 3   page: 6   2007

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  368. Effect of Cross-field Transport on H-Density Profile in Magnetized Plasmas: Comparison Between Measurement and Simulation Reviewed

    S.Kajita, S.Kado, N.Ohno, K.Kurihara, Y.Kuwahara, S.Takamura

    Physics of Plasmas   Vol. 14   page: 103503   2007

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  369. Plasma-assisted Laser Ablaion of Tungsten: Reduction in Ablation Power Threshold Due to Bursting of Holes/Bubbles Reviewed

    S.Kajita, N.Ohno, S.Takamura, W.Sakaguchi, D.Nishijima

    Applied Physics Letters   Vol. 9191   page: 261501   2007

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  370. Development of Tungsten Materials for Plasma Facing Components in Japan Reviewed

    Y.Ueda, N.Ohno, S.Kajita, H.Kurishita, H.Iwakiri et al

    Fusion Science and Technology   Vol. 52   page: 513-520   2007

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  371. Overview of JT-60U results for the Development of a Steady-state Advanced Tokamak Scenario Reviewed

    H.Takenaga, the JT-60 Team

    Nuclear Fusion   Vol. 47   page: S563-S578   2007

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  372. Structural Bifurcation of Microwave Helium Jet Discharge at Atmospheric Pressure Reviewed

    S.TAKAMURA, M.KITOH, T.SOGA, H.TAKASHIMA, Y.NISHINO, S.HAYAKAWA, Y.BAN, T.YUHKI, M.KANDO, N.OHNO

    Plasma and Fusion Research   Vol. 3   page: 12   2007

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  373. High density plasma generation by RF ohmic discharge in toroidal divertor simulator NAGDIS-T Reviewed

    M. Nagase, H. Masuda, N. Ohno, S. Takamura and M. Takagi

    Journal of Nuclear Materials   Vol. 363-365   page: 611-615   2007

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  374. Extended Steady-state and High-beta Regimes of Net-current Free Heliotron Plasmas in the Large Helical Device Reviewed

    O.Motojima, H.Yamada, A.Komori, N.Ohyabu, T.Mutoh, O.Kaneko, K.Kawahata, T.Mito, K.Ida, S.Imagawa, Y.Nagayama, T.Shimozuma, K.Y.Watanabe, S.Masuzaki, J.Miyazawa, T.Morisaki, S.Morita, S.Ohdachi, N.Ohno, K.Saito, S.Sakakibara, Y.Takeiri, N.Tamura, K.Toi, M.Tokitani, M.Yokoyama, M.Yoshinuma, K.Ikeda, A.Isayama, K.Ishii S.Kubo, S.Murakami, K.Nagasaki, T.Sekim K.Takahata, H.Takenaga and the LHD Experimental Group

    Nuclear Fusion   Vol. 47   page: S668-S676   2007

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  375. Plasma-surface Interaction, Scrape-off Layer and Divertor Physics: Implications for ITER Reviewed

    B.Lipschultz, X.Bonnin, G.Counsell, A.Kallenbach, A.Kukushkin, K.Krieger, A.Leonard, A.Loarte, .Neu, R.A.Pitts, T.Rognlien, J.Roth, C.Skinner, J.L.Terry, E.Tsitrone, D.Whyte, S.Zweben, N.Asakura, D.Coster, R.Doerner, R.Dux, G.hendrih, A.Herrmann, J.Hu, S.Krasheninnikov, G.Kirnev, A.Kreter, V.Kurnaev, B.LaBombard, S.Lisgo, T.Nakano, N.Ohno, H.D.Pacher, J.Paley, Y.Pan, G.Pautasso, V.Philipps, V.Rohde, D.Rudakov, P.Stangeby, S.Takamura, T.Tanabe, Y.Yang, S.Zhu

    Nuclear Fusion   Vol. 47   page: 1189-1205   2007

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  376. High Density Plasma Generation by RF Ohmic Discharge in Toroidal Divertor Simulator NAGDIS-T Reviewed

    M.Nagase, H.Masuda, N.Ohno, S.Takamura, M.Takagi

    J. Nucl. Mater.   Vol. 363-365   page: 611-615   2007

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  377. Dynamic Interaction between Disruptive Plasma and Wall in the Small Tokamak HYBTOK-II Reviewed

    M.Okamoto, T.Yamada, T.Hiraishi, Y.Kikuchi, N.Ohno, S.Takamura

    J. Nucl. Mater.   Vol. 363-365   page: 1076-1080   2007

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  378. Alleviation of Damaged Tungsten Having Helium Holes/Bubbles by Use of Transient Heat Load Reviewed

    S.Kajita, S.Takamura, N.Ohno, T.Nishimoto

    Plasma Fusion Research   Vol. 2   page: 9   2007

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  379. Alleviation of Helium Holes/Bubbles on Tungsten Surface by Use of Transient Heat Load Reviewed International journal

    KAJITA Shin, TAKAMURA Shuichi, OHNO Noriyasu, NISHIMOTO Tentaro

    Plasma and Fusion Research   ( 2 ) page: 9 - 9   2007

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    The alleviation effect of transient heat load on helium holes/bubbles has been demonstrated using ruby laser pulses for the transient heat source in the divertor simulator NAGDIS-II. It is shown that the holes and bubbles disappeared following the irradiation of the ruby laser pulses, while the surface roughness was significantly enhanced by the irradiation of the Nd:YAG laser pulses. Based on the numerically calculated temperature in the specimen, the physical mechanism causing this difference is discussed particularly in terms of pulse width (0.6 ms for ruby laser without a Q-switch and 5 ns for Nd:YAG laser with a Q-switch).

    DOI: 10.1585/pfr.2.009

  380. Plasma response on penetration of external rotating helical magnetic field in HYBTOK-II tokamak edge plasma Reviewed International journal

    Budaev V.P., Pankratov I.M., Takamura S., Ohno N., Kajita S., Takagi M., Matsuno H., Okamoto M., Hosoi S., Hasebe Y., Yamada T., Omelchenko A.Y., Olshansky V.V.

    33rd EPS Conference on Plasma Physics 2006, EPS 2006   Vol. 2   page: 1548 - 1551   2006.12

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  381. Intermittency in laboratory and space plasmas: Comparative study of multifractal statistics Reviewed International coauthorship International journal

    Budaev V., Savin S., Zelenyi L., Takamura S., Ohno N., Shevyrev N.

    33rd EPS Conference on Plasma Physics 2006, EPS 2006   Vol. 1   page: 344 - 347   2006.12

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  382. Reduction of laser power threshold for melting tungsten due to subsurface helium holes Reviewed International journal

    Kajita Shin, Nishijima Dai, Ohno Noriyasu, Takamura Shuichi

    JOURNAL OF APPLIED PHYSICS   Vol. 100 ( 10 )   2006.11

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    DOI: 10.1063/1.2387151

    Web of Science

  383. Modification of the damping rate of the oscillations of a dust particle levitating in a plasma due to the delayed charging effect Reviewed International coauthorship International journal

    Pustylnik M.Y., Ohno N., Takamura S., Smirnov R.

    Physical Review E - Statistical, Nonlinear, and Soft Matter Physics   Vol. 74 ( 4 )   2006.10

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    Dependence of the damping rate of the oscillations of the dust particles levitating in the sheath on the plasma parameters is investigated both theoretically and experimentally. Significant deviations of the damping rate from the values predicted by the Epstein formula are found in the experiment. The delayed charging effect is applied for the theoretical explanation of the experimental results. Qualitative agreement between the theoretical and experimental data is obtained. © 2006 The American Physical Society.

    DOI: 10.1103/PhysRevE.74.046402

    Scopus

  384. Superdiffusion and multifractal statistics of edge plasma turbulence in fusion devices Reviewed International coauthorship International journal

    Budaev V.P., Takamura S., Ohno N., Masuzaki S.

    Nuclear Fusion   Vol. 46 ( 4 )   2006.4

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    The edge plasma turbulence in the T-10 tokamak, the HYBTOK-II tokamak, the linear machine NAGDIS-II and the Large Helical Device have been studied. The fluctuations in the plasma density have been analysed in terms of the multifractal formalism revisited with wavelets. In most of the cases considered, the edge density fluctuations demonstrate multifractal statistics, i.e. the scaling behaviour of the absolute moments is described by a convex function with non-trivial self-similarity properties. The multifractality factor defined in the multiplicative cascade model is a relevant parameter for characterizing the edge plasma turbulence. The multiplicative cascade process has a 'coarse' time scale T ∼ 50-200 ms iterating towards finer scales. This time scale is referred to as an integral correlation scale. The self-similarity parameters have been observed to depend on the edge plasma condition. The correlation and transport properties have been analysed regarding the multifractality parameter. The diffusion transport coefficient in an edge plasma is not a trivial function of multifractality parameters. © 2006 IAEA, Vienna.

    DOI: 10.1088/0029-5515/46/4/S10

    Scopus

  385. Comparison of HeI Line Intensity Ratio Method and Electrostatic Probe for Electron Density and Temperature Measurements in NAGDIS-II Reviewed

    S.Kajita, N.Ohno, S.Takamura, T.Nakano

    Physics of Plasmas   Vol. 13   page: 013301(9pages)   2006.1

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    DOI: 10.1063/1.2164461

  386. Numerical Analysis on Generation of High Density Plasmas in the Toroidal Device NAGDIS-T for SOL and Divertor Simulation Studies Reviewed

    M.Nagase, S.Takamura, N.Ohno, H.Masuda, H.Kitahara, M.Takagi

    Contrib. Plasma Physics   Vol. 46   page: 557-562   2006

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  387. Charactersitics of rf inductive plasma in oxy-combustion

    Yugo Osaka, Noriyuki Kobayashi, M.A.Razzak, Noriyasu Ohno, Shuichi Takamura

    The 4th International Conference on Combustion, Incineration/Pyrolysis and Emission Control, September 26-29, 2006, Kyoto, Japan   Vol. 1   2006

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  388. Fundamental research on plasma-assisted combustion by applying rf power

    Yugo Osaka, Noriyuki Kobayashi, M.A.Razzak, Noriyasu Ohno, Shuichi Takamura

    11th Asian Pacific Confederation of Chemical Engineering Congress, August 27-30, 2006 Kuala Lumpur, Malaysia   Vol. 1   2006

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  389. Dust Formation and Transport in the Divertor Plasma Simulators

    N.Ohno, M.Miyoshi, T.Yamada, M.Pustylnik, S.Kajita, S.Takamura

    7th Workshop ont Fine Particle Plasma, NIFS, oki, Japan December, 15-16, 2006(招待講演)   Vol. 1   2006

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  390. Two-dimensional measurement of plasma dynamics with an ICCD fast camera based on HeI line intensity ratio method

    N.Yamamoto, K.Miyamoto, K.Kitagawa, S.Kajita, M.Okamoto, N.Ohno

    16th International Toki Conference on Advanced Imaging and Plasma Diagnostics, Toki, Gifu, Japan, Dec. 5-8, 2006     page: 6-15   2006

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  391. Imaging of tungsten impurity ejected from damaged material due to transient heat load

    S.Kajita, N.Ohno, S.Takamura

    16th International Toki Conference on Advanced Imaging and Plasma Diagnostics, Toki, Gifu, Japan, Dec. 5-8, 2006     page: 4-01   2006

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  392. ELM Propagation and Fluctuations Characteristics in H- and L-mode SOL Plasmas on JT-60U

    N.Asakura, N.Ohno, H.Kawashima, H.Miyoshi, G.Matsunaga, N.Oyama, S.Takamura, Y.Uesugi, M.Takechi, T.Nakano, H.Kubo

    21st IAEA Fusion Energy Conference, Chengdu, China, Oct. 16-21, 2006     page: EX/9-2   2006

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  393. Integrated View of Disruption Dynamics on Internal Electromagnetic and Plasma Structures in the small tokamak HYBTOK-II

    M.Okamoto, S.Takamura,N.Ohno, S.Kajita, Y.Kikuchi, Y.Uesugi, T.Ozeki, Y.Kawano, M.Sugihara

    21st IAEA Fusion Energy Conference, Chengdu, China, Oct.16-21,2006     page: EX/P8-14   2006

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  394. Super Dense Core Plasma due to Internal Diffusion Barrier in LHD

    N.Ohyabu, .Morisaki, S.Masuzaki, R.Sakamoto, M.Kobayashi, J.Miyazawa, M.SHoji, T.Akiyama, N.Ashikawa, M.Emoto, H.Funaba, P.Goncharov, M.Goto, J.H.Harris, Y.Hirooka, K.Ichiguchi, T.Ido, K.Itoh, H.Igami, K.Ikeda, S.Inagaki, H.KAsahara, T.Kobuchi, S.Kubo, R.Kumazawa, S.Morita, S.Muto, K.Nagaoka, N.Nakajima, Y.Nakamura, H.Nakanishi, K.Nariharam Y.Narushima, M.Nishiura, T.Notake, S.Ohdachi, N.Ohno, Y.Oka, M.Osakabe, T.Ozaki, B.J.Peterson, K.Saito, S.Sakakibara, R.Sanchez, H.Sanuki, K.Sato, T.Seki, A.SHimizu, H.SUgama, C.Suzuki, Y.Suzuki, Y.Takeiri, K.Tanaka, N.Tamura, K.TOi, T.Tokuzawa, S.TOda, K.Tsumori, I.Yamada, O.Yamagishi, M.Yokoyama, S.Yoshimura, Y.Yoshimura, M.Yoshinuma, K.Ida, T.Shimozuma, K.Y.Watanabe, Y.Nagayama, O.Kaneko, T.Mutoh, K.Kawahata, H.Yamada, A.Komori, S.Sudo, O.Motojima

    21st IAEA Fusion Energy Conference, Chengdu, China, Oct.16-21, 2006     page: EX/8-1   2006

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  395. Bursty Fluctuation Characterisitics in SOL/Divertor Plasmas of Large Helical Device

    N.Ohno, S.Masuzzaki, V.P.Budaev, H.Miyoshi, S.Takamura, T.Morisaki, N.Ohyabu, A.Komori

    21st IAEA Fusion Energy Conference, Chengdu, China, Oct 16-21, 2006     page: EX/P4-20   2006

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  396. Extended Steady-State and High=beta Regimes of Net-Current Free Heliotron Plasmas in the Large Helical Device

    O.Motojima, H.Yamada, A.Komori, O.Kaneko, K.Kawahata, T.Mito, T.Mutoh, N.Ohyabu K.Ida, S.Imagawa, Y.Nagayama, T.Shimozuma, K.Y.Watanabe, S.Masuzakim J.Miyazawa, S.Morita, S.Ohdachi, N.Ohno, K.Saito, S.Sakakibara, Y.Takeiri, N.Tamura, K.Toi, M.Tokitani, M.Yokoyama, M.Yoshinuma, K.Ikeda, A.Isayama, K.Ishii, S.Kubo, S.Murakami, K.Nagasaki, T.Seki, K.Takahata, H.Takenaga, LHD Experimental Group

    21st IAEA Fusion Energy Conference, Chengdu, China, Oct.16-21. 2006     page: OV/2-1   2006

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  397. Plasma-surface interaction, scrape-off layer and divertor physics: Implications for ITER

    B.Lipschultz, X.Bonnin, A.Kukushkin, A.Leonard, J.Roth, E.Tsitrone, D.Whyte, N.Asakura, D.Coster, G.Counsell, R.Doerner, R.Dux, G.Federici, M.Fenstermacher, W.Fundamenski, P.Ghendrih, A.Hermann, J.Hu, A.Kallenbach, S.Kasheninnikov, K.Krieger, G.Krienev, A.Kreter, B.Kurnaev, B.LaBombard, S.Lisgom A.Loarte, T.Nakano, R.Neu, N.Ohno, H.Pacher, J.Paley, Y.Pan, G.Pautasso, V.Philipps, R.Pitts, V.Riccardo, V.Rohde, D.Rudakov, P.Stangeb, S.Takamura, T.Tanabe, Y.Yang, S.Zhu

    21st IAEA Fusion Energy Confernece, Chnegdu, China, Oct.16-21, 2006     page: IT/1-4   2006

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  398. Effects of transient heat load on tungsten surface having sub-micron helium holes and bubbles

    S.Kajita, N.Ohno, S.Takamura

    33rd EPS Conference on Plasma Phys. Rome, 19-23 June 2006 ECA   Vol. 30I   page: 4.137   2006

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  399. Plasma Response on Penetraton of External Rotating Helical Magnetic Field in HYBTOK-II Tokamak Edge Plasma

    V.P.Budaev, I.M.Pankratov, S.Takamura, N.Ohno, S.Kajita, M.Takagi, H.Matsuno, M.Okamoto, S.Hosoi, Y.Hasebe, T.Yamada, A.Ya.Omelchenko, V.V.Olshansky

    33rd EPS Conference on Plasma Phys. Rome, 19-23 June 2006 ECA   Vol. 30I   page: 4.109   2006

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  400. Intermittency in laboratory and space plasma: comparative study of multifractal statistics

    V.P.Budaev, S.P.Savin, L.M.Zelenyi, S.Takamura, N.Ohno, N.Shevyrev

    33rd EPS Conference of Plasma Phys. Rome, 19-23 June 2006 ECA   Vol. 30I   page: 1.064   2006

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  401. Investigation and Application of the Line Intensity Ratio Method for the Measurement of Electron Density and Temperature

    S.Kajita, T.Hiraishi, N.Ohno, M.Okamoto, T.Nakano, S.Takamura

    13th International Congress on Plasma Physics, Kiev, May 22-26, 2006     page: A151p   2006

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  402. Dynamic Interaction between Disruptive Plasma and Wakk in the Small Tokamak HYBTOK-II

    M.Okamoto, T.Yamada, T.Hiraishi, Y.Kikuchi, N.Ohno, S.Takamura

    17th PSI Conference, Heifei, China, May 22-26, 2006     page: 2-15   2006

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  403. High Density Plasma Generation by RF Ohmic Discharge in Toroidal Divertor Simulator NAGDIS-T

    M.Nagase, H.Matsuda, N.Ohno, S.Takamura, M.Takagi

    17th PSI Conference, Heifei, China, May 22-26, 2006     page: 3-16   2006

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  404. Carbon Dust Formation and Chemical Erosion Process in High Density Deuterium Plasmas in the Linear Divertor Simulator

    Y.Miyachi, M.Yoshimi, N.Ohno, S.Takamura

    17th PSI Conference, Heifei, China, May 22-26, 2006     page: 2-50   2006

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  405. Fundamental study on the control of oxy-combustion by rf non-equilibrium plasma Reviewed

    Y.Osaka, N.Kobayashi, M.A.Razzak, N.Ohno, S.Takamura

    Fluid and heat engineering research   Vol. 41   page: 5-12   2006

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  406. Formation of Nanostructured Tungsten with Arborescent Shape due to Helium Plasma Irradiation Reviewed

    S.Takamura, N.Ohno, D.Nishijima, S.Kajita

    Plasma Fusion Res.   Vol. 1   page: 051(2pages)   2006

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  407. Reduction of Laser Threshold for Melting Tungsten due to Subsurface Helium Holes Reviewed

    S.Kajita, D.Nishijima, N.Ohno, S.Takamura

    J. Appl. Phys.   Vol. 100   page: 103304(10 pages)   2006

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  408. Modification of the Damping Rate of the Oscillation of a Dust Particle levitating in a Plasma Due to the Delayed Charging Effect Reviewed

    M.Y.Pustylnik, N.Ohno, S.Takamura, R.Smirnov

    Phys. Rev. E   Vol. 74   page: 046402(9pages)   2006

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  409. Analysis on Relation between Magnetic Structure and Bursty Fluctuation in SOL/Divertor Plasma of LHD Reviewed

    N.Ohno, S.Masuzaki, H.Miyoshi, S.Takamura, V.P.Budaev, T.Morisaki, N.Ohyabu, A.Komori

    Contrib. Plasma Physics   Vol. 46   page: 692-697   2006

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  410. Control of Energetic Electron Component in a Magnetically Confined Diffusion Ar Plasma Reviewed

    M.Pustylnik, N.Ohno, S.Takamura

    Japanese Journal of Applied Physics   Vol. 45 ( 2A ) page: 926-932   2006

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  411. Validity of Electron Temperature Measurement by Using Boltzmann Plot Method in Radio Freauency Inductive Discharge in the Atmospheric Pressure Range Reviewed

    N.Ohno, M.Razzak, H.Ukai, S.Takamura, Y.Uesugi

    Plasma Fusion Res.   Vol. 1   page: 028(9pages)   2006

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  412. The Effect of the Rotating Helical Fields on the Plasma Edge in the HYBTOK-II Tokamak Reviewed

    V.P.Budaev, I.M.Pankratov, S.Takamura, N.Ohno, M.Takagi, H.Matsuno, M.Okamoto, S.K.Saha

    Nucl. Fusion   Vol. 46   page: S175-S180   2006

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  413. Fast Ignition and Mode Transition of Radio Frequency Induction Plasmas at Atmospheric Pressure using tungsten Pin Electrode Array Reviewed

    M.Razzak, S.Takamura, N.Ohno

    Plasma Fusion Res.   Vol. 1   page: 006/Letters(3pages)   2006

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  414. Assessment of Meander-Line Antenna covered with Dielectric Material for LHW Heating Reviewed

    H.Matsuno, S.Takamura, S.Hosoi, N.Ohno

    Plasma & Fusion Res.   Vol. 1   page: 0009(6pages)   2006

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  415. Fast Initiation and Mode Transition of Radio Frequency Induction Plasmas at Atmospheric Pressure Using Tungsten Pin Electrodes Array Reviewed International journal

    RAZZAK M. Abdur, TAKAMURA Shuichi, OHNO Noriyasu

    Plasma and Fusion Research   ( 1 ) page: 6 - 6   2006

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    The effects of using an array of tungsten pin electrodes on the ignition dynamics of radio frequency (rf) discharges generated by inductively coupled plasma (ICP) technique at atmospheric pressure are investigated experimentally. The experimental observations reveal that the array of tungsten pin electrodes successfully enhance the initial discharges maintained by the strong electrostatic field with stable and fast ignition, which enables us to sustain efficient rf induction plasmas at atmospheric pressure range.

    DOI: 10.1585/pfr.1.006

  416. Validity of Electron Temperature Measurement by Using Boltzmann Plot Method in Radio Frequency Inductive Discharge in the Atmospheric Pressure Range Reviewed International journal

    OHNO Noriyasu, RAZZAK M. Abdur, UKAI Hiroshi, TAKAMURA Shuichi, UESUGI Yoshihiko

    Plasma and Fusion Research   ( 1 ) page: 28 - 28   2006

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    The validity of electron temperature measurement using the Boltzmann plot method was investigated in a radio frequency (rf) inductive discharge in the atmospheric pressure range. Since the Boltzmann plot method requires local thermal equilibrium (LTE), the parameter regions of electron temperature and electron density, in which the Boltzmann plot method is applicable, were analyzed in terms of a comparison of the spontaneous emission and collisional excitation to the excited states. It is observed that in our rf-inductive plasma near the atmospheric pressure range the Boltzmann plot method does not provide an exact measurement of electron temperature because of relatively low electron density, which does not satisfy the calculation criteria. An alternative method employing a combination of the Stark broadening measurement and the Saha-Boltzmann equation was demonstrated to more accurately determine the plasma parameters (electron temperature and electron density).

    DOI: 10.1585/pfr.1.028

  417. Design of a novel T-lclimmittance conversion circuit for dynamic and non-linear loads Reviewed International coauthorship International journal

    Razzak M.A., Takamura S., Ohno N., Uesugi Y.

    Proceedings of 4th International Conference on Electrical and Computer Engineering, ICECE 2006     page: 13 - 16   2006

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    In recent years, the immittance conversion topology [1] has become attractive as a novel power conversion strategy because of its features that a constant voltage source is converted to a constant current source and vice versa. However, the design of an ideal immittance circuit in the high-power (∼kW) and high-frequency (∼MHz) range is practically very important, especially when apply to a dynamic and non-linear load such as induction plasma. In this article, the design and development of an ideal T-LCL immittance circuit is reported. The performance of the designed immittance circuit is analysed by using a time-varying inductive plasma load.

    DOI: 10.1109/ICECE.2006.355278

    Scopus

  418. Optimum generation of high heat flux toroidal plasmas by RF ohmic discharge Reviewed International journal

    Masuda H., Kitahara H., Nagase M., Ohno N., Takamura S., Takagi M.

    32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts   Vol. 3   page: 1946 - 1949   2005.12

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    We have developed a new toroidal divertor plasma simulator, NAGDIS-T (NAGoya DIvertor plasma Simulator with Toroidal magnetic configuration). Plasma is generated by RF Joule discharge. In order to obtain high density plasmas relevant to divertor plasmas in fusion devices, we investigate the optimum condition of RF Joule discharge by varying gas pressure and driving frequency. The experimental result shows that the optimum condition strongly depends on these parameters. Copyright © (2005) by the European Physical Society (EPS).

    Scopus

  419. High-Z Dust Generation on Tungsten Surfaces due to Synergetic Erosion of Deuterium/Helium Plasma Exposures Reviewed

    西島 大, 天野 浩嗣, 大野 哲靖, 吉田 直亮, 高村 秀一

    プラズマ・核融合学会誌 = Journal of plasma and fusion research   Vol. 81 ( 9 ) page: 703 - 707   2005.9

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    Low-energy and high-flux plasma exposures on tungsten surfaces result in blister/hole formation. Subsequent He plasma exposure at 2,000 K on the blister-rich surface forms a hole structure on the surface, including the blister surface, and some blisters collapse due to recrystallization and bubble formation on the blister skin. Grain ejections were observed after deuterium plasma exposure at 550 K on a W surface on which a hole structure had formed due to He pre-exposure at 1,600 K.

    DOI: 10.1585/jspf.81.703

  420. Efficient Radio Frequency Inductive Discharges in Near Atmospheric Pressure Using Immittance Conversion Topology Reviewed

    Razzak M. Abdur, 高村 秀一, 上杉 喜彦, 大野 哲靖

    プラズマ・核融合学会誌 = Journal of plasma and fusion research   Vol. 81 ( 3 ) page: 204 - 211   2005.3

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    A radio frequency (rf) inductive discharge in atmospheric pressure range requires high voltage in the initial startup phase and high power during the steady state sustainment phase. It is, therefore, necessary to inject high rf power into the plasma ensuring the maximum use of the power source, especially where the rf power is limited. In order to inject the maximum possible rf power into the plasma with a moderate rf power source of few kilowatts range, we employ the immittance conversion topology by converting a constant voltage source into a constant current source to generate efficient rf discharge by inductively coupled plasma (ICP) technique at a gas pressure with up to one atmosphere in argon. A novel T-LCL immittance circuit is designed for constant-current high-power operation, which is practically very important in the high-frequency range, to provide high effective rf power to the plasma. The immittance conversion system combines the static induction transistor (SIT)-based radio frequency (rf) high-power inverter circuit and the immittance conversion elements including the rf induction coil. The basic properties of the immittance circuit are studied by numerical analysis and verified the results by experimental measurements with the inductive plasma as a load at a relatively high rf power of about 4 kW. The performances of the immittance circuit are also evaluated and compared with that of the conventional series resonance circuit in high-pressure induction plasma generation. The experimental results reveal that the immittance conversion circuit confirms injecting higher effective rf power into the plasma as much as three times than that of the series resonance circuit under the same operating conditions and same dc supply voltage to the inverter, thereby enhancing the plasma heating efficiency to generate efficient rf inductive discharges.

    DOI: 10.1585/jspf.81.204

  421. Characteristic changes of deuterium retention on tungsten surfaces due to low-energy helium plasma pre-exposure Reviewed

    Nishijima D, Sugimoto T, Iwakiri H, Ye MY, Ohno N, Yoshida N, Takamura S

    JOURNAL OF NUCLEAR MATERIALS   Vol. 337 ( 1-3 ) page: 927 - 931   2005.3

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    DOI: 10.1016/j.jnucmat.2004.10.011

    Web of Science

  422. Hydrogen Blister Formation on Cold-Worked Tungsten with Layered Structure Reviewed

    D.Nishijima, T.Sugimoto, M.Ye, N.Ohno, S.Takamura

    Jpn. J. Appl. Phys.   Vol. 44 ( 1A ) page: 380-382   2005

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  423. Further Roughing of Tungsten Surface due to Transient Heat Load by Laser Irradiation during Helium Plasma Exposure Reviewed

    S.Kajita, D.Nishijima, N.Ohno, S.Takamura

    J. Plasma Fusion Res.   Vol. 81   page: 745-746   2005

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  424. High-Z Dust Generation on Tungsten Surface due to Synergetic Erosion of Deuterium/Helium Plasma Exposure Reviewed

    D.Nishijima, K.Amano, N.Ohno, N.Yoshida, S.Takamura

    J. Plasma Fusion Res.   Vol. 81   page: 703-707   2005

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  425. Suppression of Blister Formation and Deuterium Retention on Tungsten Surface due to Mechanical Polishing and Helium Pre-exposure Reviewed

    D.Nishijima, H.Iwakiri, K.Amano, M.Y.Ye, N.Ohno, K.Tokunaga, N.Yoshida, S.Takamura

    Nucl. Fusion   Vol. 45   page: 669-674   2005

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  426. Efficient Radio Frequency Inductive Discharge in Hear Atmospheric Pressure Using Imittance Conversion Topology Reviewed

    M.A.Razzak, S.Takamura, Y.Uesugi, N.Ohno

    J. Plasma Fusion Res.   Vol. 81 ( 3 ) page: 204-211   2005

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  427. Characterstic changes of deuterium rentention on tungsten surfaces due to low-energy helium plasma pre-exposure Reviewed

    D.Nishijima, T.Sugimoto, H.Iwakiri, M.Y.Ye, N.Ohno, N.Yoshida, S.Takamura

    Journal of Nuclear Materials   Vol. 337-339   page: 927-931   2005

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  428. Carbon dust formation from re-deposited layers in high-density hydrogen/helium plasmas in the NAGDIS-II device Reviewed

    N.Ohno, Y.Kobayashi, T.Sugimoto, S.Takamura

    Journal of Nuclear Materials   Vol. 337-339   page: 35-39   2005

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  429. Neutral helium line emission for edge plasma conditions Reviewed

    F.B.Rosmej, R.Stamm, S.Fritzsche, H.Capes, M.Koubiti, Y.Marandet, V.S.Lisitsa, N.Ohno, S.Takamura, D.Nishijima

    Journal of Nuclear Materials   Vol. 337-339   page: 1101-1105   2005

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  430. Formation mechanism of bubbles and holes on tungsten surface with low-energy and high-flux helium plasma irradiation in NAGDIS-II Reviewed

    Dai. Nishijima, M.Y.Ye, N.Ohno, S.Takamura

    J. Nucl. Mater.   Vol. 329-333   page: 1029-1033   2005

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  431. Micron-Bubble Formation on Polycrystal Tungsten due to Low-Energy and high-Flux Helium Plasma Exposure Reviewed

    D.Nishijima, M.Miyamoto, H.Iwakiri, M.Ye, N.Ohno, K.Tokunaga, N.Yoshida, S.Takamura

    Nuclear Fusion   Vol. 46   page: 561-564   2005

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  432. Overview of JT-60U progress towards steady-state advanced tokamak Reviewed

    S.Ide, N.Ohno, JT-60U Team

    Nuclear Fusion   Vol. 45   page: S48-S62   2005

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  433. Transition from electrostatic-to-electromagnetic mode in a radio-frequency Ar inductively coupled plasma in atmospheric pressure Reviewed International journal

    Razzak MA, Kondo K, Uesugi Y, Ohno N, Takamura S

    JOURNAL OF APPLIED PHYSICS   Vol. 95 ( 2 ) page: 427 - 433   2004.1

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    DOI: 10.1063/1.1635650

    Web of Science

  434. Proposal of Modeified Child-Langmuir Formula Describing Space-Charge Limited Current in Plasma Reviewed

    Y.Hagino, N.Ohno, S.Takamura

    Contrib. Plasma Phys.   Vol. 44 ( 1-3 ) page: 144-149   2004

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  435. Visualization of Intermittent Blobby Plasma Transport in Attached and Detached Plasmas of the NAGDIS-II Reviewed

    N.Ohno, K.Furuta, S.Takamura

    J. Plasma Fusion Res.   Vol. 80 ( 4 ) page: 275-276   2004

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  436. Moving-Surface Plasma-Facing Components for Particle Control in Steady State Magnetic Fusion Devices Reviewed

    Y.Hirooka, H.Fukushima, N.Ohno, S.Takamura

    Fusion Science and Technology   Vol. 45   page: 60-64   2004

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  437. Reconstruction of Velocity Distribution of density Bursts by Wavelet Analysis in the Linear Divertor Simulator NAGDIS-II Reviewed

    N.Ohno, V.P.Budaev, K.Furuta, H.Miyoshi, S.Takamura

    Contrib. Plasma Phys.   Vol. 44 ( 1-3 ) page: 222-227   2004

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  438. Space-Charge Limited Current from Plasma-Facing Material Surface Reviewed

    S.Takamura, N.Ohno, M.Y.Ye, T.Kuwabara

    Contrib. Plasma Phys.   Vol. 44 ( 1-3 ) page: 126-137   2004

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  439. Proposal of modified Child-Langmuir formula describing space-charge limited current in plasma Reviewed International journal

    Hagino Y, Ohno N, Takamura S

    CONTRIBUTIONS TO PLASMA PHYSICS   Vol. 44 ( 1-3 ) page: 144 - 149   2004

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    DOI: 10.1002/ctpp.200410019

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  440. Proof-of-principle experiments on the concept of moving-surface plasma-facing components - Hydrogen recycling over a titanium-gettered rotating drum Reviewed International journal

    Hirooka Y., Fukushima H., Ohno N., Takamura S.

    Fusion Engineering and Design   Vol. 65 ( 3 SPEC. ) page: 413 - 421   2003.4

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    In the magnetic fusion community much attention has recently been directed to particle control in the existing confinement experiments, as it is recognized that the core plasma performance can directly be affected by the edge conditions. However, it is still true that there is no clear strategy to cope with the needs for steady-state reactor operation. That is that, due to the saturation nature, wall conditioning such as boronization is not applicable for fuel and impurity particles control in steady-state devices, requiring a start from enabling concepts development. As a possible solution, the concept of moving-surface plasma-facing components (MS-PFCs) was proposed in our previous work and in the present work proof-of-principle experiments have been conducted. In this concept, the plasma-facing surface is mechanically circulated out-of-pile for regeneration of particle capturing capabilities by coating getter films on it. A prototypical MS-PFC test unit has been constructed for these proof-of-principle experiments, employing a rotating copper drum as the moving surface and titanium as the getter material. It has been indicated that, from Hα light intensity data taken in front of the rotating target, relative to no getter cases, approximately 6% reduced hydrogen recycling has been achieved at steady state. In support of these data, a first-order particle balance model predicts a 7% reduction in hydrogen recycling. © 2003 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0920-3796(03)00011-5

    Scopus

  441. Ion temperature measurement using an ion sensitive probe in the LHD divertor plasma Reviewed International journal

    Ezumi N., Masuzaki S., Ohno N., Uesugi Y., Takamura S.

    Journal of Nuclear Materials   Vol. 313-316 ( SUPPL. ) page: 696 - 700   2003.3

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    The first reliable measurement of ion temperature in the divertor plasma of the Large Helical Device has been done by using an ion sensitive probe. The satisfactory current-voltage characteristics of the ion collector for evaluating the ion temperature were obtained at the outer part of the divertor leg. Furthermore, simultaneous ion and electron temperature measurements were successfully done in this part. The results show that the ion temperature is higher than the electron temperature in the part. There is a possibility that the profiles of the evaluated ion temperature which shows relatively higher than the electron temperature at the outside of divertor leg are qualitatively explained by particle's orbits around the edge and divertor region. © 2003 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0022-3115(02)01364-8

    Scopus

  442. Experimental evaluation of space charge limited emission current from tungsten surface in high density helium plasma Reviewed International journal

    Hagino Y., Ohno N., Takamura S., Ye M.

    Journal of Nuclear Materials   Vol. 313-316 ( SUPPL. ) page: 675 - 678   2003.3

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    The experimental evaluation of space charge limited emission current from tungsten surface in high density helium plasma was done. It was found that the space charge limited current from the tungsten target plate saturated with an increase in sheath voltage. The space charge effect was predicted on the basis of boundary conditions of zero electric field on the material surface.

    DOI: 10.1016/S0022-3115(02)01381-8

    Scopus

  443. 非接触再結合プラズマ中の揺動特性 Reviewed

    大野哲靖、田中直行、高村秀一

      Vol. 7 ( 10 ) page: 1093-1101   2003

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  444. Experimental evaluation of space charge limited emission current from tungstn surface in high density helium plasma Reviewed

    Y.Hagino, N.Ohno, S.Takamura, M.Y.Ye

    Journal of Nuclear Materials   Vol. 313-316   page: 675-678   2003

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  445. Ion temperature measurement using an ion sensitie probe in the LHD divertor Reviewed

    N.Ezumi, S.Masuzaki, N.Ohno, Y.Uesugi, S.Takamura, LHD Experimental Group

    Journal of Nuclear Materials   Vol. 313-316   page: 696-700   2003

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  446. High-quality video streaming system for plasma diagnostics using super SINET Reviewed

    M.Emoto, K.Watanabe, S.Masuzaki, N.Ohno, H.Okade

    Rev. Sci. Instrum.   Vol. 74   page: 1766   2003

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  447. Self-consistent dusty sheaths in plasmas with two-temperature electrons Reviewed

    Yu.I.Chutov, O.Kravchenko, A.Pshenychnyj, R.Smirnov, K.Asano, N.Ohno, S.Takamura, Y.Tomita

    Physics of Plasmas   Vol. 10 ( 2 ) page: 546-552   2003

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  448. Incident ion energy dependence of bubble formation on tungsten surface with low energy and high flux helium plasma irradiation Reviewed

    D.Nishijima, M.Y.Ye, N.Ohno, S.Takamura

    Journal of Nuclear Materials   Vol. 313-316   page: 97-101   2003

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  449. Edge Plasma Turbulence in Fusion Devices: Bursty Behavior and Fractal Properties

    V.P.Budaev, S.Takamura, N.Ohno, A.Komori, S.Masuzaki, G.S.Kirnev, S.A.Grashin

    30th EPS Conference on Contr. Fusion and Plasma Phys., St. Petersburg, 7-11 July 2003 ECA   Vol. 27A   page: 3.174   2003

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  450. Intermittent Structures in the High Field Side Boundary of the HYBTOK-II Tokamak

    V.P.Budaev, S.Takamura, Y.Kikuchi, Y.Uesugi, N.Ohno

    30th EPS Conference on Contr. Fusion and Plasma Phys., St. Petersburg, 7-11 July 2003 ECA   Vol. 27A   page: 3.173   2003

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  451. Surface Morphology of Tungsten Irradiated by Low-Energy and High-Flux Steady State Helium Plasma

    D.Nishijima, M.Y.Ye, N.Ohno, S.Takamura

    30th EPS Conference on Contr. Fusion and Plasma Phys., St.Petersburg, 7-11 July 2003 ECA   Vol. 27-A   page: 2.163   2003

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  452. Structural Dynamics of Deep Negative Potential Well Formation in Small Tokamak Device CSTN-IV

    H.Kojima, Y.Fukuzawa, T.Manabe, N.Ohno, S.Takamura

    30th EPS Conference on Contr. Fusion and Plasma Phys., St.Petersburg, 7-11 July 2003 ECA   Vol. 27A   page: 2.130   2003

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  453. Experimental Observation and Statistical Analysis of Density Bursts in the Linear Divertor Simulator NAGDIS-II

    N.Ohno, K.Furuta, H.Miyoshi, S.Takamura, V.P.Budaev

    30th EPS Conference on Contr. Fusion and Plasma Phys., St. Petersburg, 7-11 July 2003 ECA   Vol. 27A   page: 2.154   2003

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  454. Influence of the Ion Beam on the Behavior of Dust Particles Trapped in an Ion Sheath

    T.Murakami, M.Sawai, T.Misawa, N.Ohno, S.Takamura

    AIP Conference Proceedings   Vol. 669   page: 101-104   2003

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  455. Sound Wave Propagation in Gases at Low Pressure

    T.Tonogaki, N.Ohno, S.Takamura, A.Tsushima

    AIP Conference Proceedings   Vol. 669   page: 113-116   2003

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  456. Fluctuation Characteristics in Detached Recombining Plasmas

    N.Ohno, N.Tanaka, S. Takamura, V.Budaev

    AIP Conference Proceedings   Vol. 669   page: 240-243   2003

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  457. Transition from Electrostatic to Electromagnetic Mode in a Radio Frequency Ar Induction Plasma in Atmospheric Pressure Reviewed

    M.A.Razzak, K.Kondo, Y.Uesugi, N.Ohno, S.Takamura

    J. Appl. Phys.   Vol. 95 ( 2 ) page: 427-433   2003

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  458. Intermittent structures in the high field side boundary of the HYBTOK-II tokamak Reviewed

    V.P.Budaev, S.Takamura, Y.Kikuchi, Y.Uesugi, N.Ohno

    Czechoslovak Journal of Phys   Vol. 53 ( 10 ) page: 863-868   2003

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  459. Formation and dynamics of very deep negative potential well in the small tokamak device CSTN-IV Reviewed

    H.Kojima, Y.Fukuzawa, T.Manabe, S.Takamura, T.Okada, N.Ohno

    Czechoslovak Journal of Phys.   Vol. 53 ( 10 ) page: 895-902   2003

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  460. プラズマと接する固体表面からの空間電荷制限放出電流 Reviewed

    高村秀一、大野哲靖

    放電研究   Vol. 46 ( 3 ) page: 2-22   2003

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  461. Proof of principle experiments on the concept of moving-surface plasma-facing components-hydrogen recycling over a titanium-gettered ratating drum Reviewed

    Y.Hirooka, H.Fukushima, N.Ohno, S.Takamura

    Fusion Engineering and Design   Vol. 6   page: 413-421   2003

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  462. Blister formation on tungsten surface under low energy and high flux hydrogen plasma irradiation in NAGDIS-I Reviewed

    M.Y.Ye, H.Kanehara, S.Fukuta, N.Ohno, S.Takamura

    Journal of Nuclear Materials   Vol. 313-316   page: 72-76   2003

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  463. 25aA28P Statistical analysis of fluctuation property in edge plasmas of the LHD Reviewed

    MIYOSHI Hideaki, TAKAMURA Shuichi, OHNO Noriyasu, MASUZAKI Suguru, KOMORI Akio, Budaev V.P.

      ( 20 )   2003

  464. 28aA17P Influence of Energetic Electron Components on Unstable Oscillation of Dust Particles Trapped in Plasma-Sheath Boundary Reviewed

    KOBAYASHI Atsuhiro, IMASATO Kae, OHNO Noriyasu, TAKAMURA Shuichi

      ( 20 )   2003

  465. 27pB22P Fluctuation Analysis in Detached and Attached Plasmas Reviewed

    Furuta K., Ohno N., Takamura S.

      ( 20 )   2003

  466. 26aA40P Formation of Deep Potential Well by Electrode Biasing in Tokamak Device Reviewed

    FUKUZAWA Yuma, KOJIMA Hiroki, OKADA Takahiro, OHNO Noriyasu, TAKAMURA Shuichi, IGUCHI Tetsuo

      ( 20 )   2003

  467. 25aB37P Construction of High Heat Flux Toroidal Divertor Plasma Simulator Reviewed

    Sora Shigeki, Kitahara Hiroyoshi, Ohno Noriyasu, Uesugi Yoshihiko, Takamura Shuichi

      ( 20 )   2003

  468. 25aB11P Blister Formation on Low-Temperature Refractory Metal Surface under Low Energy and High Flux Hydrogen Plasma Irradiation Reviewed

    SUGIMOTO Takanori, OHNO Noriyasu, TAKAMURA Shuichi

      ( 20 )   2003

  469. Generation and characteristics of a detached recombining plasma and its dynamic behaviour-a bridge between fusion plasmas and low-temperature ionized gases Reviewed International journal

    Takamura S, Ohno N, Nishijima D, Uesugi Y

    PLASMA SOURCES SCIENCE & TECHNOLOGY   Vol. 11 ( 3A ) page: A42 - A48   2002.8

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  470. Characteristics of detached plasmas associated with electron-ion and molecular assisted recombinations in NAGDIS-II Reviewed International coauthorship International journal

    Nishijima D., Wenzel U., Ohsumi K., Ohno N., Uesugi Y., Takamura S.

    Plasma Physics and Controlled Fusion   Vol. 44 ( 5 ) page: 597 - 610   2002.5

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    Recombination in a helium and helium-hydrogen plasma was experimentally investigated in the linear divertor simulator NAGDIS-II. To identify the physical mechanisms, electron-ion recombination (EIR) and molecular assisted recombination (MAR), the plasma parameters in the recombining region have been measured. We used spectroscopic techniques on the basis of continuum emission and line emission from highly excited levels due to EIR and Langmuir probes. The dependence of the plasma parameters on the neutral pressure in a pure helium plasma and in a helium-hydrogen mixture shows clearly that recombination is caused by different processes in the two cases. In a pure helium plasma a roll-over and a following decrease of the electron density as well as a monotonic decrease of the electron temperature down to 0.1 eV were observed when increasing the helium pressure. Here EIR is the recombination mechanism. Conversely, when hydrogen is added to the helium plasma, the electron density decreases monotonically while the central electron temperature remains above 1 eV. This particular behaviour in the helium-hydrogen plasma can only be explained by the dominant action of MAR.

    DOI: 10.1088/0741-3335/44/5/307

    Scopus

  471. Response to "comment on 'dynamic behaviors of dust particles in the plasma-sheath boundary'" [Phys. Plasmas 9, 1057 (2002)] Reviewed International journal

    Takamura S., Ohno N., Misawa T., Nunomura S.

    Physics of Plasmas   Vol. 9 ( 3 )   2002.3

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    DOI: 10.1063/1.1446462

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  472. Proposal of Flexible Atomic and Molecular Process Management for Monte Carlo Impurity Transport Code Based on Object Oriented Method Reviewed

    K.Asano, N.Ohno, S.Takamura

    Contrib. Plasma Physics   Vol. 42   page: 157-162   2002

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  473. Generation and characteristics of detached recombining plasma and its dynamic behaviour - a bridge between fusion plasmas and low-temperature ionized gases Reviewed

    S.Takamura, N.Ohno, D.Nishijima, Y.Uesugi

    Plasma Sources Sci. Technol.   Vol. 11 ( 3A ) page: A42-A4   2002

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  474. Response to Comment on "Dynamic Behaviours of Dust Particles in the Plasma Sheath Boundary" Reviewed

    S.Takamura, N.Ohno, T.Misawa, S.Nunomura

    Physics of Plasmas   Vol. 9   page: 1060-1061   2002

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  475. Characteristics of Detached Plasmas Associated with Electron-Ion and Molecular Assisted Recombination in NAGDIS-II Reviewed

    D.Nishijima, U.Wenzel, K.Ohsumi, N.Ohno, Y.Uesugi, S.Takamura

    Plasma Physics Controlled Fusion   Vol. 44   page: 597-610   2002

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  476. Parametric Excitation of a Dust Particle Trapped in a Plasma-Sheath Boundary Reviewed

    N.Ohno, M.Sawai, T.Misawa, K.Asano, S.Takamura

    Physica Scripta   Vol. T98   page: 81-86   2002

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  477. Analysics of Detached Recombining Plasmas by Collisional-Radiative Model with Energetic Electron Component Reviewed

    N.Ohno, M.Motoyama, S.Takamura

    Contrib. Plasma Physics   Vol. 42   page: 419-424   2002

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  478. Heat Pulse in a Simulated Divertor Plasmas

    Y.Uesugi, S.Takamura, K.Ohsumi, N.Ohno, D.Nishijima

    29th EPS Conference on Contr. Fusion and Plasma Phys., Montroux, Switzerland, 17-21 June 2002 ECA   Vol. 26B   page: 1.087   2002

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  479. 26aB13P Tungsten Surface Irradiated by Low Energy and High Flux Helium Plasma Reviewed

    Nishijima D., Ye M.Y., Ohno N., Takamura S.

      ( 19 )   2002

  480. Analysis of detached recombining plasmas by collisional-radiative model with energetic electron component Reviewed International journal

    Ohno N, Motoyama M, Takamura S

    CONTRIBUTIONS TO PLASMA PHYSICS   Vol. 42 ( 2-4 ) page: 419 - 424   2002

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    Web of Science

  481. 28pB09 Experimental Evaluation of Space-Charge Limited Emission Current from Tungsten Surface in High Density Helium Plasma Reviewed

    HAGINO Yoshiharu, YE Minyou, OHNO Noriyasu, TAKAMURA Shuichi

      ( 19 )   2002

  482. 26pA07 Thermoelectron Emission from a Small Electrode heated with Plasma Heat Flux in AC Tokamak Discharge Reviewed

    MANABE Toshiharu, KOJIMA Hiroki, FUKUZAWA Yuma, OHNO Noriyasu, TAKAMURA Shuichi

      ( 19 )   2002

  483. 26aB18P Proof-of-principle experiments on the concept of particle control by moving-surface plasma-facing components Reviewed

    HIROOKA Yoshi, FUKUSHIMA Houju, OHNO Noriyasu, TAKAMURA Shuichi

      ( 19 )   2002

  484. Simulation Experiments on Erosion and Redeposition of High - Z Materials in a Linear Plasma Device Reviewed

    OHNO Noriyasu, TAKAMURA Shuichi

    Journal of plasma and fusion research   Vol. 77 ( 9 ) page: 864 - 868   2001.9

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    Erosion and redeposition processes of molybdenum, a high-Z material, were investigated in the linear plasma device TPD-I. Comparison between the experimental results and numerical analysis with a 3D Monte Carlo simulation code indicated that the observed erosion profile could be explained by taking account of the effect of prompt redeposition of high-Z material.

  485. Static and dynamic behaviour of plasma detachment in the divertor simulator experiment NAGDIS-II Reviewed International coauthorship International journal

    Ohno N., Nishijima D., Takamura S., Uesugi Y., Motoyama M., Hattori N., Arakawa H., Ezumi N., Krasheninnikov S., Pigarov A., Wenzel U.

    Nuclear Fusion   Vol. 41 ( 8 ) page: 1055 - 1065   2001.8

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    A comprehensive investigation has been performed of the static and dynamic behaviour of detached recombining plasmas in the linear divertor plasma simulator NAGDIS-II. For stationary plasma detachment, the transition from electron ion recombination (EIR) to molecular activated recombination (MAR) has been observed by injecting hydrogen gas into high density helium plasmas. The particle loss rate due to MAR is found to be comparable to that of EIR. Experiments have also been performed by the injection of a plasma heat pulse produced by RF heating into the detached helium plasma to demonstrate the dynamic behaviour of volumetric plasma recombination. Negative spikes in the Balmer series line emission were observed and found to be similar to the so called negative ELM observed in tokamak divertors. Observed Balmer spectra were analysed in detail using the collisional-radiative model. A rapid increase of the ion flux to the target plate was observed associated with the re-ionization of the highly excited atoms generated by EIR.

    DOI: 10.1088/0029-5515/41/8/309

    Scopus

  486. Evidence for the importance of radial transport in plasma detachment in the Nagoya University Divertor Simulator (NAGDIS-II) Reviewed International journal

    Hollmann E., Whyte D., Nishijima D., Ohno N., Uesugi Y., Ezumi N.

    Physics of Plasmas   Vol. 8 ( 7 ) page: 3314 - 3320   2001.7

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    Measurements of ion and electron temperatures have been performed in detaching helium -hydrogen plasmas in a linear divertor simulator experiment using spectroscopy, a Langmuir probe, and an omegatron mass spectrometer. Detachment in these plasmas is characterized by a significant (≈20×) reduction in the central plasma flux at the target plate as the target region neutral pressure is increased from 2 to 12 mTorr. The data indicate that partially detached gas-target plasmas consist of a hot (Te≈5 eV) core region along the axis of the plasma column, surrounded by a cold (Te ≈0.1 eV) halo region of recombining plasma. At Te = 5 eV, plasma recombination is negligible compared with ionization; these experiments therefore provide evidence that detachment is primarily caused by radial transport and by a gradual drop in the ionization source as the temperature of the core region drops below 5 eV. © 2001 American Institute of Physics.

    DOI: 10.1063/1.1372664

    Scopus

  487. Dynamic behavior of detached recombining plasmas during ELM-like plasma heat pulses in the divertor plasma simulator NAGDIS-II Reviewed International journal

    Uesugi Y, Hattori N, Nishijima D, Ohno N, Takamura S

    JOURNAL OF NUCLEAR MATERIALS   Vol. 290   page: 1134 - 1137   2001.3

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    Web of Science

  488. Evaluation of electron temperature in detached recombining plasmas Reviewed International coauthorship International journal

    Nishijima D., Wenzel U., Motoyama M., Ohno N., Takamura S., Krasheninnikov S.

    Journal of Nuclear Materials   Vol. 290-293   page: 688 - 691   2001.3

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    Detailed spectroscopic measurements have been carried out in the linear divertor plasma simulator, NAGDIS-II in order to acquire the accurate evaluation of the electron temperature, which leads to a deeper understanding of the characteristics of detached recombining plasmas. Electron temperature in the detached recombining plasmas was evaluated by two different spectroscopic methods, using continuum emission and a series of line emission from highly excited levels, giving different electron temperatures. The reasons are discussed based on the effects of energetic electrons.

    DOI: 10.1016/S0022-3115(00)00528-6

    Scopus

  489. Experimental observation of vertically polarized transverse dust-lattice wave propagating in a one-dimensional strongly coupled dust chain Reviewed International journal

    Misawa T., Ohno N., Asano K., Sawai M., Takamura S., Kaw P.K.

    Physical Review Letters   Vol. 86 ( 7 ) page: 1219 - 1222   2001.2

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    The existence of transverse dust-lattice wave (T-DLW) propagating in a one-dimensional strongly coupled dust chain levitated in dc argon plasma at low gas pressure was assessed. Both parts of the complex wave number were measured in the experiments. The real part showed that the T-DLW propagation as a backward wave.

    DOI: 10.1103/PhysRevLett.86.1219

    Scopus

  490. Experimental Observation of Vertically Polarized Transverse Dust Lattice Wve Propagating in a One Dimensional Strongly Coupled Dust Chain Reviewed

    T.Misawa, N.Ohno, K.Asano, M.Sawai, S.Takamura, P.K.Kaw

    Physcal Review Letters   Vol. 86 ( 7 ) page: 1219-1222   2001

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  491. Influence of Plasma Resistance and Fluctuation on Probe Characeteristics in Detached Recombining Plasmas Reviewed

    N.Ohno, N.Tanaka, N.Ezumi, D.Nishijima, S.Takamura

    Contib. Plasma Physics   Vol. 41   page: 473-480   2001

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  492. Static and Dynamic Behaviors of Detached Plasma in Divertor Simulator NAGDIS-II Reviewed

    S.Takamura, N.Ohno, Y.Uesugi, D.Nishijima, K.Ohsumi, M.Motoyama, N.Hattori, N.Ezumi, S.Krasheninnikov, A.Pigarov, U.Wenzel

    Journal of Plasma and Fusion Research SERIES   Vol. 4   page: 138-145   2001

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  493. Dynamic Behaviors of Dust Particles in the Plasma-Sheath Boundary Reviewed

    S.Takamura, T.Misawa, N.Ohno, S.Nunomura, M.Sawai, K.Asano, P.K.Kaw

    Physics of Plasmas   Vol. 8 ( 5 ) page: 1886-1892   2001

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  494. プラズマと接する固体表面からの空間電荷制限電流 Reviewed

    桑原竜弥、大野哲靖、高村秀一、叶民友

      Vol. 77 ( 5 ) page: 464-475   2001

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  495. Evidence for the Importance of Radial Transport in Plasma Detacment in the Nagoya University Divertor Simulator(NAGDIS-II) Reviewed

    E.M.Hollmann, D.G.Whyte, D.Nishijima, N.Ohno, Y.Uesugi, N.Ezumi

    Physics of Plasmas   Vol. 8 ( 7 ) page: 3314-3320   2001

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  496. *Static and Dynamic Behavior of Plasma Detachment in the Divertor Simulator Experiment NAGDIS-II Reviewed

    N.Ohno, D.Nishijima, S.Takamura, Y.Uesugi, M.Motoyama, N.Hattori, H.Arakawa, N.Ezumi, S.Krasheninnikov, A.Pigarov, U.Wenzel

    Nuclear Fusion   Vol. 41 ( 8 ) page: 1055-1065   2001

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  497. Evaluation of Electron Teperature in Detached Recombining Plasma Reviewed

    D.Nishijima, U.Wenzel, M.Motoyama, N.Ohno, S.I.Krasheninnikov, S.Takamura

    Journal of Nuclear Materials   Vol. 290-293   page: 688-691   2001

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  498. 小特集「プラズマ対向面での損耗・再堆積研究の進展」3.直線型プラズマ装置を用いた高融点金属材料の損耗・再堆積モデル実験

    大野哲靖、高村秀一

    プラズマ・核融合学会誌   Vol. 77 ( 9 ) page: 864-868   2001

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  499. Dynamic Response of Detached Recombining Plasmas to ELM-Like Plasma Heat Pulse Produced by RF Heating

    K.Ohsumi, D.Nishijima, N.Ohno, Y.Uesugi, S.Takamura

    Proc. of XXV International Conference on Phenomena in Ionized Gases, Nagoya, Japan     page: 195-196   2001

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  500. Influence of Supra-Thermal Electrons on Propagation of Transverse Dust Lattice Wave

    T.Misawa, K.Asano, M.Sawai, N.Ohno, S.Takamura

    Proc. of XXV International Conference on Phenomena in Ionized Gases, Nagoya, Japan     page: 65-66   2001

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  501. MD Particle Simulation on Dust Lattice Wave

    K.Asano, T.Misawa, N.Ohno, S.Takamura, S.Vladimirov

    Proc. of XXV International Conference on Phenomena in Ionized Gases, Nagoya, Japan     page: 61-62   2001

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  502. Fluctuations in Detached Recombining Plasmas

    N.Tanaka, N.Ohno, S.Takamura

    Proc. of XXV International Conference on Phenomena in Ionized Gases, Nagoya, Japan     page: 345-346   2001

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  503. Modifications of Tungsten Surface under Low Ionic Energy and High Flux Plasma Irradiation

    K.Moriguchi, S.Fukuta, M.Y.Ye, N.Ohno, S.Takamura

    Proc. of XXV International Conference on Phenomena in Ionized Gases, Nagoya, Japan     page: 83-84   2001

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  504. 27aA01 [招待講演]非接触プラズマにおける再結合過程とその動的応答(プラズマ基礎・応用) Reviewed

    大野 哲靖, 高村 秀一, 上杉 喜彦, 西島 大輔, 大住 光一, 田中 直行, 嶋崎 弘志

    プラズマ・核融合学会年会予稿集   ( 18 )   2001

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    Publisher:プラズマ・核融合学会  

  505. 30pA17P Ion Temperature Measurement using an Ion Sensitive Probe in PSI-2 Reviewed

    EZUMI Naomichi, OHNO Noriyasu, TAKAMURA Shuichi, KATSUMATA Itsuo, MASUZAKI Suguru, Kiss'ovski Zh., Bohmeyer W., Fussmann G.

      ( 18 )   2001

  506. 29pA20P Proof of Principle Experiment on Particle Control with Moving-Belt Plasma Facing Component Reviewed

    Fukushima Hoju, Hirooka Yoshihiko, Ohno Noriyasu, Takamura Shyuichi

      ( 18 )   2001

  507. 28aB15P Dynamic Response of Detached Recombining Plasmas to ELM-Like Heat Pulse Produced by Whistler Wave Reviewed

    OSUMI Koichi, NISHIJIMA Daisuke, OHNO Noriyasu, UESUGI Yoshihiko, TAKAMURA Shuichi

      ( 18 )   2001

  508. 27pA12P Measurements of Fluctuations in Detached Recombining Plasmas (2) Reviewed

    Tanaka N., Ohno N., Takagi M., Takamura S., Budaev V.

      ( 18 )   2001

  509. 27pA11P Analysis of dynamic behaviors of detached plasmas by time-dependent collisional radiative code and nuid code Reviewed

    SHIMAZAKI Hiroshi, OHNO Noriyasu, TAKAMURA Shuichi

      ( 18 )   2001

  510. Influence of plasma resistance and fluctuation on probe characteristics in detached recombining plasmas Reviewed International journal

    Ohno N., Tanaka N., Ezumi N., Nishijima D., Takamura S.

    Contributions to Plasma Physics   Vol. 41 ( 5 ) page: 473 - 480   2001

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    In order to find the causes of the strong anomaly of current-voltage characteristics of Langmuir probe observed in detached recombining plasmas in a linear divertor plasma simulator, NAGDIS-II, we have investigated plasma resistance along a magnetic field and potential fluctuations in the detached recombining plasmas. Simple calculation on the ratio between the plasma length, at which plasma resistance and resistance of ion sheath formed around a probe tip become equal, and an electron collection length indicates that the evaluation of electron temperature Te becomes inaccurate at Te of less than 0.6 eV when plasma density and neutral pressure are 1.0 × 1018 m-3 and 10 mtorr, respectively. The potential fluctuation in detached recombining plasmas was found to be so large compared to Te/e, which can also modify the probe characteristics.

    DOI: 10.1002/1521-3986(200109)41:5<473::AID-CTPP473>3.0.CO;2-8

    Scopus

  511. The Plasma Boudary of Magnetic Fusion Devices Reviewed

      Vol. 76 ( 10 )   2000.10

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  512. Detached Recombining Plasmas in relation to Volumetric Hydrogen Recycle in Hydrogen Recycling at Plasma Facing Materials, ed. by C.H.Wu

    S.Takamura, N.Ohno, N.Ezumi, D.Nishijima, S.I.Krasheninnikov, A.Yu. Pigarov

    NATO Science Series, II. Mathematics, Physics and Chemistry, Vol. 1, Kluwer Academic Publishers   Vol. 1   page: 59-66   2000

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  513. Fundamental Processes of Plasma Heat Flow through Sheaths to Material Surfaces in Recent Research Development in Plasmas Vol.1-2000

    S.Takamura, M.Y.Ye, N.Ohno, Y.Uesugi

    Transworld Research Network, 2000, pp.41-64     page: 41-64   2000

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  514. Fundamental Process of Plasma Heat Flow through Sheaths to Material Surfaces in Recent Research Development in Plasmas Reviewed

    S.Takamura, M.Y.Ye, N.Ohno, Y.Uesugi

    Transworld Research Network     page: 41-64   2000

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  515. Dynamic Behavior of Detached Recombining Plasmas during ELM-like Plasma Heat Pulse in the Diverotr Plasma Simulator NAGDIS-II Reviewed

    Y.Uesugi, N.Hattori, D.Nishijima, N.Ohno, S.Takamura

    Journal of Nuclear Materials   Vol. 290-293   page: 1134-1137   2000

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  516. Effects of Condensible Impurities on the Erosion Behavior of the Plasma-Facing Materials Reviewed

    N.Ohno, S.Uno, Y.Hirooka, S.Takamura

    Journal of Nuclear Materials   Vol. 290-293   page: 299-302   2000

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  517. 低ガス圧プラズマにおけるクーロン結晶の生成と浮遊位置制御 Reviewed

    三沢達也、布村正太、浅野和仁、大野哲靖、高村秀一

    電気学会論文誌A   Vol. 120-A ( 2 ) page: 180-185   2000

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  518. Modifications of Tungsten Surface Irradiated by Low Energy and High Flux Helium Plasma Reviewed

    M.Y.Ye, S.Fukuta, N.Ohno, S.Takamura, K.Tokunaga, N.Yoshida

    Journal of Plasma and Fusion Research SERIES   Vol. 3   page: 265-269   2000

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  519. 2-D PIC Simulation on Space-Charge Limited Emission Current from Plasma-Facing Components Reviewed

    K.Asano, N.Ohno, M.Y.Ye, S.Fukuta, S.Takamura

    Contib. Plasma Physics   Vol. 40   page: 478-483   2000

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  520. Dynamic Behavior of Detached Recombining Plasmas for Plasma Heat Pulse in the Diverotr Simulator NAGDIS-II Reviewed

    N.Ohno, D.Nishijima, M.Motoyama, N.Hattori, Y.Uesugi, S.Takamura, U.Wenzel

    Journal of Plasma and Fusion Research SERIES   Vol. 3   page: 202-205   2000

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  521. Application of Strongly Ionized AC Tokamak Plasma for Synthesis of TiN Thin Films Reviewed

    M.Y.Ye, O.Matsuda, N.Ohno, Y.Uesugi, M.Takagi, S.Takamura

    Vacuum   Vol. 59   page: 55-62   2000

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  522. Observation of Transverse Dust Lattice Wave Excited by Unstable Vertical Oscillations of Dust Particles in an Ion Sheath with Low Gas Pressure Reviewed

    T.Misawa, S.Nunomura, N.Ohno, S.Takamura

    Japan Journal of Applied Physics   Vol. 39   page: L511-L553   2000

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  523. Detached Recombining Plasmas in relation to Volumetric Hydrogen Recycle Reviewed

    S.Takamura, N.Ohno, N.Ezumi, D.Nishijima, S.I.Krasheninnikov, A.Yu.Pigarov

    Hydrogen Recycling at Plasma Facing Materials, ed. by Ch.H.Wu, NATO Science Series, II. Mathematics, Physics and Chemistry, Kluwer Academic Pubilishers   Vol. 1   page: 59-66   2000

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  524. Dynamic Behaviors of Dust Particles in the Plasma-Sheath Boundary

    S.Takamura, T.Misawa, N.Ohno, S.Nunomura, M.Sawai, K.Asano, P.K.Kaw

    42nd Annual Meeting of the Division of Plasma Physics of the American Physical Society, combined with ICPP2000, Quebec, Canada   Vol. 1   2000

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  525. Recombination Plasmas in the ASDEX Upgrade Divertor and the Divertor Simulator NAGDIS-II

    U.Wenzel, R.Pugno, K.Schmidtmann, N.Hattori, D.Nishijima, N.Ohno, S.Takamura, Y.Uesugi

    Proc. of 27th EPS Conf. on Controlled Fusion and Plasma Physics, Budapest, Hungary   Vol. 24B   page: 1192-1195   2000

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  526. Bubble Formation in Tungsten Surface during Low Energy and High Flux Helium/Hydrogen Plasma Irradiation

    M.Y.Ye, S.Fukuta, N.Ohno, S.Takamura

    Proc. of Japan/US Workshop(00FT5-1) on High Heat Flux Components and Plasma Surface Interactions for Next Fusion Devices, Osaka, Japan   Vol. 1   page: 288-298   2000

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  527. 2-D PIC simulation on space-charge limited emission current from plasma-facing components Reviewed

    Asano K, Ohno N, Ye MY, Fukuta S, Takamura S

    CONTRIBUTIONS TO PLASMA PHYSICS   Vol. 40 ( 3-4 ) page: 478 - 483   2000

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  528. 27pA10P Radial Profile Measurement of Detached Plasma in Divertor Plasma Simulator NAGDIS-II Reviewed

      ( 17 )   2000

  529. 27pA08P Measurements of Fluctuations in Detached Recombining Plasmas Reviewed

      ( 17 )   2000

  530. Dynamic Response of Dust Particles trapped in a Plasma-Sheath Boundary to External Forced Oscillation (2) Reviewed

    Sawai M., Misawa T., Ohno N., Takamura S.

    Meeting Abstracts of the Physical Society of Japan   Vol. 55 ( 0 )   2000

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    DOI: 10.11316/jpsgaiyo.55.2.2.0_186_2

  531. 2-D PIC Simulation on Space-Change Limited Emission Current from Plasma-Facing Components Reviewed

    Asano K., Ohno N., Ye M. Y., Fukuta S., Takamura S.

    Meeting Abstracts of the Physical Society of Japan   Vol. 55 ( 0 )   2000

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    DOI: 10.11316/jpsgaiyo.55.1.2.0_172_4

  532. Dynamic Response of Dust Particles Trapped Reviewed

    Sawai M., Misawa T., Ohno N., Takamura S.

    Meeting Abstracts of the Physical Society of Japan   Vol. 55 ( 0 )   2000

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    DOI: 10.11316/jpsgaiyo.55.1.2.0_151_4

  533. Recent Topics in Experiments. Molecular Activated Recombination Processes in Divertor Plasmas Reviewed

    OHNO Noriyasu

    Journal of Plasma and Fusion Research   Vol. 75 ( 10 ) page: 1162 - 1168   1999.10

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    Molecular processes in detached divertor plasmas, especially molecular activated recombination processes, are briefly reviewed. Several reaction chains related to the volumetric recombination process, that are associated with the vibrationally excited hydrogen molecule are explained. Experimental observations of the molecular activated recombination are also reported.

    DOI: 10.1585/jspf.75.1162

  534. CD-ROM Study on Plasma Dynamics Using Scientific Animation II Reviewed

      Vol. 75 ( 10 )   1999.10

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  535. PSI in Fusion Devices Edge Plasma Physics and Atomic-Molecular Processes Reviewed

    OHNO Noriyasu

    Journal of Plasma and Fusion Research   Vol. 75 ( 4 ) page: 378 - 383   1999.4

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    Edge plasma physics and atomic-molecular processes relating to plasma heat flow to material surfaces are discussed. The local heat flow was found to be enhanced by a thermal contraction induced by cross-field potential variation in a plasma, resulting in hot spot formation on the plasma-facing materials due to nonlinear thermal bifurcation induced by thermoelectron emission. Also examined is the recombination enhancement due to the vibrationally excited hydrogen molecule generated from material surfaces in detached plasma with molecular activated recombination.

    DOI: 10.1585/jspf.75.378

  536. Molecular activated recombination in detached recombining plasmas - Reply Reviewed International coauthorship International journal

    Ohno N, Ezumi N, Takamura S, Krasheninnikov SI, Pigarov AY

    PHYSICAL REVIEW LETTERS   Vol. 82 ( 10 ) page: 2216 - 2216   1999.3

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    Web of Science

  537. Two-dimensional structure of the detached recombining helium plasma associated with molecular activated recombination Reviewed International coauthorship International journal

    Nishijima D., Ezumi N., Kojima H., Ohno N., Takamur S., Krasheninnikov S., Pigarov A.

    Journal of Nuclear Materials   Vol. 266   page: 1161 - 1166   1999.3

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    The structural change of the detached plasmas associated with the molecular activated recombination (MAR) has been studied in a high density helium plasma with helium or hydrogen puff in the linear divertor plasma simulator, NAGDIS-II. The ion particle flux with the hydrogen gas puff starts to decrease in the upstream region close to the plasma source, compared to that with the helium puff. The reduction of the ion particle flux along the magnetic field is found to depend on the plasma density. With the hydrogen gas puff, the attenuation of the ion particle flux is getting smaller as increasing plasma density, which is opposite tendency in pure helium detached plasma where the conventional electron-ion recombination (EIR) is dominating.

    DOI: 10.1016/S0022-3115(98)00565-0

    Scopus

  538. Contribution of molecular activated recombination to hydrogen plasma detachment in the divertor plasma simulator NAGDIS-II Reviewed International coauthorship International journal

    Ezumi N., Nishijima D., Kojima H., Ohno N., Takamura S., Krasheninnikov S., Pigarov A.

    Journal of Nuclear Materials   Vol. 266   page: 337 - 342   1999.3

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    We have performed experiments on detached hydrogen plasmas associated with molecular activated recombination (MAR) in a linear divertor plasma simulator. Reductions of the ion particle flux and heat load to the target plate were clearly observed in hydrogen plasmas with the hydrogen gas puff. Detailed analysis of Balmer series spectra with the Collisional-Radiative Atomic-Molecular data (CRAMD) code shows that MAR mainly appears as a weak dependence of the Balmer series emission intensities on experimental conditions in detached hydrogen plasmas. The plasma conditions necessary to obtain plasma detachment through MAR or EIR (electron ion recombination including the radiative and three-body recombination) in tokamak divertors are also discussed.

    DOI: 10.1016/S0022-3115(98)00533-9

    Scopus

  539. Hot spot formation on electron-emissive target plate with plasma potential variation across magnetic field Reviewed International journal

    Ye MY, Kudose K, Kuwabara T, Ohno N, Takamura S

    JOURNAL OF NUCLEAR MATERIALS   Vol. 266   page: 742 - 746   1999.3

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    Web of Science

  540. 小特集「プラズマ原子・分子過程の展望」5.最近の実験的なトピックス 5.1ダイバータプラズマ中の分子活性化再結合過程

    大野哲靖

    プラズマ・核融合学会誌   Vol. 75 ( 10 ) page: 1162-1168   1999

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  541. Hot Spot Formation on Electron-Emissive Target Plate with Plasma Potential Variation acoss Magnetic Field Reviewed

    M.Y.Ye, K.Kudose, T.Kuwabara, N.Ohno, S.Takamura

    Journal of Nuclear Materials   Vol. 266-269   page: 1001-1004   1999

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  542. Simulation on Structure and Dynamic Behavior of Dust Particles in a Direct Current Plasma Sheath Reviewed

    K.Asano, N.Ohno, S.Takamura

    Journal of Plasma and Fusion Research   Vol. 75 ( 10 ) page: CD-ROM   1999

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  543. Instability of Dust Particles in a Coulomb Crystal due to Delayed Charging Reviewed

    S.Nunomura, T.Misawa, N.Ohno, S.Takamura

    Physical Review Letters   Vol. 83 ( 10 ) page: 1970-1973   1999

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  544. Dynamic response of detached recombining plasmas to plasma heat pulse in a divertor simulator Reviewed

    N.Ohno, M.Tanaka, N.Ezumi, D.Nishijima, S.Takamura, S.I.Krasheninnikov, A.Yu.Pigarov, J.Park

    Physics of Plasmas   Vol. 6 ( 6 ) page: 2486-2494   1999

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  545. Two-dimensional structure of the detached recombining plasmas associated with molecular acivated recombination Reviewed

    D.Nishijima, N.Ezumi, H.Kojima, N.Ohno, S.Takamura, S.I.Krasheninnikov, A.Yu.Pigarov

    Journal of Nuclear Materials   Vol. 266-269   page: 1161-1166   1999

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  546. Contribution of molecular activated recombination to hydrogen plasma detachment in the divertor plasma simulator, NAGDIS-(]G0002[) Reviewed

    N.Ezumi, D.Nishijima, H.Kojima, N.Ohno, S.Takamura, S.I.Krasheninnikov, A.Yu,Pigarov

    Journal of Nuclear Materials   Vol. 266-269   page: 337-342   1999

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  547. 小特集「多様なPSI現象」4.核融合装置におけるプラズマ・表面相互作用 4.1周辺プラズマ物理と原子・分子過程

    大野哲靖

    プラズマ・核融合学会誌   Vol. 75 ( 4 ) page: 378-383   1999

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  548. 小特集「プラズマ原子・分子過程の展望」5.最近の実験的なトピックス5.1ダイバータプラズマ中の分子活性化再結合過程

    大野哲靖

    プラズマ・核融合学会誌   Vol. 75 ( 10 ) page: 1162-1168   1999

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  549. Modification of Tungsten Surface Irradiated by Low Energy and High Flux Helium Plasma

    M.Y.Ye, S.Fukuta, N.Ohno, S.Takamura, K.Tokunaga, N.Yoshida

    Proc. of 2nd IAEA TCM on Steady-State Operation of Magnetic Fusion Devices, Vol.II FURKU Report 99-05   Vol. II   page: 611-617   1999

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  550. Application of Strongly Ionized AC Tokamak Plasma for Synthesis of TiN Thin Films

    M.Y.Ye, O.Matsuda, N.Ohno, Y.Uesugi, M.Takagi, S.Takamura

    The 2nd Int. Symposium on Applied Plasma Science, Osaka, Japan, 1999, Proc. of ISAPS99, Advances in Applied Plasma Science   Vol. 2   page: 23-28   1999

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  551. Instabilities of Dust Particles Levitated in an Ion Sheath with Low Gas Pressure

    T.Misawa, S.Nunomura, K.Asano, N.Ohno, S.Takamura

    Proc. 2nd Int. Conf. on the Physics of Dusty Plasmas, ICPDP-99, in "Frontiers in Dusty Plasmas", Hakone   Vol. Elsevier   page: 465-468   1999

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  552. Structural Formation and Stability of Coulomb Clouds in Medium through Low Gas Pressure Range

    S.Takamura, N.Ohno, S.Nunomura, T.Misawa, K.Asano

    Proc. 2nd Int. Conf. on the Physics of Dusty Plasmas, ICPDP-99, in "Frontiers in Dusty Plasmas",Hakone,   Vol. Elsevier   page: 337-344   1999

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  553. Ion Temperature Measurement and Energy Balance in Detached Plasmas in the Divertor Simulator, NAGDIS-II

    D.Nishijima, D.G.Whyte, Y.Uesugi, N.Ohno, N.Ezumi, Y.Hirohashi, H.Arakawa, S.Takamura, I. Katsumata

    Proc. 26th EPS Conf. on Controlled Fusion and Plasma Physics, Maastricht, Europhysics Conference Abstracts   Vol. 23J   page: 485-488   1999

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  554. Dynamic Response of Detached Recombining Plasmas to Plasma Heat Pulse Produced by RF Heating Reviewed

      ( 16 )   1999

  555. Effects of Radiation Transport in Detached Recombining Plasmas Reviewed

      ( 16 )   1999

  556. Dependence of Radial Electric Field on Neutral pressure Related to Ion Heating in NAGDIS-II Device Reviewed

    WHYTE D G

      ( 16 )   1999

  557. Structures of Detached Plasmas with High Heat Flow in a Strong Magnetic Field Reviewed

    ニシジマ ダイスケ, エズミ ナオミチ, アオキ コウジ, オオノ ノリヤス*, タカムラ シュウイチ**

    東北大学研究所報告. (工学), 流体科学研究所   Vol. 10   page: 157 - 166   1998.3

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    Language:English   Publishing type:Research paper (bulletin of university, research institution)   Publisher:東北大学  

  558. *Experimental Evidence of Molecular Activated Recombination in Detached Recombining Plasmas Reviewed

    N.Ohno, N.Ezumi, S.Takamura, S.I.Krasheninnikov, A.Yu.Pigarov

    Physical Review Letters   Vol. 81 ( 4 ) page: 818-821   1998

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  559. Numerical Simulation on Structure of Detached Helium Plasmas with Hydrogen and Helium Gas Puff in NAGDIS-II Reviewed

    D.Nishijima, N.Ezumi, K.Aoki, N.Ohno, S.Takamura

    Contributions to Plasma Physics   Vol. 38 ( 1/2 ) page: 55-60   1998

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  560. Enhancement of plasma heat flow to the conductive divertor plate associated with cross-field potential variation and thermoelectron emission Reviewed

    T.Kuwabara, K.Kudose, M.Y.Ye, N.Ohno, S.Takamura

    Contributions to Plasma Physics   Vol. 38 ( 1-2 ) page: 349-354   1998

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  561. Static and Dynamic Erosion Behavior of TiC Coated Graphite in High Heat Flux Plasma Reviewed

    S.Takamura, K.Hayashi, N.Ohno, K.Morita

    Journal of Nuclear Materials   Vol. 258-263   page: 961-966   1998

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  562. Confinement and Structure of Electrostatically Coupled Dust Clouds in a Direct Current Plasma-Sheath Reviewed

    S.Nunomura, N.Ohno, S.Takamura

    Physics of Plasmas   Vol. 5   page: 3517-3523   1998

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  563. Heat Flow through Plasma Sheaths Reviewed

    S.Takamura, M.Y.Ye, T.Kuwabara, N.Ohno

    Physics of Plasma   Vol. 6 ( 6 ) page: 2151-2158   1998

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  564. Anomaly of Langmuir Probe Characteristics in Detached Recombining Plasma Reviewed

    N.Ezumi, N.Ohno, K.Aoki, D.Nishijima, S.Takamura

    Contributions to Plasma Physics   Vol. 38 ( S ) page: 31-37   1998

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  565. Particle simulation on multiple dust layers of coulomb cloud in cathode sheath edge Reviewed

    K.Asano, S.Nunomura, T.Misawa, N.Ohno, S.Takamura

    Czechoslovak Journal of Physics   Vol. 48   page: 239-244   1998

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  566. Simulation and experiment on detached plasmas in the linear divertor simulator NAGDIS-(]G0002[) Reviewed

    N.Ohno, N.Ezumi, D.Nishijima, S.Takamura

    Czechoslovak Journal of Physics   Vol. 48   page: 127-136   1998

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  567. Erosion Characteristics of High-Temperature Metal-Carbon Composite Materials under High-Flux Plasma Irradiation

    N.Ohno, S.Takamura

    Proc. of Japan/US Workshop(98FT5-01) on High Heat Flux Components and Plasma Surface Interactions for Next Fusion Devices, Toki, Japan, 1998     page: 474-483   1998

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  568. Deposition of TiN Thin Films with Strongly Ionized Plasmas in high Duty AC Tokamak Discharge

    M.Y.Ye, O.Matsuda, N.Ohno, M.Takagi, Y.Uesugi, S.Takamura

    Proc. of 1998 International Congress on Plasma Physics combined with 25th EPS Conference on Controlled Fusion and Plasma Physics, Praga, Czech     page: 2509-2512   1998

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  569. Observation of Trapping and Fluctuation of a Dust Could at a Very Low Gas Pressure

    S.Nunomura, T.Misawa, K.Asano, N.Ohno, S.Takamura

    Proc. of 1998 International Congress on Plasma Physics combined with 25th EPS Conference on Controlled Fusion and Plasma Physics, Praga, Czech     page: 114-117   1998

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  570. Change in Detached Helium Plasma's Structure Associated with Molecular Activated Recombination

    D.Nishijima, N.Ezumi, H.Kojima, N.Ohno, S.Takamura

    Proc. of 1998 International Congress on Plasma Physics combined with 25th EPS Conference on Controlled Fusion and Plasma Physics, Praga, Czech     page: 23-26   1998

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  571. Space-Charge Limited Emission Current from Material Surface in a Plasma

    Y.M.Ye, T.Shimada, T.Kuwabara, N.Onno, S.Takamura

    Proc. of 1998 International Congress on Plasma Physics combined with 25th EPS Conference on Controlled Fusion and Plasma Physics, Praga, Czech     page: 7-10   1998

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  572. Observation of Funnel-Shaped Dust Cloud Composed of Multiple Layers Reviewed

    MISAWA T., NUNOMURA S., ASANO K., OHNO N., TAKAMURA S.

    Meeting Abstracts of the Physical Society of Japan   Vol. 53 ( 0 )   1998

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    DOI: 10.11316/jpsgaiyo.53.1.4.0_811_1

  573. Experimental evidence of molecular activated recombination in detached recombining plasmas Reviewed International coauthorship International journal

    Ohno N., Ezumi N., Takamura S., Krasheninnikov S.I., Pigarov A.Y.

    Physical Review Letters   Vol. 81 ( 4 ) page: 818 - 821   1998

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    Molecular activated recombination (MAR) has been clearly observed for the first time in a divertor plasma simulator. A small amount of hydrogen gas puffing into a helium plasma strongly reduced the ion particle flux along the magnetic field, although the conventional radiative and three-body recombination processes were quenched. Careful comparison of the observed helium Balmer spectra with collisional radiative atomic and molecular data indicates that the population distribution over the atomic levels with relatively low principal quantum numbers can be well explained by taking the MAR effects into account. © 1998 The American Physical Society.

    DOI: 10.1103/PhysRevLett.81.818

    Scopus

  574. Erosion and Redeposition Processes of Molybdenum with Oblique Incidence of Magnetic Field Reviewed

    小島 昌博, 井戸 康広, 江角 直道, OHNO Noriyasu, TAKAMURA Shuichi

    プラズマ・核融合学会誌 = Journal of plasma and fusion research   Vol. 73 ( 4 ) page: 452 - 459   1997.4

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    Erosion and redeposition processes have been investigated using a linear plasma device and a Monte Carlo simulation code. Argon plasmas were irradiated on a molybdenum substrate with an oblique incidence of magnetic field. The erosion distributions depending on the direction of magnetic field are clearly observed. Numerical code analysis gives a qualitative explanation for the erosion profiles by considering the effect of prompt redeposition of high Z material. However, we have still quantitative differences for their erosion and redeposition rates.

  575. Effects of ion flow by ExB drift on dust particle behavior in magnetized cylindrical electron cyclotron resonance plasmas Reviewed International journal

    Nunomura S, Ohno N, Takamura S

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS   Vol. 36 ( 2 ) page: 877 - 883   1997.2

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  576. Effects of Ion Flow by E * B Drift on Dust Particle Behavior in Magnetized Cylindrical Electron Cyclotron Resonance Plasmas.

    Nunomura Shota, Ohno Noriyasu, Takamura Shuichi

    Japanese Journal of Applied Physics   Vol. 36 ( 2 ) page: 877 - 883   1997

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    Interactions between poloidal ion flow associated with E× B drift and dust particles have been investigated in magnetized cylindrical electron cyclotron resonance plasmas, in which radial electric field is controlled by a biased ring-shaped electrode. The dust particles are spun out and removed from the plasma due to poloidal ion drag force, even when the inward electric force on the dust particles is larger than the gravitational force. This indicates the possibility of using a new method to remove the dust particles from the processing plasma. On the other hand, in order to sustain the dust particles in the plasma, the effects of this poloidal ion flow should be substantially reduced by the friction between the dust particles and neutral gas.

    DOI: 10.1143/jjap.36.877

    CiNii Research

  577. Density threshold for plasma detachment in gas target Reviewed

    N.Ezumi, S.Mori, N.Ohno, S.Takamura, H.Suzuki, J.Park

    Journal of Nuclear Materials   Vol. 241-243   page: 349-352   1997

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  578. Study of hot tungsten emissive plate in high heat flux plasma on NAGDIS-I Reviewed

    M.Y.Ye, N.Ohno, S.Takamura

    Journal of Nuclear Materials   Vol. 241-243   page: 349-352   1997

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  579. Observation of the Structure and its Formation Process of a New Volumetric Coulomb Cloud Composed of Different Multiple Dust Layers Reviewed

    S.Nunomura, N.Ohno, S.Takamura

    Japan Journal of Applied Physics   Vol. 36   page: L949-951   1997

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  580. Effects of Ion Flow by 丑X(]G1388[) Drift on Dust Particle Behaviour in Magnetizat Cylindrical Electron Cyclotron Reviewed

    S.Nunomura, N.Ohno, S.Takamura

    Japan Journal of Applied Physics   Vol. 36   page: 877-883   1997

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  581. 講座「プラズマにおけるカオス現象の観測と実験解析II」3.シースに関連したカオス3 2.準周期ルート

    大野哲靖

    プラズマ・核融合学会誌   Vol. 73 ( 8 ) page: 827-833   1997

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  582. Numerical Analysis on Fine Particle's Behavior in an Ion-Beam Plasma System

    N.Ohno, M.Nakamura, S.Nunomura, S.Takamura

    Proc. of 23th Inernational Conference on Phenomena in Ionized Gases, Toulouse, France 1997     page: 196-197   1997

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  583. Full AC Tokamak Discharge in A Small Research Device CSTN-AC

    S.Takamura, K.Hayashi, Y.Marushita, K.Tashiro, Y.Uesugi, N.Ohno, K.Sakurai, M.Kobayashi, M.Takagi, O.Mitarai

    Proc. of 20th EPS Conference on Controlled Fusion and Plasma Physics, Bercgtesgardenm Germany, 1997     page: 1225-1228   1997

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  584. Studies on Plasma-Gas Interactions in Powerful High Heat Flux Plasma Device NAGDIS-II

    N.Ezumi, N.Ohno, Y.Uesugi, J.Park, S.Watanabe, S.A.Cohen, S.Krasheninnikov, A.Yu. Pigarov, M.Takagi, S.Takamura

    Proc. of 20th EPS Conference on Controlled Fusion and Plasma Physics, Bercgtesgardenm Germany, 1997     page: 1225-1228   1997

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  585. Structure of Detached Plasmas with High Heat Flow in a Strong Magnetic Field

    D.Nishijima, N.Ezumi, K.Aoki, N.Ohno, S.Takamura

    International Symposium on Plasma and Flow Simulation for Materials Processing, Sendai, Japan, 1997, Reports of the Institute of Fluid Science Tohoku University   Vol. 10   page: 157-166   1997

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  586. 講座「プラズマにおけるカオス現象の観測と実験解析I」2.プラズマにおけるカオス 2.2カオスの解析手法

    大野哲靖

    プラズマ・核融合学会誌   Vol. 73 ( 7 ) page: 682-687   1997

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  587. Plasma Heat FLow through Plasma Sheath with Electron Emission and Plasma Poe\tental Variation across Magnetic Field

    M.Y.Ye, K.Kudose, T.Kuwabara, N.Ohno, S.Takamura

    7th Asia Pacific Physics Conference, Beijing, China, 1997   Vol. 1   1997

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  588. Static and Dynamic Erosion Behavior of TiC Coated Graphite in High Heat Flux Plasma

    S.Takamura, K.Hayashi, N.Ohno, K.Morita

    8th International Conference on Fusion Reactor Materials, Sendai, Japan, 1997   Vol. 1   1997

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  589. Structure and Dynamic Behavior of a Coulomb Cloud Composed of Different Multiple Dust Layers

    S.Nunomura, T.Misawa, K.Asano, N.Ohno, S.Takamura

    39th Annual Meeting fo the Division of Plasma Physics of the American Physical Society, Pittsburgh, USA, 1997   Vol. 1   1997

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  590. Heat Flows through Plasma Sheaths

    S.Takamura, M.Y.Ye, T.Kuwabara, N.Ohno

    39th Annual Meeting of the Division of Plasma Physics of the American Physical Society, Pittsburgh, USA, 1997   Vol. 1   1997

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  591. Suppression of secondary electron emission from the material surfaces with grazing incident magnetic field in the plasma Reviewed International journal

    Takamura S, Mizoshita S, Ohno N

    PHYSICS OF PLASMAS   Vol. 3 ( 12 ) page: 4310 - 4312   1996.12

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  592. Nonlinear interactions between high heat flux plasma and electron-emissive hot material surface Reviewed International journal

    Ye MY, Masuzaki S, Shiraishi K, Takamura S, Ohno N

    PHYSICS OF PLASMAS   Vol. 3 ( 1 ) page: 281 - 292   1996.1

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  593. Particle in Cell Simulation on Thermoelectron Emission from Hot Target Plate Reviewed

    N.Ohno, E.Shimizu, S.Takamura

    Contributions to Plasma Physics   Vol. 36 ( 2-3 ) page: 386-390   1996

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  594. Suppression of Secondary Electron Emission From the Material Surfaces with Grazing Incident Magnetic Field in th Plasma Reviewed

    S.Takamura, S.Mizoshita, N.Ohno

    Physics of Plasma   Vol. 3 ( 12 ) page: 4310-4312   1996

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  595. Numerical Simulation Study on Density Dependence of Plasma Detachment in Simulated Gas Divertor Experiments of The TPD-I Device Reviewed

    N.Ohno, S.Mori, N.Ezumi, M.Takagi, S.Takamura, H.Suzuki

    Contributions to Plasma Physics   Vol. 36 ( 2-3 ) page: 339-343   1996

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  596. Characterization of gaseous carbon plasma in a low-temperature tokamak discharge Reviewed

    O.Matsuda, N.Ohno, S.Takamura

    Plasma Source Science and Technology   Vol. 5   page: 356-362   1996

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  597. Static and Dynamic Characteristics of Plasma Detachment in Gas Target Scheme

    N.Ezumi, M.Tanaka, S.Mori, N.Ohno, M.Takagi, S.Takamura, H.Suzuki

    Proc. of the 1996 International Conference on Plasma Physics, Nagoya, Japan     page: 614-617   1996

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  598. Control of Dust Particles' Behavior by Using Ion Flow

    S.Nunomura, M.Nakamura, N.Ohno, S.Takamura

    International Conference on the Physics of Dusty Plasmas, Goa, India, 1996, "Advances in Dusty Plasmas" ed. by PO.K.Shukla, D.A Mendis and T.Desai, World Scientific Publishing Co., Singapore   Vol. 1   1996

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  599. Generation of Dustyt Plasma in a Double-Plasma Device

    M.Nakamura, S.Nunomura, H.K.Malik, N.Ohno, S.Takamura

    Proc. of the 1996 International Conference on Plasma Physics, Naoya Japan     page: 1982-1985   1996

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  600. Characterization of Gaseous Carbon Plasma in a Low-Temperature Tokamak Discharge as Processing Plasma

    O.Matsuda, N.Ohno, S.Takamura

    Proc. of the 1996 International Conference on Plasma Physics, Naoya Japan     page: 1814-1817   1996

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  601. Impurtity Generation, Transport and Redeposition at Plasma Boundary

    M.Kojima, Y.Ido, N.Ezumi, N.Ohno, S.Takamura

    Proc. of the 1996 International Conference on Plasma Physics, Naoya Japan     page: 1402-1405   1996

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  602. Physical Mechanism of Plasma Heat Flow into Electron-Emissive Hot Material Surface

    M.Y.Ye, T.Kuwabara, N.Ohno, S.Takamura

    Proc. of the 1996 International Conference on Plasma Physics, Naoya Japan     page: 1398-1401   1996

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  603. Plasma Heat Contraction on Conducting Plate due to Plasma Potential Variation across the Magnetic Field

    T.Kuwabara, K.Kudose, M.Y.Ye, N.Ohno, S.Takamura

    Proc. of the 1996 International Conference on Plasma Physics, Naoya Japan     page: 1386-1389   1996

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  604. High Heat Flux Plasma Generator for New Divertor Plasma Simulator in Nagoya University

    S.Narita, N.Ezumi, N.Ohno, Y.Uesugi, S.Takamura

    Proc. of the 1996 International Conference on Plasma Physics, Naoya Japan     page: 1362-1365   1996

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  605. Comprehensive Studies on Secondary Electron Emission from Material Surface in Magnetized Plasma

    S.Takamura, S.Mizoshita, K.Shiraishi, N.Ohno

    Proc. of the 1996 International Conference on Plasma Physics, Nagoya, Japan     page: 610-613   1996

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  606. Temperature Dependence of Ti Sputtering Yield from TiC Composite Material under High Heat Flux Plasma Irradiation

    K.Hayashi, N.Ohno, S.Takamura, K.Morita

    Proc. of the 1996 International Conference on Plasma Physics, Nagoya, Japan     page: 1410-1413   1996

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  607. Full AC Plasma Current Operation in the CSTN-AC Tokamak

    K.Hayashi, Y.Marushita, K.Tashiro, N.Ohno, S.Takamura, O.Mitarai, K.Sakurai, S.Satoh T.Kuwabara

    Proc. of the 1996 International Conference on Plasma Physics, Nagoya, Japan     page: 1246-1249   1996

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  608. 1P-YM-5 Effect of Plasma Flow on Transport of Fine Particles Reviewed

    Nunomura S., Nakamura M., Ohno N., Takamura S.

    Meeting Abstracts of the Physical Society of Japan   Vol. 51 ( 0 )   1996

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    DOI: 10.11316/jpsgaiyog.51.4.0_189_2

  609. 電界制御による微粒子プラズマの生成 Reviewed

    布村 正太, 古橋 一能, 大野 哲靖, 高村 秀一

    電気学会研究会資料. EP, プラズマ研究会   Vol. 1995 ( 31 ) page: 51 - 58   1995.5

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  610. Reduction of Plasma heat flow to a simulated divertor target plate by ponderomotive force Reviewed

    S.Masuzaki, N.Ohno, S.Takamura

    Journal of Nuclear Materials   Vol. 220-222   page: 1112-1115   1995

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  611. Gas target experiments high heat flux plasma of the TPD-I device Reviewed

    N.Ohno, S.Masuzaki, M.Takagi, S.Takamura, K.Ishii

    Journal of nuclear materials   Vol. 220-222   page: 279-283   1995

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  612. Heat Transport and Associated Surface Phenomena at the Plasma-Material Interface in Heat and Mass Transfer under Plasma Condition

    S.Takamura, N.Ohno

    Begell House, Inc.,     page: 245-252   1995

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  613. Experimental Study on Plasma Heat Flow to Plasma Facing Materials Reviewed

    S.Masuzaki, N.Ohno, S.Takamura

    Journal of Nuclear Materials   Vol. 223   page: 173-178   1995

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  614. Monte Carlo Simulation on Active Helium-Ash Exhaust by Divertor Biasing Reviewed

    T.Kuwabara, M.Kojima, N.Ohno, Y.Uesugi, S.Takamura, Y.Yamamura

    Journal of Nuclear Materials   Vol. 220-222   page: 1001-1004   1995

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  615. Secondary electron emission from solid surface in an oblique magnetic field Reviewed

    S.Mizoshita, K.Shiraishi, N.Ohno, S.Takamura

    Journal of Nuclear Materials   Vol. 220-222   page: 488-492   1995

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  616. Heat Transport and Associated Surface Phenomena at the Plasma-Material Interface Reviewed

    S.Takamura, N.Ohno

    "Heat and Mass Transfer under Plasma Condition" ed by P. Fan chais, M. Boubs and J. Vander Mullen, Begell House     page: 245-251   1995

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  617. Sensitive Detection of Probing Electron Transport and Magnetic Field Structure in Toroidal Plasma Configuration Reviewed

    S.Sakurai, N.Ohno, S.Takamura

    Japanese Journal of Applied Physics   Vol. 33 ( 2 ) page: 1161-1168   1994

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  618. Detection of Electron Beam Orbits in a Tokamak Configuration with External Helical Magnetic Field Reviewed

    S.Sakurai, N.Ohno, S.Takamura

    Journal of Plasma and Fusion Research   Vol. 70 ( 2 ) page: 173-178   1994

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  619. Gas Target Experiments in High Heat Flux Plasma of the TPD-I Device

    N.Ohno, S.Masuzaki, S.Mori, N.Ezumi, M.Takagi, S.Takamura

    36th Annual Meeting APS Division of Plasma Physics, Minneapolis, USA   Vol. 1994   1994

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  620. Dynamic CT System for Visible Light Emission from Tokamak Plasma with Charge Coupled Detectors Reviewed

    Oda Yoshihiro, Takamura Shuichi, Uesugi Yoshihiko, Ohno Noriyasu

    Journal of plasma and fusion research   Vol. 69 ( 3 ) page: p250 - 257   1993.3

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    A tomographic reconstruction system with five channels for visible light emission has been developed and applied to observe the visible light emission from HYBTOK-II tokamak plasma. A compact and low cost computed tomography (CT) system with a good spatial and time resolution was established using an array of charge coupled devices. The shuttering capability of the CT system is 300 μs. A rapid change of the emission profile due to the deviation from the tokamak equilibrium was successfully followed. Present CT system with five CCD cameras enables us to recognize a local increment of the visible light emission due to the plasma arcing, which is difficult to observe with the conventional three camera CT system, which is often employed for fusion plasma diagnostics.

  621. Gaseous Silicon Plasma Generated by a Low-Temperature Tokamak Discharge Reviewed

    Hiramatsu Kenji, Takamura Shuichi, Ohno Noriyasu

    Journal of plasma and fusion research   Vol. 69 ( 2 ) page: p121 - 128   1993.2

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  622. Dynamical CT System for visible Light Emission From Tokamak Plasma with Charge Coupled Defectors Reviewed

    Y.Oda, Y.Uesugi, S.Takamura, N.Ohno

    Journal of Plasma and Fusion Research   Vol. 69 ( 3 ) page: 250-257   1993

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  623. Sheath Voltage on Carbon Surface in a Hydrogen Plasma with Hot Electrons Reviewed

    K.Shiraishi, N.Ohno, S.Takamura

    Journal of Plasma and Fusion Research   Vol. 69 ( 11 ) page: 1371-1377   1993

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  624. Chaotic Behavior Driven by an External Periodic Oscillation in a Current-Carrying Unstable Ion Sheath Reviewed

    N.Ohno, A.Komori, M.Kono, Y.Kawai

    Physics of Fluids B   Vol. 5 ( 3 ) page: 796-805   1993

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  625. Experimental and Theoretical Study on Plasma Heat Flow to Plasma Facing Materials

    S.Masuzaki, H.Konnno, N.Ohno, S.Takamura

    Proc. of 20th EPS Conference on Controlled Fusion and Plasma Physics, Lisboa   Vol. 743-746   1993

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  626. BIFURCATION PHENOMENA IN AN EMISSIVE PLATE - SIMULATED DIVERTOR PLASMA SYSTEM Reviewed

    TAKAMURA S, OHNO N, SHIRAISHI K, MASUZAKI S

    JOURNAL OF NUCLEAR MATERIALS   Vol. 196   page: 448 - 451   1992.12

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  627. SHEATH FORMATION ON CARBON AND REFRACTORY-METALS IN A PLASMA WITH ENERGETIC ELECTRONS Reviewed International journal

    SHIRAISHI K, OHNO N, UESUGI Y, TAKAMURA S

    JOURNAL OF NUCLEAR MATERIALS   Vol. 196   page: 745 - 749   1992.12

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  628. INTERMITTENCY DURING TRANSITION BETWEEN STATIONARY AND PERIODIC STATES IN PLASMAS Reviewed International journal

    KOMORI A, OHNO N, YAMAURA T, KAWAI Y

    PHYSICS LETTERS A   Vol. 170 ( 6 ) page: 439 - 442   1992.11

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  629. Sheath Formation on Carbon and and Refractory Metals in a Plasma with Energetic Electrons Reviewed

    K.Shiraishi, N.Ohno, Y.Uesugi, S.Takamura

    Journal of Nuclear Materials   Vol. 196-198   page: 745-749   1992

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  630. Bifurcation Phencomena in an Emissive Plate-Simulated Divertor Plasma System Reviewed

    S.Takamura, N.Ohno, K.Shiraishi, S.Masuzaki

    Journal of Nuclear Materials   Vol. 196-198   page: 448-451   1992

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  631. Gaseous Silicon Plasma Generated by a Low-Temperatue Tokamak Discharge Reviewed

    K.Hiramatsu, N.Ohno, S.Takamura

    Jouranl of Plasma and Fusion Research   Vol. 69 ( 2 ) page: 121-128   1992

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  632. Studies on Sheath Formation in Divertor Plasmas by Computer Simulation Using Particle Reviewed

    N.Ohno, S.Masuzaki, H.Konno, S.Takamura

    Contributions to Plasma Physics   Vol. 3 ( 3-4 ) page: 249-354   1992

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  633. 高熱流プラズマの生成とその高速掃引プローブ計測システムによる計測 Reviewed

    増崎貴、大野哲靖、高木誠、高村秀一

    電気学会論文誌A   Vol. 112 ( 11 ) page: 913-921   1992

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  634. Intermittency During Transition Between Stationary and Periodic States of Plasmas Reviewed

    A.Komori, N.Ohno, T.Yamaura, Y.Kawai

    Physics Letter A   Vol. 170 ( 6 ) page: 439-442   1992

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  635. Numerical Study of Potential Formation and Negative Resistance in a Currnet Carrying Ion Sheath

    N.Ohno, A.Komori, Y.Kawai, S.Takamura

    Proc. of 1992 International Conference on Plasma Physics, Innsbruck, Austria     page: 1807-1810   1992

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  636. 26p-C-7 A quasiperiodic route to chaos observed in an ion sheath Reviewed

    Komori A, Ohno N, Kono M, Tanaka M, Kawai Y

    Meeting Abstracts of the Physical Society of Japan   Vol. 1992 ( 0 )   1992

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    Publisher:The Physical Society of Japan  

    DOI: 10.11316/jpsgaiyok.1992.4.0_175_2

  637. Averaging effect of radical particle profile by the scanning plasma method in SiH<inf>4</inf>Ar plasmas Reviewed International journal

    Fujiyama H., Kawasaki H., Matsuda Y., Ohno N.

    Materials Science and Engineering A   Vol. 140 ( C ) page: 569 - 575   1991.7

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    A new plasma-enhanced chemical vapour deposition (PECVD) method has been developed for preparation of large-area uniform hydrogenated amorphous silicon (aSi:H) thin films. Detailed two-dimensional profiles of both charged particles and radical particles have been measured in magnetized multielectrode glow discharge plasmas in 10% SiH4Ar gas. The detailed profiles of SiH* and Ar I emissions had two peaks in the negative glow and cathode sheath regions but, for Hα emission, only one peak was observed in the cathode sheath region. It was verified that large-area uniform profiles of not only plasmas but also SiH* emission could be realized in the presence of modulated crossed magnetic and electric fields. By using this scanning plasma method (SPM), inhomogeneities for both profiles of plasma and SiH* (413.5 nm) emission intensity have improved to less than 2.5% near the substrate outside the discharge region. The thickness profile of prepared a-Si:H thin film has also been unified to less than 4.8% by SPM. © 1991.

    DOI: 10.1016/0921-5093(91)90480-B

    Scopus

  638. INSTABILITIES ASSOCIATED WITH A NEGATIVE RF RESISTANCE IN CURRENT-CARRYING ION SHEATHS Reviewed International journal

    OHNO N, KOMORI A, TANAKA M, KAWAI Y

    PHYSICS OF FLUIDS B-PLASMA PHYSICS   Vol. 3 ( 1 ) page: 228 - 235   1991.1

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    Web of Science

  639. 短ギャップ同軸型マイクロ波放電の放電開始条件に及ぼす磁界の影響 Reviewed

    重水哲郎、大野哲靖、藤山寛

    電気学会論文誌A   Vol. 111 ( 8 ) page: 727-732   1991

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  640. Instabilities associated with a negative of resistance in current-Carrying ion sheaths Reviewed

    N.Ohno, A.Komori, M.Tanaka, Y.Kawai

    Physics of Fluids   Vol. B3 ( 1 ) page: 228-235   1991

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  641. Characteristics of ECR Plasmas for Weakly resonant conditions Reviewed

    M.Saigoh, N.Ohno, H.Fujiyama

    Material Science and Engineering   Vol. A139   page: 307-311   1991

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  642. ボックスカー撮像法によるプラズマ中磁力線構造可視化システム

    櫻井真治、大野哲靖、高村秀一

    第6回産業における画像センシング技術シンポジウム講演論文集     page: 177-182   1991

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  643. Averaging Effect of Radical Profile by the Scanning Plasma Method in S : H4-Ar Plasma Reviewed

    H.Kawasaki, N.Ohno, Y.Matsuda, H.Fujiyama

    Material Science and Engineering   Vol. A140   page: 569-575   1991

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  644. Development of Coaxial ECR Plasma Source for tube inner coating Reviewed

    T.Shigemizu, N.Ohno, H.Fujiyama

    Material Science and Engineering   Vol. A139   page: 312-318   1991

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  645. Effect of Magnetic Field on Gaseous Breakdown Conditions of Narrow-Gap Coaxial-type Microwave Discharge Reviewed

    Shigemizu Tetsuro, Ohno Noriyasu, Fujiyama Hiroshi

    IEEJ Transactions on Fundamentals and Materials   Vol. 111 ( 8 ) page: 727 - 732   1991

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    The gaseous breakdown conditions by the microwave field were theoretically and experimentally investigated in the presence of an external crossed magnetic field. We developed the calculating method by taking account of collisions between electrons and neutral gases, and electron losses to a boundary in the magnetic field to be able to calculate the breakdown voltages in a low gas pressure range from 1&times;10<sup>-4</sup> to 1&times;10<sup>-2</sup>Torr. These calculated results are in good agreement with experimental ones. In the narrow-gap less than the wavelength of the microwave, both the magnetic field and the electron loss to the boundary play an important role for the breakdown condition. Coaxial-type electron cyclotron resonance (ECR) plasmas can be generated in a metal coaxial tube with a gap length of 4.5mm gap.

    DOI: 10.1541/ieejfms1990.111.8_727

  646. Chaotic Behavior of Current -Carrying Plasmas in External Periodic Oscillations Reviewed

    N.Ohno, A.Komori, M.Tanaka, Y.Kawai

    Journal of Physical Society of Japan   Vol. 58 ( 1 ) page: 28-31   1989

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  647. Instatbilities Associated with Chaotic Behavior in a Current-Carrying Plasma

    A.Komori, N.Ohno, M.Tanaka, Y.Kawai

    Proc. of 1989 International Conference on Plasma Physics, New Delhi, India     page: 801-804   1989

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  648. Chaotic Behavior due to Wave-Wave Interaction in a Modulated Ion Beam-Plasma System

    K.Araki, M.Saigoh, N.Ohno, H.Fujiyama, M.Nambu, H.Honjo

    Proc. of 1989 International Conference on Plasma Physics, New Delhi, India     page: 789-793   1989

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  649. イオンビームプラズマ系におけるサブハーモニックスの励起機構の研究

    大野哲靖、粕谷俊郎、田中雅慶、小森彰夫、河合良信

    九州大学総合理工学研究科報告   Vol. 9 ( 1 )   1987

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  650. Observation of Subharmonic Waves in an Ion Beam-Plasma System

    N.Ohno, T.Kasuya, A.Komori, Y.Kawai

    Proc. of International Conference on Phenomena in Ionized Gases, Swansea, England, 1987     page: 270-271   1987

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Books 1

  1. 電磁気学ビギナーズ講義

    大野 哲靖, 松村 年郎, 内山 剛, 横水 康伸, 天野 浩

    培風館  2018  ( ISBN:9784563025212

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MISC 81

  1. 3.非接触プラズマと熱・粒子処理に関するダイバータ実験研究 およびモデリングの現状と研究開発課題 Reviewed

    大野 哲靖

    J. Plasma Fusion Res.   Vol. 92   page: 877 - 881   2016

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    CiNii Research

  2. Nanostructure Formation on Refractory Metal Surfaces Irradiated by Helium Plasmas

    Takamura Shuichi, Kajita Shin, Ohno Noriyasu

    Butsuri   Vol. 68 ( 9 ) page: 602 - 611   2013.9

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    Helium defects on plasma-facing refractory metals like tungsten have been studied in fusion sciences from the view point of the effects on metal surface properties, concentrating on the bubble formation. However, the surface morphology over the lower surface temperature range was found recently to be changed drastically, something like cotton down or arborescence, sometimes called as "fuzz". The formation process, although still open problem, would be discussed in terms of viscoelastic model with the effect of surface tension, taking account of its thermal properties and nano-bubbles inside the thin fibers. Some physical surface characteristics like electron emission, radiation emissivity and sputtering are quite influenced by its forest-like structure. Unipolar arcing has been newly studied by using such a surface structure which makes its initiation controllable. In the present report, other examples of nanostructure formation in a variety of particle incident conditions have been introduced as well as the possibility of its industrial applications to enhance interdisciplinary interests.

    DOI: 10.11316/butsuri.68.9_602

    CiNii Research

  3. Merging Plasma Science into Combustion Science ― Plasma-Assisted Combustion ―

    SASAKI Koichi, UESUGI Yoshihiko, OHNO Noriyasu, OSAKA Yugo

    Journal of the Combustion Society of Japan   Vol. 51 ( 158 ) page: 259 - 267   2009

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    <p>Recently, plasma-assisted combustion attracts much attention of many researchers as a new interdisciplinary field between combustion and plasma sciences. In this article, we describe a brief explanation of various plasmas, concepts of plasma-assisted combustion, and the research trend of plasma-assisted combustion. We also report examples of experimental investigation on plasma-assisted combustion, which have been carried out in authors' research groups.</p>

    DOI: 10.20619/jcombsj.51.158_259

    CiNii Research

  4. 核融合プラズマと プラズマプロセッシングの橋渡

    大野 哲靖, 高村 秀一

    プラズマ・核融合学会誌   Vol. Vol.84   page: 740 - 749   2008

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  5. JT-60U周辺プラズマ中の間欠的揺動と非拡散的プラズマ輸送

    大野 哲靖, 朝倉 伸幸, 高村 秀一

    第22回プラズマ・核融合学会年会 シンポジウムIII「核融合プラズマにおける周辺プラズマ揺動の物理と観測」     2004

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    CiNii Research

  6. Erratum:"Blob- and hole-like structures outstanding during the transition from attached to detached divertor states in GAMMA 10/PDX Physics of Plasmas" Reviewed

    H.Tanaka, M.Sakamoto, N.Ezumi, K.Nojiri, A.Terakado, T.Mikami, Y.Kinoshita, K.Kobayashi, M.Yoshikawa, J.Kohagura, N.Ohno

    Physics of Plasmas   Vol. 28 ( 2 ) page: 29901   2021

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    DOI: 10.1063/5.0045722

  7. プラズマ科学がもたらす新しい世界-核融合理工学技術のスピンオフー

    柳長門、竹入康彦、大野哲靖、梶田信

    電気評論   Vol. 104 ( 5 ) page: 67 - 71   2019.5

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  8. 核融合分野における人材育成ー大学における核融合理工学教育ー

    大野哲靖

    電気評論   Vol. 104 ( 5 ) page: 72 - 76   2019.5

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  9. Effect of Damage Introduction and He Existence on D Retention in Tungsten by High Flux D Plasma Exposure

    Yasuhisa Oya, Keisuke Azuma, Akihiro Togari, Moeko Nakata, Qilai Zhou, Mingzhong Zhao, Tatsuya Kuwabara, Noriyasu Ohno, Miyuki Yajima, Yuji Hatano, Takeshi Toyama

    Lecture Notes in Networks and Systems   Vol. 53   page: 89 - 96   2019.1

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    © 2019, Springer Nature Switzerland AG. Both of radiation-induced damages and helium (He) existence effects on deuterium (D) retention in tungsten (W) by D plasma exposure were evaluated using high flux divertor plasma exposure device, called Compact Divertor Plasma Simulator (CDPS). The results were compared with 3 keV D 2+ implanted W with low flux and fluence. The thermal desorption spectra were consisted of three desorption stages at 400, 600, 780 K. Comparing to the undamaged W, the D desorption stages were shifted towards higher temperature side and the values of D retention increased. It can be said that the formation of stable trapping sites by damage introduction enhances the D trapping in the damaged W. For He + irradiation, D desorption at lower temperature was enhanced, due to the formation of dense dislocation loops. In case of sequential Fe 2+ and He + implantation, D desorption at higher temperature was reduced, comparing to that for only Fe 2+ damaged W. These facts show that the accumulation of He near surface region reduces D diffusion toward bulk, leading to the reduction of D trapping by voids.

    DOI: 10.1007/978-3-319-99834-3_12

    Scopus

  10. ヘリウムプラズマ照射を用いた酸化チタン薄膜光触媒のエチレン分解反応

    富田雄大, 梶田信, 吉田朋子, 安永円理子, 大野哲靖, 田中宏彦

    触媒討論会討論会A予稿集   Vol. 122nd   page: 104   2018.9

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    J-GLOBAL

  11. 様々な金属へのヘリウムプラズマ照射による表面構造変化

    野嶋智宏, 梶田信, 吉田直亮, 大野哲靖, 田中宏彦, 時谷政行, 永田大介

    日本金属学会講演概要(CD-ROM)   Vol. 163rd   page: ROMBUNNO.P66   2018.9

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    J-GLOBAL

  12. ヘリウムプラズマで誘起する金属表面の繊維状ナノ構造 6.タングステン繊維状ナノ構造を用いたミュオニウム生成

    薮内敦, 大野哲靖, 三宅康博, 池戸豊, 下村浩一郎, 西山樟生, 小嶋健児, 河村成肇, STRASSER Patrick, 藤森寛, 牧村俊助, 中村惇平, 齊藤直人, 三部勉, 大谷将士, 神田聡太郎, 西村昇一郎, 北村遼, 長嶋泰之, 鈴木卓爾, 長友傑

    プラズマ・核融合学会誌   Vol. 94 ( 6 ) page: 315‐319   2018.6

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    J-GLOBAL

  13. フラクタル構造を持つタングステンの光学応答のFDTDシミュレーション

    中村浩章, 中村浩章, 尾碕真志, 浅野恵吾, 梶田信, 大野哲靖, 羽田野直道

    日本物理学会講演概要集(CD-ROM)   Vol. 73 ( 1 ) page: ROMBUNNO.22pK501‐14   2018.3

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    J-GLOBAL

  14. 工学実証段階にきた核融合発電研究の現状と課題

    大野哲靖

    中部電力株式会社技術開発ニュース   ( 158 ) page: 3‐4   2018.2

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    J-GLOBAL

  15. Characterized divertor footprint profile modification with the edge pressure gradient in the Large Helical Device Reviewed

    H. Tanaka, S. Masuzaki, G. Kawamura, M. Kobayashi, Y. Suzuki, G. Motojima, T. Murase, T. Morisaki, N. Ohno, LHD Experiment Group

    Plasma Phys. Control. Fusion   Vol. 60   page: 125001   2018

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  16. Measurement of He neutral temperature in detached plasmas using laser absorption spectroscopy Reviewed

    M. Aramaki, T. Tsujihara, S. Kajita, H. Tanaka, N. Ohno

    AIP Advances   Vol. 8   page: 015308   2018

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  17. 非接触ダイバータプラズマ研究の進展

    大野哲靖

    プラズマ・核融合学会プラズマ若手夏の学校テキスト   Vol. 57th   page: (42)‐(49)   2018

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    J-GLOBAL

  18. High-temporal measurements of plasma-material interactions with a pulsed plasma in NAGDIS-PG

    T. Nakamori, S. Inagaki, N. Ohno, S. Kajita, H. Tanaka, Y. Kikuchi, T. Akiyama

        page: 22P-105   2017.11

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  19. He原子線強度比法を用いた非接触プラズマの電子温度・密度評価

    鈴木健介, 梶田信, 大嶋啓嗣, 大野哲靖, 田中宏彦, 秋山毅志

    電気学会基礎・材料・共通部門大会講演論文集(CD-ROM)   Vol. 2017   page: ROMBUNNO.19‐P‐16   2017.9

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    J-GLOBAL

  20. ヘリウム入射イオンエネルギーのパルス的変化がタングステンナノ構造成長に与える影響

    河口翔太, 梶田信, HWANGBO Dogyun, 大野哲靖, 田中宏彦, 増崎貴

    電気学会基礎・材料・共通部門大会講演論文集(CD-ROM)   Vol. 2017   page: ROMBUNNO.19‐P‐14   2017.9

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    J-GLOBAL

  21. 金属堆積層がタングステン材へのパルスプラズマ熱流流入過程に与える影響の解明

    稲垣翔平, 中森貴也, 大野哲靖, 梶田信, 田中宏彦, 菊池祐介, 秋山毅志

    電気学会基礎・材料・共通部門大会講演論文集(CD-ROM)   Vol. 2017   page: ROMBUNNO.19‐P‐11   2017.9

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    J-GLOBAL

  22. 小型トカマク装置HYBTOK‐IIにおける外部摂動磁場‐プラズマ相互作用とプラズマ流の関係

    吉本直哉, 柴田欣秀, 岡本征晃, 大野哲靖, 梶田信, 田中宏彦, 松永剛, 菊池祐介, 佐久間一行, 榊原悟, 渡邊清政

    電気学会基礎・材料・共通部門大会講演論文集(CD-ROM)   Vol. 2017   page: ROMBUNNO.19‐P‐7   2017.9

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    J-GLOBAL

  23. 不純物ガス雰囲気下におけるタングステン材の重水素吸蔵量のその場計測

    足立博昭, 大野哲靖, 梶田信, 桑原竜弥, 松波紀明, 本島厳

    電気学会基礎・材料・共通部門大会講演論文集(CD-ROM)   Vol. 2017   page: ROMBUNNO.19‐P‐6   2017.9

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    J-GLOBAL

  24. ヘリウムプラズマ照射によるナノニオブ作製とその光触媒活性評価

    三室文明, 梶田信, 大野哲靖, 吉田朋子

    触媒討論会討論会A予稿集   Vol. 120th   page: 100   2017.9

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    J-GLOBAL

  25. 重イオン照射タングステン中の重水素滞留挙動に及ぼす重水素プラズマ照射影響

    東奎介, 植村有希, 桜田翔大, 藤田啓恵, ZHOU Quilai, 吉田直亮, 外山健, 近藤創介, 檜木達也, 桑原竜弥, 大野哲靖, 近田拓未, 大矢恭久

    日本原子力学会春の年会予稿集(CD-ROM)   Vol. 2017   page: ROMBUNNO.2B03   2017.3

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  26. ポーラスタングステンのヘリウムプラズマ照射によるナノ構造化

    梶田信, 田中宏彦, 大野哲靖

    応用物理学会春季学術講演会講演予稿集(CD-ROM)   Vol. 64th   page: ROMBUNNO.16a‐315‐10   2017.3

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  27. プラズマ・中性子照射材相互作用研究のための小型高密度プラズマ発生装置の高性能化

    大野哲靖, 桑原竜弥, 高木誠, 矢嶋美幸, 足立博昭, 外山健

    東北大学金属材料研究所附属量子エネルギー材料科学国際研究センター共同利用研究経過報告書(CD-ROM)   Vol. 34   page: 52‐53   2017

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    J-GLOBAL

  28. 中性子照射タングステン中の照射欠陥生成・消滅とトリチウム滞留挙動の相関

    大矢恭久, 東奎介, 戸苅陽大, 矢嶋美幸, 桑原竜弥, 大野哲靖, 外山健

    東北大学金属材料研究所附属量子エネルギー材料科学国際研究センター共同利用研究経過報告書(CD-ROM)   Vol. 34   page: 38‐39   2017

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  29. 中性子とヘリウムの複合照射がプラズマ対向材料中の水素捕捉に及ぼす影響

    信太祐二, 桑原竜弥, 大野哲靖, 矢嶋美幸, LEE H. T, 鈴木克弥, 外山健

    東北大学金属材料研究所附属量子エネルギー材料科学国際研究センター共同利用研究経過報告書(CD-ROM)   Vol. 34   page: 40‐41   2017

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    J-GLOBAL

  30. ホットラボ用小型ダイバータプラズマ模擬試験装置を用いた照射損傷試料の重水素吸蔵に関する研究

    矢嶋美幸, 大野哲靖, 波多野雄治, 桑原竜弥, 外山健, 増崎貴, 大矢恭久, 時谷政行, 近藤創介

    東北大学金属材料研究所附属量子エネルギー材料科学国際研究センター共同利用研究経過報告書(CD-ROM)   Vol. 34   page: 54‐55   2017

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    J-GLOBAL

  31. Molecular dynamics for bursting of helium bubble on the tungsten bubble

    A. M. Ito, A. Takayama, S. Saito, N. Ohno, S. Kajita, H. Nakamura

    ANNUAL REPORT OF NIFS April 2013-March 2014     2014.11

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  32. 直線型プラズマ生成装置の現状とDEMOのダイバータ設計における課題 (小特集 DEMOに向けた直線型装置を用いた境界プラズマ,プラズマ・壁相互作用研究)

    坂本 瑞樹, 大野 哲靖, 朝倉 伸幸, 星野 一生

    プラズマ・核融合学会誌   Vol. 90 ( 8 ) page: 473 - 479   2014.8

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  33. プロジェクトレビュー 非平衡極限プラズマネットワーク構想 : プラズマ物理科学の新しい研究体制

    藤澤 彰英, 伊藤 公孝, 伊藤 早苗, 上杉 喜彦, 大野 哲靖, 金子 俊郎, 兒玉 了祐, 白谷 正治, 田中 和夫, 畠山 力三, 浜口 智志, 米田 仁紀

    プラズマ・核融合学会誌   Vol. 90 ( 3 ) page: 177 - 182   2014.3

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  34. イオンビームを用いたプラズマ照射下その場水素濃度計測 (小特集 放射線照射環境下における材料物性値のその場測定) -- (材料の物性値に対する放射線照射誘起効果)

    大野 哲靖, 松波 紀明

    プラズマ・核融合学会誌   Vol. 90 ( 1 ) page: 59 - 63   2014.1

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  35. 第一壁トリチウム・物質移行 (プロジェクトレビュー 日米科学技術協力事業TITANプロジェクト) -- (第一壁・ブランケットの物質熱輸送に関する研究)

    徳永 和俊, 宮本 光貴, 大塚 哲平, 梶田 信, 大野 哲靖, 上田 良夫

    プラズマ・核融合学会誌   Vol. 89 ( 11 ) page: 709 - 713   2013.11

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  36. ヘリウムプラズマ照射により高融点金属表面に形成されたナノ構造

    高村秀一、梶田信、大野哲靖

    日本物理学会誌   Vol. 68 ( 9 ) page: 602 - 611   2013.9

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  37. 核融合研究での微粒子 : 核融合プラズマ実験装置中での微粒子の生成と挙動の観測

    大野 哲靖, 朝倉 伸幸

    プラズマ・核融合学会誌   Vol. 87 ( 3 ) page: 153 - 159   2011.3

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  38. Introduction

    ITO Atsushi M., OHNO Noriyasu

      Vol. 86 ( 12 ) page: 679 - 680   2010.12

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  39. Formation mechanism of surface nano-structure in W by helium plasma bomberdment Reviewed

    Yoshida Naoaki, Yoshihara Reiko, Ohno Noriyasu, Kajita Shin

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan   Vol. 2010 ( 0 ) page: 957 - 957   2010

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    DOI: 10.11561/aesj.2010f.0.957.0

  40. Ad/absorption of tritium by nanostructure formed on tungsten Reviewed

    HATANO Yuji, SHI Jie, YAJIMA Miyuki, SAEKI Tsubasa, KAJITA Shin, OHNO Noriyasu

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan   Vol. 2010 ( 0 ) page: 917 - 917   2010

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    DOI: 10.11561/aesj.2010f.0.917.0

  41. 8.4 SOL Flow and Plasma Profiles in High-Field-Side SOL

    N.Asakura, T.Nakano, N.Ohno, H.Tanaka

    Review of JT-60U Experimental Results in 2007 and 2008   Vol. JAEA-Review 2009-045   page: 117 - 120   2010

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  42. 8.3 Fluctuation Characteristics in the Detached Divertor

    N.Asakura, N.Ohno, H.Tanaka, H.Kawashima, T.Nakano

    Review of JT-60U Experimental Results in 2007 and 2008   Vol. JAEA-Review 2009-045   page: 116   2010

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  43. 8.2 Fluctuation Characteristics of the L-mode and H-mode SOL Plasmas

    H.Tanaka, N.Ohno, N.Asakura, Y.Tsuji, H.Kawashima, S.Takamura, Y.Uesugi

    Review of JT-60U Experimental Results in 2007 and 2008   Vol. JAEA-Review 2009-045   page: 112 - 115   2010

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  44. 6.8 Study of Current Decay Time during Disruption in JT-60U Tokamak Review of JT-60U Experimental Results in 2007 and 2008

    Y.Shibata, M.Okamoto, K.Y.Watanabe, N.Ohno, A.Isayama, K.Kurihara, T.Nakano, N.Oyama, Y.Kawano, G.Matsunaga, S.Sakakibara, M.Sugihara, Y.Kamada and the JT-60U team

    Review of JT-60U Experimental Results in 2007 and 2008   Vol. JAEA-Review 2009-045   page: 84 - 87   2010

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  45. Investigation on the Effect of Temperature Excursion on the Helium Defects of Tungsten Surface by using Compact Plasma Device

    S.Takamura, T.Miyamoto, Y.Tomita, T.Minagawa and N.Ohno

      Vol. 12   page: 25 - 29   2010

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  46. 核融合プラズマ対向材料としての高融点金属材料の現状と課題

    大野哲靖

    ケミカルエンジニヤリング   Vol. 55 ( 12 ) page: 46 - 51   2010

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  47. Conclusion

    OHNO Noriyasu

      Vol. 85 ( 12 )   2009.12

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  48. 名古屋大学大学院工学研究科エネルギー理工学専攻 プラズマ物性工学研究グループ

    大野 哲靖

    電気学会論文誌. A, 基礎・材料・共通部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A, A publication of Fundamentals and Materials Society   Vol. 129 ( 12 )   2009.12

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    DOI: 10.1541/ieejfms.129.931

  49. 燃焼科学とプラズマ科学の融合 : プラズマ支援燃焼

    佐々木 浩一, 上杉 喜彦, 大野 哲靖, 大坂 侑吾

    日本燃焼学会誌   Vol. 51 ( 158 ) page: 259 - 267   2009.11

  50. 流体およびプラズマ乱流の普遍性

    辻 義之, 田中 宏彦, 大野 哲靖

    プラズマ・核融合学会誌   Vol. 85 ( 11 ) page: 783 - 792   2009.11

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  51. 組織構造の定義とその抽出

    辻 義之, 田中 宏彦, 大野 哲靖

    プラズマ・核融合学会誌   Vol. 85 ( 11 ) page: 774 - 782   2009.11

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  52. 確率密度関数とその応用

    辻 義之, 田中 宏彦, 大野 哲靖

    プラズマ・核融合学会誌   Vol. 85 ( 10 ) page: 665 - 673   2009.10

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  53. Introduction

    OHNO Noriyasu

      Vol. 85 ( 9 ) page: 618 - 619   2009.9

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  54. 相関とスペクトル解析

    辻 義之, 田中 宏彦, 大野 哲靖

    プラズマ・核融合学会誌   Vol. 85 ( 9 ) page: 620 - 630   2009.9

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  55. Formation behavior and properties of redeposited layer by Be seeded D-He mixture plasma wall intaractions

    Tokunaga Kazutoshi, Kurishita Hiroaki, Ohno Noriyasu, Ueda Yoshio, Fujiwara Tadashi, Araki Kuniaki, Miyamoto Yoshio, M.J. Baldwin, R.P. Doerner, Nishijima Daisuke, Nagata Shinji, Tsuchiya Bun

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan   Vol. 2009 ( 0 ) page: 625 - 625   2009

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    DOI: 10.11561/aesj.2009s.0.625.0

  56. 電力の歴史を学ぶ&mdash;電力史料館

    大野 哲靖

    電気学会誌   Vol. 129 ( 2 ) page: 107 - 107   2009

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    本記事に「抄録」はありません。

    DOI: 10.1541/ieejjournal.129.107

  57. 3.確率密度関数とその応用

    辻義之、田中宏彦、大野哲靖

    プラズマ・核融合学会誌   Vol. 85   page: 665 - 673   2009

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  58. 4.組織構造の定義とその抽出

    辻義之、田中宏彦、大野哲靖

    プラズマ・核融合学会誌   Vol. 85   page: 774 - 782   2009

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  59. 5.流体およびプラズマ乱流の普遍性

    辻義之、田中宏彦、大野哲靖

    プラズマ・核融合学会誌   Vol. 85   page: 783 - 792   2009

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  60. 6.おわりに(流体乱流研究から診たプラズマ乱流データの解析)

    大野 哲靖

    プラズマ・核融合学会誌   Vol. 85 ( 12 ) page: 834 - 835   2009

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  61. 学協会連携による科学啓発活動:&mdash;第1回 「おもしろ科学教室」&mdash;

    大野 哲靖

    電気学会誌   Vol. 129 ( 8 ) page: 560 - 560   2009

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    本記事に「抄録」はありません。

    DOI: 10.1541/ieejjournal.129.560

  62. 古き設備に見る知恵と誇り

    合田 豊, 山本 直樹, 佐道 泰造, 山本 久博, 藤原 民也, 池内 達, 山中 一雄, 大野 哲靖, 石丸 雅章, 伊瀬 敏史, 内広 哲治

    電気学会誌   Vol. 129 ( 7 ) page: 443 - 446   2009

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    DOI: 10.1541/ieejjournal.129.443

  63. 講座:流体乱流研究から診たプラズマ乱流データの解析ーはじめにー

    大野哲靖

    プラズマ・核融合学会誌   Vol. 85   page: 618 - 619   2009

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  64. 2.相関とスペクトル解析

    辻義之、田中宏彦、大野哲靖

    プラズマ・核融合学会誌   Vol. 85   page: 620 - 630   2009

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  65. 2.核融合炉内複雑環境におけるトリチウム蓄積挙動の実験的研究

    上田良夫、日野友明、大野哲靖、高木郁二、仲野友英、田辺哲朗、梶田信、福本正勝

    プラズマ・核融合学会誌   Vol. 85   page: 684 - 694   2009

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  66. 核融合プラズマとプラズマプロセッシングの橋渡し

    大野 哲靖, 高村 秀一

    プラズマ・核融合学会誌   Vol. 84 ( 11 ) page: 740 - 749   2008.11

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  67. Nanoscopic morphology formation on tungsten induced by D-He mixture plasma exposure Reviewed

    Tokunaga Kazutoshi, Ohno Noriyasu, Ueda Yoshio, Fujiwara Tadashi, Araki Kuniaki, Miyamoto Yoshio, Yoshida Naoaki, Baldwin M.J., Doerner R.P., Nishijima Daisuke, Kurishita Hiroaki

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan   Vol. 2008 ( 0 ) page: 897 - 897   2008

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    DOI: 10.11561/aesj.2008f.0.897.0

  68. Laser Raman spectroscopic analysis of hydrogen ion irradiated graphite in high temparature and flux

    Yoshida Msafumi, Ono Tetsuyasu, Yoshimi Mitsuaki, Takamura Hidekazu, Tanabe Tetsuo

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan   Vol. 2007 ( 0 ) page: 571 - 571   2007

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    DOI: 10.11561/aesj.2007s.0.571.0

  69. スクレイプオフ層とダイバータにおけるELMプラズマ輸送研究の進展

    朝倉 伸幸, 大野 哲靖

    プラズマ・核融合学会誌   ( 9 ) page: 582 - 589   2006.9

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  70. スクレイプ・オフ層における Plasma Blob 輸送現象

    大野 哲靖

    プラズマ・核融合学会誌   Vol. 82 ( 4 ) page: 205 - 214   2006.4

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  71. 解説「スクレイプ・オフ層におけるPlasma Blob輸送現象」

    大野哲靖

    プラズマ・核融合学会誌   Vol. 82 ( 4 ) page: 205 - 214   2006

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  72. 小特集Edge Localized Mode(ELM)研究の最近の成果「4.スクレイプオフ層とダイバータにおけるELMプラズマ輸送研究の進展」

    朝倉伸幸、大野哲靖

    プラズマ・核融合学会誌   Vol. 82 ( 9 ) page: 582 - 589   2006

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  73. Study on the Interaction between RF Electromagnetic Filed and Combustion Flames, and Combustion Control Reviewed

    UESUGI Yoshihiko, TANAKA Yasunori, OHSAKA Yugo, OHNO Noriyasu, KOBAYASHI Takayuki, TAKAMURA Syuichi

      Vol. 2005 ( 73 ) page: 67 - 70   2005.10

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  74. Ignition Characteristics of Radio Frequency Inductively Coupled Plasmas at Atmospheric Pressure

    RAZZAK M. Abdur, TAKAMURA Shuichi, UESUGI Yoshihiko, OHNO Noriyasu

    電気学会研究会資料. PST, プラズマ研究会   Vol. 2005 ( 37 ) page: 57 - 60   2005.6

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  75. Recent Results in Divertor Plasma Simulators Reviewed

    OHNO Noriyasu

    Journal of Plasma and Fusion Research   Vol. 80 ( 3 ) page: 212 - 216   2004.3

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    Recent studies using the linear divertor simulators are reviewed. The experimental results regarding detached recombining plasma, convective blobby plasma transport and plasma-material interaction related to tungsten and carbon dusts are reported.

    DOI: 10.1585/jspf.80.212

  76. 小特集「周辺プラズマ研究の最近の進展」6.ダイバータ模擬実験装置における最近の研究成果

    大野哲靖

    プラズマ・核融合学会誌   Vol. 80 ( 3 ) page: 181 - 227   2004

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  77. Chaos Associated with the Nonlinearity of Ion Sheaths Quasiperiodic Route Reviewed

    OHNO Noriyasu

    Journal of plasma and fusion research   Vol. 73 ( 8 ) page: 827 - 833   1997.8

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    A quasiperiodic route to chaos is investigated experimentally and theoretically in an unstable current-carrying ion sheath. A quasiperiodic regime with two frequencies is realized by a coherent instability and an external periodic oscillation. Chaos appears directly from the quasiperiodic regime when the amplitude of the external oscillation is increased. A correlation dimension. and the largest Lyapunov exponent, obtained experimentally in the chaotic regime, confirm that the observed chaos is deterministic.

  78. Chaos Associated with the Nonlinearity of Ion Sheaths Intermittency Route Reviewed

    KOMORI Akio, OHNO Noriyasu

    Journal of plasma and fusion research   Vol. 73 ( 8 ) page: 834 - 838   1997.8

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    The transition to chaos via type-I intermittency in plasma systems is reviewed briefly. A time series of this intermittency near its onset point is characterized by random bursts of instability at infrequent time intervals. These properties of the type-I intermittency are explained giving an example of the tran-sition from a stationary state to a periodic regime observed in a current-carrying unstable ion sheath.

  79. Review on Chaos in Plasmas Methods of Analysis for Identifying Chaos in Plasma Experiments Reviewed

    OHNO Noriyasu

    Journal of plasma and fusion research   Vol. 73 ( 7 ) page: 682 - 687   1997.7

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    Standard methods of analysis for identifying chaos in plasma experiments are briefly reviewed. A trajectory in phase space can be reconstructed from time series data by use of the embedding method. Data from a correlation dimension and the largest Lyapunov exponent indicate that the observed phenomena is deterministic chaos.

  80. 31p-YM-14 Nonlinear Interactions between High Heat Flux Plasma and Hot Tungsten Plate Reviewed

    Ye M. Y., Tokunaga K., Ohno N., Takamura S.

    日本物理学会講演概要集. 年会   Vol. 51 ( 0 )   1996

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    DOI: 10.11316/jpsgaiyog.51.4.0_159_2

  81. 熱電子放出ダイバータ板と高熱流プラズマ複合系における非線形動的過程に関する研究 Reviewed

    徳永 一成, 葉 民友, 増崎 貴, 大野 哲靖, 高村 秀一

    電気学会研究会資料. EP, プラズマ研究会   Vol. 1995 ( 41 ) page: 83 - 92   1995.5

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▼display all

Presentations 861

  1. Experimental and Modeling Studies of EIR and MAR Proesses on Detached Plasmas Using the Linear Plasma Device NAGDIS-II International coauthorship International conference

    N.Ohno, R.Mano, Y.Uematsu H.Natsume, H.Tanaka, Y.Hayashi, S.Kajita, J.Shi, K.Sawada

    21st International Congress on Plasma Physics(ICPP)  2024.9.12 

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    Event date: 2024.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Ghent, Belguim   Country:Belgium  

  2. 短時間剛体的回転特性を利用したプラズマ径方向放出現象の条件付き平均・移動トモグラフィ

    田中宏彦、宗近洸洋、大野哲靖、夏目祥揮、梶田信

    令和6年度電気・電子・情報関係学会東海支部連合大会  2024.8.29 

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    Event date: 2024.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岐阜大学  

  3. 直線型プラズマの電離進行ー再結合遷移に伴う二次元発光分布の大域的構造変化

    上松雄太、眞野綾二。田中宏彦、大野哲靖、梶田信

    令和6年度電気・電子・情報関係学会東海支部連合大会  2024.8.29 

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    Event date: 2024.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岐阜大学  

  4. 核融合ダイバータプラズマ統合輸送シミュレーションにおける準安定原子の効果

    眞野綾二、田中宏彦、大野哲靖。夏目祥揮、梅澤英弥、澤田圭司、林祐貴、星野一生

    令和6年度電気・電子・情報関係学会東海支部連合大会  2024.8.29 

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    Event date: 2024.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岐阜大学  

  5. 直線型プラズマ装置NAGDIS-IIを用いた非接触プラズマに関する実験・モデリングの親展と今後の展開

    大野哲靖、田中宏彦、眞野綾二、上松雄太、夏目祥揮、澤田圭司、梶田信、林祐貴、⽯劼霖、星野一生、荒巻光利

    第15回核融合エネルギー連合講演会  2024.6.14 

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    Event date: 2024.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:八戸市公民館   Country:Japan  

  6. Investigation of the interaction between detached recombining plasmas and energetic electrons using high-speed spectroscopic measurement International conference

    N.Ohno

    ISPlasma2024/IC-PLANTS2024/APSPT-13  2024.3.4 

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    Event date: 2024.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  7. Effect of Charge Exchange Cross Section on Detached Plasma Simulation International conference

    R.Mano

    ISPlasma2024/IC-PLANTS2024/APSPT-13  2024.3.5 

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    Event date: 2024.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  8. Fabrication of porous silicon for lithium-ion battery anodes in helium plasma International conference

    K.Tabata, S.Kajita, S.Yamada, K.Matsumoto, G.Uchida, H.Tanaka, N.Ohno

    International Conference on Materials and Systems for Sustainability(ICMass2023)  2023.12.2 

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    Event date: 2023.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  9. Sputtering characteristics of helium-tungsten co-deposition layer International conference

    M.Yamamoto, K.Tabata, H.Tanaka, S.Kajita, Q.Shi, N.Ohno

    International Conference on Materials and Systems for Sustainability(ICMass2023)  2023.12.2 

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    Event date: 2023.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  10. 軸ー径方向可動分光計測システムを用いた非接触再結合プラズマの2次元構造の解明

    大野哲靖、上松雄太、螺澤英樹、⽯劼霖、田中宏彦、眞野綾二、夏目祥揮、澤田圭司、梶田信

    第40回プラズマ・核融合学会年会  2023.11.27 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  11. 主成分分析を用いたLHD不純物入射プラズマの放射崩壊時における特徴的輻射構造の抽出

    向井清史、増崎貴、ピーターソンバイロン、小林政弘、河村学思、林祐貴、田中宏彦、宗近洸洋

    第40回プラズマ・核融合学会年会  2023.11.28 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  12. ナノ構造バンドル上への高密度水素プラズマ照射によるホットスポットの形成

    皇甫度均、FENG Shuangyuan、ZHANG Rongshi、梶田信、CUNHA Maria、TIMMER Remco、VERNIMMEN Jordy、SCHOLTEN John、田中宏彦、林祐貴、MORGAN Thomas

    第40回プラズマ・核融合学会年会  2023.11.30 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  13. 原型炉ダイバータにおけるタングステンモノブロックの損耗と彩堆積の評価

    大矢諒、星野一生、朝倉伸幸、坂本宜照、大野哲靖、花田和明

    第40回プラズマ・核融合学会年会  2023.11.30 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  14. 小型トカマクHYBTOK-IIにおける外部共鳴摂動磁場印加時のプラズマ応答計測

    大瀧亮祐、岡本征晃、渡邊清政、大野哲靖、筒井広明

    第40回プラズマ・核融合学会年会  2023.11.29 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  15. 環状磁場プラズマにおける外部RMPの伝搬特性の研究

    渡邊清政、岡本征晃、青島宏海、劉静維、武村勇輝、大野哲靖

    第40回プラズマ・核融合学会年会  2023.11.28 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  16. NAGDIS-II非接触プラズマの理解のためのヘリウムと水素の中性粒子輸送コードの整備

    梅澤英弥、後藤優介、澤田圭司、杉浦健斗、眞野綾二、田中宏彦、大野哲靖、林祐貴、夏目祥揮

    第40回プラズマ・核融合学会年会  2023.11.27 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  17. ヘリウムプラズマおよび水素プラズマの一次元PICコード・中性粒子輸送コードの開発・統合

    小山晟矢、小山諒典、NGUTEN HONG LAM, 澤田圭司、大野哲靖、中村浩章、斎藤誠紀、河村学思

    第40回プラズマ・核融合学会年会  2023.11.27 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  18. 直線型NAGDIS-IIにおける非接触重水素プラズマのEMC3-EIRENE輸送モデリング

    河村学思、田中宏彦、SHI Jielin, 螺澤英樹、大野哲靖、FRERICHS Heinke, FENG Yuhe

    第40回プラズマ・核融合学会年会  2023.11.27 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  19. 直線型装置およびモデリングを用いた中性粒子温度が非接触プラズマ形成に与える影響に関する研究

    林祐貴、大野哲靖、田中宏彦、夏目祥揮、杉浦健斗、眞野綾二、増田翔太、右田龍星、澤田圭司、梶田信、辻原匡志、大嶋啓嗣、荒巻光利、河村学思

    第40回プラズマ・核融合学会年会  2023.11.27 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  20. 間欠的プラズマ照射がタングステンの重水素吸蔵に与える影響

    上田良夫、B.Hattingh, H.T.Lee, Q.Shi, 大野哲靖

    第40回プラズマ・核融合学会年会  2023.11.27 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  21. 多流体水素プラズマ・中性粒子輸送統合コードの開発とEIR-MAR遷移過程の解析

    杉浦健斗、夏目祥揮、増田翔太、田中宏彦、澤田圭司、大野哲靖、星野一生、斎藤誠紀、中村浩章、梅澤英弥、眞野綾二

    第40回プラズマ・核融合学会年会  2023.11.27 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  22. 螺旋状接触・非接触プラズマ中における重水素基底原子分布のTALIF計測

    平岩晃汰、梶田信、田中宏彦、岩井琉紀、荒巻光利、安原亮、大野哲靖

    第40回プラズマ・核融合学会年会  2023.11.27 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  23. パルス状電子ビーム制御による非接触プラズマの崩壊・回復過程の解明

    螺澤英樹、田中宏彦、⽯劼霖、上松雄太、梶田信、大野哲靖

    第40回プラズマ・核融合学会年会  2023.11.27 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  24. 非接触プラズマ回転放出現象の4次元条件付き平均トモグラフィ

    田中宏彦、梶田信、夏目祥揮、大野哲靖

    第40回プラズマ・核融合学会年会  2023.11.27 

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    Event date: 2023.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:アイーナ・いわて県民情報交流センター   Country:Japan  

  25. Influence of dynamic pressure induced by transient recycled neutral flux on reduction of pulsed particle load in the linear plasma device Magnum-PSI International coauthorship International conference

    Y.Hayashi, H.Tanaka, N.Ohno, S.Kajita, T.W.Morgan, H.J. van der Meiden, J.Scholten, J.W.M.Vernimmn, H.Natsume, K.Sawada, S.Masuda

    7th Asia-Pacific Conference on Plasma Physics(AAPPS-DPP2023)  2023.11.13 

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    Event date: 2023.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  26. Growth of micro-pillars on tungsten by helium plasma exposure with impurity gases International conference

    R.Zhang, S.Kajita, H.Tanaka, Y.Yamamoto, N.Ohno

    Global Plasma Forum in Aomori  2023.10.17 

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    Event date: 2023.10

    Language:English   Presentation type:Poster presentation  

    Venue:Nebuta Museum WA RASSE   Country:Japan  

  27. A simple method for modifying the surface morphology of various semiconductors and its application in random lasing International conference

    Q.Shi, H.Fujiwara, S.Kajita, R.Yasuhara, H.Tanaka, N.Ohno, H.Uehara

    Global Plasma Forum in Aomori  2023.10.18 

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    Event date: 2023.10

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Nebuta Museum WA RASSE   Country:Japan  

  28. Effect of co-deposition on helium plasma irradiation to tungsten International conference

    S.Kajita, H.Tanaka, N.Ohno

    Global Plasma Forum in Aomori  2023.10.16 

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    Event date: 2023.10

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Nebuta Museum WA RASSE   Country:Japan  

  29. Study on effects of neutral particle behavior on detached plasma formation using linear plasma device and modeling International conference

    Y.Hayashi, N.Ohno, H.Tanaka, H.Natsume, K.Sugiura, R.Mano, S.Masuda, R.Migita, K.Sawada, S.Kajita, T.Tsujiura, H.Ohshima, M.Aramaki, G.Kawamura

    Global Plasma Forum in Aomori  2023.10.18 

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    Event date: 2023.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Nebuta Museum WA RASSE   Country:Japan  

  30. Newly developed integrated transport code for detached plasma simulation International conference

    H.Tanaka, H.Natsume, S.Masuda, K.Sugiura, H.Umezawa, R.Mano, Y.Hayashi, K.Hoshino, K.Sawada, N.Ohno

    Global Plasma Forum in Aomori  2023.10.18 

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    Event date: 2023.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Nebuta Museum WA RASSE   Country:Japan  

  31. Porous silicon produced with helium plasma for lithium-ion battery anode International conference

    K.Tabata, S.Kajita, T.Yamada K.Matsumoto, G.Uchida, H.Tanaka, N.Ohno

    Global Plasma Forum in Aomori  2023.10.17 

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    Event date: 2023.10

    Language:English   Presentation type:Poster presentation  

    Venue:Nebuta Museum WA RASSE   Country:Japan  

  32. Formation of helium-tungsten co-deposition layers and spectroscopic measurements during sputtering International conference

    M.Yamamoto, K.Tabata, H.Tanaka, S.Kajita, Q.Shi, N.Ohno

    Global Plasma Forum in Aomori  2023.10.17 

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    Event date: 2023.10

    Language:English   Presentation type:Poster presentation  

    Venue:Nebuta Museum WA RASSE   Country:Japan  

  33. Observation of global structural changes in two-dimensional emission profiles associated with attached and detached plasma transitions International conference

    Y.Uematsu, H.Kaizawa, J.Shi, H.Tanaka, S.Kajita, N.Ohno

    Global Plasma Forum in Aomori  2023.10.17 

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    Event date: 2023.10

    Language:English   Presentation type:Poster presentation  

    Venue:Nebuta Museum WA RASSE   Country:Japan  

  34. Multi-fluid Modeling of Detached Hydrogen Plasmas in a Linear Plasma Device using Fluid Code LINDA Invited International conference

    N.Ohno

    19th International Workshop on Plasma Edge Theory in Fusion Devices(PET-19)  2023.9.21 

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    Event date: 2023.9

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Hefei, CHINA   Country:China  

  35. Development of Lagrange-Monte-Carlo Fluid Code and Its Application to a Linear Plasma Device Invited International conference

    M. Mine, K. Hoshino, R. Tatsumi Osawa, H. Tanaka, N. Ohno

    19th International Workshop on Plasma Edge Theory in Fusion Devices(PET-19)  2023.9.20 

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    Event date: 2023.9

    Language:English   Presentation type:Poster presentation  

    Venue:Hefei, CHINA   Country:China  

  36. Transport modeling of deuterium plasma detachment in the linear device NAGDIS-II with EMC3-EIRENE International conference

    G. Kawamura, H. Tanaka, J. Shi, H. Kaizawa, N. Ohno, H. Frerichs, Y. Feng

    19th International Workshop on Plasma Edge Theory in Fusion Devices(PET-19)  2023.9.20 

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    Event date: 2023.9

    Language:English   Presentation type:Poster presentation  

    Venue:Hefei, CHINA   Country:China  

  37. Comparative study of detached H/D plasmas using laser Thomson scattering and spectroscopy in the linear plasma divertor simulator NAGDIS-II International coauthorship International conference

    J.Shi, H.Kaizawa, H.Tanaka, S.Kajita, N.Ohno, H.Ding

    20th International Symposium on Laser-Aided Plasma Diagnostics (LAPD20)  2023.9.11 

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    Event date: 2023.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  38. 非接触プラズマ研究の進展ーNAGDIS実験とモデリングー

    大野哲靖、夏目祥揮、杉浦健斗、井戸太一、螺澤英樹、石劼霖、平岩晃汰、上松雄太、田中宏彦、増田翔太、梅澤英弥、小山晟矢、澤田圭司、梶田信、林祐貴、星野一生

    スクレイプ・オフ層及びダイバータ物理サブクラスター炉材料サブクラスター、ブランケットサブクラスター、ダイバータサブクラスター(令和5年度第1回)筑波大学プラズマ研究センターシンポジウム合同会合  2023.8.10 

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    Event date: 2023.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:筑波大学プラズマ研究センター   Country:Japan  

  39. Field emission current from protrusion structure formed by helium plasma with various impurity gases International conference

    R.Zhang

    30th International Symposium on Discharges and Electrical Insulation in Vacuum(ISDEIV2023)  2023.6.26 

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    Event date: 2023.6

    Language:English  

    Country:Japan  

  40. Condition for the growth origin of large-scale fiberform nanostructures International conference

    K.Hori, R.Zhang, S.Kajita H.Tanaka, N.Ohno

    19th International Conference on PLASMA-FACING MATERIALS AND COMPONENTS FOR FUSION APPLICATIONS(PFMC)  2023.5.23 

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    Event date: 2023.5

    Language:English   Presentation type:Poster presentation  

    Venue:LVR LandesMuseum Bonn(ドイツ)   Country:Germany  

  41. Application of Machine Learning for OES data in NAGDIS-II International conference

    S.Kajita, T.Sakakibara, H.Kaizawa H.Natsume, H.Tanaka, K.Fujii, N.Ohno

    19th International Conference on PLASMA-FACING MATERIALS AND COMPONENTS FOR FUSION APPLICATIONS(PFMC)  2023.5.25 

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    Event date: 2023.5

    Language:English   Presentation type:Poster presentation  

    Venue:LVR LandesMuseum Bonn(ドイツ)   Country:Germany  

  42. Thermal Response of Nano-Tendril Bundles to Steady and Transient Heat Loads International conference

    Q.Xue, R.Zhang, K.Hori, H.Tanaka, S.Kajita, T.Kuwabara, N.Ohno

    ISPlasma2023/IC-PLANTS2023(15th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials 16th International Conference on Plasma-Nano Technology & Science)  2023.3.7 

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    Event date: 2023.3

    Language:English   Presentation type:Poster presentation  

  43. Dynamic Response of Detached Recombining Plasmas by Applying Electron Beam International conference

    N.Ohno, H.Kaizawa, K.Nakabayashi, H.Natsume, H.Tanaka, S.Kajita

    ISPlasma2023/IC-PLANTS2023(15th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials 16th International Conference on Plasma-Nano Technology & Science)  2023.3.9 

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    Event date: 2023.3

    Language:English   Presentation type:Oral presentation (general)  

  44. Deuterium Atom Measurement by TALIF in the Spiral Plasma Generator NAGDIS-T International conference

    K.Hiraiwa, S.Kajita, R.Nishio, H.Tanaka, K.Tojo, M.Aramaki, R.Yasuhara, N.Ohno

    ISPlasma2023/IC-PLANTS2023(15th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials 16th International Conference on Plasma-Nano Technology & Science)  2023.3.6 

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    Event date: 2023.3

    Language:English   Presentation type:Poster presentation  

  45. 先進的プラズマ加工技術を利用した大面積ランダムレーザー素子の開発

    上原日和、シーチュエン、藤原英樹、梶田信、安原亮、田中宏彦、大野哲靖

    レーザー学会学術講演会第43回年次大会  2023.1 

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    Event date: 2023.1

    Language:Japanese  

    Venue:ウインクあいち  

  46. Fabrication of porous silicon using helium plasma for lithium-ion battery anodes

    K.Tabata, S.Kajita, T.Yamada, G.Uchida, N.Ohno, H.Tanaka

    2022.12.5 

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    Event date: 2022.12

    Language:English   Presentation type:Poster presentation  

  47. Analysis of Detached Plasmas in a Linear Plasma Device by using Fluid Code LINDA with Kineti Neutral Transport Code International conference

    N.Ohno, S.Masuda, H.Natsume, K.Sugiura, K.Sawada, H.Tanaka, T.Hongo, T.Doi, D.Sekiya, S.Koyama, T.Ido, Y.Hayashi, K.Hoshino

    20th International Congress on Plasma Physics(ICPP2022)  2022.11.30 

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    Event date: 2022.11 - 2022.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  48. 中性粒子輸送コードとの統合をめざした1次元PICコードの開発

    関谷光之、小山晟矢、澤田圭司、大野哲靖、中村浩章、齊藤誠紀、河村学思

    第39回プラズマ・核融合学会年会  2022.11.23 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Poster presentation  

  49. 螺旋状プラズマ生成装置NAGDIS-TにおけるTALIFによる重水素原子計測

    平岩晃汰、西尾亮佑、梶田信、大野哲靖、田中宏彦、荒巻光利

    第39回プラズマ・核融合学会年会  2022.11.22 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:富山国際会議場   Country:Japan  

  50. 小型トカマクHYBTOK-IIにおける外部共鳴摂動磁場印加時のプラズマ内部のプローブ計測

    岡本征晃、山越匡葵、渡邊清政、大野哲靖

    第39回プラズマ・核融合学会年会  2022.11.22 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:富山国際会議場  

  51. パルス状電子ビーム印加によるヘリウム非接触プラズマの動的応答

    螺澤英樹、田中宏彦、夏目祥揮、榊原武寛、中村賢二、梶田信、大野哲靖

    第39回プラズマ・核融合学会年会  2022.11.22 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:富山国際会議場  

  52. 多流体水素輸送コードを用いた非接触プラズマの背景中性粒子依存性の解析

    杉浦健斗、夏目祥揮、井戸太一、増田翔太、田中宏彦、澤田圭司、大野哲靖、星野一生

    第39回プラズマ・核融合学会年会  2022.11.22 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Poster presentation  

  53. NAGDIS-IIヘリウムプラズマおよび水素プラズマ統合コードのための中性粒子輸送コードの整備

    増田翔太、澤田圭司、梅澤英弥、中山爽、土居健志、夏目祥揮、杉浦健斗、大野哲靖、田中宏彦、林祐貴

    第39回プラズマ・核融合学会年会  2022.11.23 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:富山国際会議場  

  54. ヘリウムタングステン共堆積環境における巨大ファズの形成起点

    堀健太、梶田信、張容実、田中宏彦、大野哲靖

    第39回プラズマ・核融合学会年会  2022.11.24 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  55. 原型炉プラズマ対向壁の燃料インベントリー評価とヘリウム照射効果

    大矢諒、星野一生、朝倉伸幸、坂本宜照、大野哲靖、花田和明

    第39回プラズマ・核融合学会年会  2022.11 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:富山国際会議場  

  56. 不純物添加ヘリウムプラズマ照射による構造の変化及び電電子放出特性

    張容実

    第39回プラズマ・核融合学会年会  2022.11.25 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:富山国際会議場  

  57. 直線非接触プラズマの4次元時空間輸送挙動

    田中宏彦

    第39回プラズマ・核融合学会年会  2022.11.22 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:富山国際会議場  

  58. 条件付き平均法を用いた高時間分解能プラズマ分光計測系の開発と応用

    夏目祥揮

    第39回プラズマ・核融合学会年会  2022.11.24 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:富山国際会議場  

  59. トロイダルリップル及びRMPコイルパリティ差異に着目したJT-60SA周辺プラズマ輸送シミュレーション

    榎本昇悟

    第39回プラズマ・核融合学会年会  2022.11.23 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:富山国際会議場  

  60. トーラス型装置NAGDIS-Tを用いた窒素水素混合プラズマ照射による窒化チタン形成

    東條圭吾

    第39回プラズマ・核融合学会年会  2022.11.23 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:富山国際会議場  

  61. アニーリングによるバンドル状繊維構造周辺のファズの局部的な消失

    薛淇

    第39回プラズマ・核融合学会年会  2022.11.22 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:富山国際会議場  

  62. ヘリウムプラズマ中でのポーラスシリコンの作製と二次電池特性評価

    田畑希帆

    第39回プラズマ・核融合学会年会  2022.11.22 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:富山国際会議場  

  63. CRモデル/機械学習を用いたヘリウムプラズマ発光解析

    榊原武寛

    第39回プラズマ・核融合学会年会  2022.11.22 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:富山国際会議場  

  64. Predictive calculation of fuel inventory in plasma-facing walls of JA DEMO reactor International conference

    M.Oya, K.Hoshino, N.Asakura, Y.Sakamoto, N.Ohno, K.Hanada

    ITC31(土岐コンファレンス)  2022.11 

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    Event date: 2022.11

    Language:English  

  65. Generation of stationary high-density cascade arc plasmas and its application to plasma windows

    S.Namba, O.Yanagi, Y.Sunada, K.Okuda, K.Yamasaki, N.Tamura, Y.Hayashi, Y.Hamaji, S.Masuzaki, M.Takagi, N.Ohno, H.Okuno

    ICRP-11/GEC2022(11th International Conference on Reactive Plasmas/2022 Gaseous Electronics Conference  2022.10.3 

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    Event date: 2022.10

    Language:English  

    Country:Japan  

  66. Langmuir probe and Laser Photodetachment Study of Afterglow Phase in Dual RF Frequency Pulsed Plasma Etching Processes Operated with Synchronized DC Bias International coauthorship International conference

    B.B.Sahu, S.Hattori, M.Sekine T.Tsutsumi, N.Britun, K.Ishikawa H.Tanaka, T.Gohira, Y.Ohya, N.Ohno, M.Hori

    ICRP-11/GEC2022(11th International Conference on Reactive Plasmas/2022 Gaseous Electronics Conference  2022.10.3 

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    Event date: 2022.10

    Language:English  

    Venue:Sendai International Conference Building   Country:Japan  

  67. Observation of Afterglow Warm Electrons in Synchronized DC Biased Dual Frequency Pulsed Plasma Etching Processes International coauthorship

    B.B.Sahu, S.Hattori, M.Sekine, T.Tsutsumi, N.Britun, K.Ishikawa, H.Tanaka, T.Sohira, Y.Ohya, N.Ohno, M.Hori

    ICRP-11/GEC2022(11th International Conference on Reactive Plasmas/2022 Gaseous Electronics Conference  2022.10.3 

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    Event date: 2022.10

    Language:English  

    Venue:Sendai International Conference Building   Country:Japan  

  68. GAMMA10/PDX接触・非接触ダイバータ条件におけるBlob様輸送構造

    田中宏彦、江角直道、杉山吏作、蒲生宙樹、重松直希、吉川正志、小波蔵純子、平田真史、大野哲靖、坂本瑞樹

    第14回核融合エネルギー連合講演会  2022.7.8 

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    Event date: 2022.7

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン開催  

  69. 非接触プラズマ解析のための流体・中性粒子輸送統合コードの開発

    大野哲靖、増田翔太、夏目祥揮、澤田圭司、田中宏彦、本郷棟太、土居健志、関谷光之、小山晟矢、井戸太一、杉浦健斗、林祐貴、星野一生

    第14回核融合エネルギー連合講演会  2022.7.8 

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    Event date: 2022.7

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン開催  

  70. Global fluctuation structures across ionizing-and recombining-plasma regions International conference

    H.Tanaka, H.Natsume, S.Kajita, N.Ohno

    25th International Coference on Plasma Surface Interaction in Controlled Fusion Devices(PSI-25)  2022.6 

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    Event date: 2022.6

    Language:English   Presentation type:Poster presentation  

  71. Usage of machine learning for the interpretation of helium line intensities in Magnum-PSI International coauthorship International conference

    S.Kajita, S.Iwai, H.Tanaka, D.Nishijima, K.Fujii, H.J.van der Meiden, N.Ohno

    25th International Coference on Plasma Surface Interaction in Controlled Fusion Devices(PSI-25)  2022.6 

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    Event date: 2022.6

    Language:English   Presentation type:Poster presentation  

  72. Influence of target configuration on plasma detachment in the GAMMA 10/PDX International conference

    T.Sugiyama, N.Ezumi, H.Gamo, A.Kondo, N.Shigematsu, T.Seto, M.Hirata, J.Kohagura, M.Yoshikawa, Y.Nakashima, .Hwangbo, S.Togo, M.Sakamoto, Dan.Thomas, T.Kuwabara, H.Tanaka, N.Ohno, K.Sawada, A.Tonegawa, G.Kawamura, S.Masuzaki

    25th International Coference on Plasma Surface Interaction in Controlled Fusion Devices(PSI-25)  2022.6 

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    Event date: 2022.6

    Language:English   Presentation type:Poster presentation  

  73. Spatiotemporal behavior of plasma detachment during combined seeding of H2 and N2 in GAMMA10/PDX International conference

    N.Ezumi, H.Gamo, S.Takahashi, T.Sugiyama, T.Okamoto, N.Shigematsu, K.Takanashi, A.Kondo, T.Seto, S.Togo, M.Hirata, J.Kohagura, M.Yoshikawa, Y.Nakashima, M.Sakamoto, R.Perillo, N.Ohno, K.Sawada, S.Masuzaki

    25th International Coference on Plasma Surface Interaction in Controlled Fusion Devices(PSI-25)  2022.6 

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    Event date: 2022.6

    Language:English   Presentation type:Poster presentation  

  74. Variation of spatial distribution of detached helium plasma due to hydrogen isotope gas puffing International conference

    N.Ohno, X.Guo, H.Tanaka, S.Kajita

    25th International Coference on Plasma Surface Interaction in Controlled Fusion Devices(PSI-25)  2022.6.13 

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    Event date: 2022.6

    Language:English   Presentation type:Oral presentation (general)  

  75. Field emission property of nano-tendril bundles formed with various impurity gases International conference

    R.Zhang, S.Kajita, D.Hwangbo, D.Sinelnikov, H.Tanaka, N.Ohno

    25th International Coference on Plasma Surface Interaction in Controlled Fusion Devices(PSI-25)  2022.6 

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    Event date: 2022.6

    Language:English   Presentation type:Poster presentation  

  76. Integration of fluid plasma and kinetic neutral transport codes for accurate detached-plasma simulation International conference

    H.Natsume, T.Ido, S.Masuda, H.Tanaka, N.Ohno, K.Sawada, K.Hoshino, A.Hatayama, S.Kajita, M.Goto

    25th International Coference on Plasma Surface Interaction in Controlled Fusion Devices(PSI-25)  2022.6 

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    Event date: 2022.6

    Language:English   Presentation type:Poster presentation  

  77. Formation Process of Large-Scale Fiberform Nanostructures on a Tungsten Mesh in Co-Deposition Environment of Helium Plasma and Tungsten International conference

    Kenta Hori, Shin Kajita, Rongshi Zhang, Hirohiko Tanaka and Noriyasu Ohno

    ISPlasma2022/IC-PLANTS2022  2022.3.9 

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    Event date: 2022.3

    Language:English   Presentation type:Poster presentation  

  78. Two Photon Laser Induced Fluorescence to Measure Nitrogen Atomic Density in NAGDIS-T International conference

    S.Kajita, R.Nishio, H.Tanaka, K.Tojo, K.Hiraiwa R.Yasuhara M.Aramaki, N.Ohno

    ISPlasma2022/IC-PLANTS2022  2022.3.8 

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    Event date: 2022.3

    Language:English   Presentation type:Poster presentation  

  79. Development and Optimization of Cascaded Arc Plasma Source in TPD-II International conference

    Y.Hayashi Y.Mamaji, S.Masuzaki, N.Ezumi, N.Ohno, S.Namba, M.Takagi

    ISPlasma2022/IC-PLANTS2022  2022.3.8 

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    Event date: 2022.3

    Language:English   Presentation type:Poster presentation  

  80. Generation and Characterization of Spiral Hydrogen-Nitrogen Mixed Plasmas for Ammonia Synthesis International conference

    K.Hiraiwa, N.Ohno, K.Tojo, R.Nishio, S.Kajita, H.Tanaka

    ISPlasma2022/IC-PLANTS2022  2022.3.8 

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    Event date: 2022.3

    Language:English   Presentation type:Poster presentation  

  81. Motion Analysis of Arc Spots on Tungsten Fuzz by Means of Self-Avoiding Random Walk Model International conference

    D.Hwangbo, D.Nishijima, S.Kajia, N.Ohno

    ISPlasma2022/IC-PLANTS2022  2022.3.9 

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    Event date: 2022.3

    Language:English   Presentation type:Oral presentation (general)  

  82. Suppression of Arc Ignition on Nano-Tendril Bundles by Annealing Treatment International conference

    Rongshi Zhang, Shin Kajita, Dogyun Hwangbo, Dmitry Sinelnikov, Hirohiko Tanaka, Noriyasu Ohno

    ISPlasma2022/IC-PLANTS2022  2022.3.7 

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    Event date: 2022.3

    Language:English   Presentation type:Poster presentation  

  83. Formation and Characterization of Titanium Nitride by Using a Torus-Type Device NAGDIS-T International conference

    Keigo Tojo, Noriyasu Ohno, Shin Kajita, Hirohiko Tanaka and Ryosuke Nishio

    ISPlasma2022/IC-PLANTS2022  2022.3.9 

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    Event date: 2022.3

    Language:English   Presentation type:Poster presentation  

  84. Multi-Signal Monitoring for Discharge Optimization in Linear Plasma Device NAGDIS-II International conference

    Takehiro Sakakibara, Hiroki Natsume, Yohei Imaeda, Hirohiko Tanaka, Shin Kajita and Noriyasu Ohno

    ISPlasma2022/IC-PLANTS2022  2022.3.7 

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    Event date: 2022.3

    Language:English   Presentation type:Poster presentation  

  85. Study for Densification and Stabilization of Hydrogen-Isotope Plasma in NAGDIS-II International conference

    Imaeda Yohei, Sakakibara Takehiro, Natsume Hiroki, Tanaka Hirohiko, Kajita Shin and Ohno Noriyasu

    ISPlasma2022/IC-PLANTS2022  2022.3.8 

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    Event date: 2022.3

    Language:English   Presentation type:Poster presentation  

  86. 流体コードLINDAとの統合をめざしたNAGDIS-IIヘリウムプラズマおよび水素プラズマの中性粒子輸送コードの整備

    増田翔太、澤田圭司、本郷棟太、土居健志、関谷光之、夏目祥揮、井戸太一、田中宏彦、大野哲靖、林祐貴

    第38回プラズマ・核融合学会年会  2021.11.22 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン  

  87. 流体コードLINDAの多流体化と直線型水素プラズマのモデリング

    井戸太一, 夏目祥揮, 田中宏彦, 大野哲靖, 澤田圭司, 増田翔太, 梶田信, 畑山明聖, 星野一生

    第38回プラズマ・核融合学会年会  2021.11.22 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン  

  88. HYBTOK-IIトカマクにおける外部共鳴摂動磁場のプラズマ中の伝搬に関する研究

    岡本征晃、渡邊清政、大野哲靖

    第38回プラズマ・核融合学会年会  2021.11.24 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン  

  89. 直線型プラズマ装置NAGDIS-IIにおける放電最適化のための多種信号モニタリング

    榊原武寛、今枝陽平、夏目祥揮、田中宏彦、梶田信、大野哲靖

    第38回プラズマ・核融合学会年会  2021.11.24 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン  

  90. レーザートムソン散乱計測及び多種信号モニタリングによるNAGDIS-II重水素プラズマ放電特性の調査

    今枝陽平、大野哲靖、梶田信、田中宏彦、榊原武寛

    第38回プラズマ・核融合学会年会  2021.11.24 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン  

  91. VUVAS/Actionaometry/LIFを用いた窒素原子密度計測

    西尾亮佑、梶田信、大野哲靖、田中宏彦、浅岡晃次、堤隆嘉、堀勝、荒巻光利

    第38回プラズマ・核融合学会年会  2021.11.24 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Poster presentation  

  92. ヘリウムプラズマータングステン共堆積環境におけるタングステンメッシュ上での巨大ナノ構造の形成過程

    堀健太、梶田信、張容実、江田智樹、田中宏彦、大野哲靖

    第38回プラズマ・核融合学会年会  2021.11.23 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Poster presentation  

  93. ヘリウムプラズマ照射によるバナジウム薄膜表面の繊維状ナノ構造形成

    江田智樹、梶田信、大野哲靖、田中宏彦

    第38回プラズマ・核融合学会年会  2021.11.23 

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    Event date: 2021.11

    Language:English   Presentation type:Poster presentation  

    Venue:オンライン  

  94. トーラス型装置NAGDIS-Tを用いた窒化チタン形成と特性評価

    東條圭吾、大野哲靖、梶田信、田中宏彦、西尾亮佑、溝口桜子

    第38回プラズマ・核融合学会年会  2021.11.23 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン  

  95. 熱負荷を受けたITERグレードタングステンモノブロックの双方向反射率分布関数計測

    夏目祥揮、野尻訓平、梶田信、福田誠、牛木知彦、杉江達夫、北澤真一、菊池貴智、横塚友啓、田中宏彦、大野哲靖、江里幸一郞、波多野仰紀

    第38回プラズマ・核融合学会年会  2021.11.22 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン  

  96. JT-60SAにおける複数のRMP条件での周辺プラズマモデリング

    榎本昇悟、田中宏彦、河村学思、松永剛、小林政弘、星野一生、鈴木康浩、梶田信、大野哲靖

    第38回プラズマ・核融合学会年会  2021.11.22 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン  

  97. GAMMA10/PDXダイバータ模擬実験における水素ガスと窒素及びネオンガスとの重畳入射が非接触プラズマ形成へ及ぼす影響

    蒲生宙樹、江角直道、杉山吏作、近藤綾音、重松直希、瀬戸拓実、東郷訓、平田真史、小波蔵純子、吉川正志、皇甫度均、中嶋洋輔、坂本瑞樹、R.Perillo、桑原竜弥、田中宏彦、大野哲靖、澤田圭司、利根川昭、増崎貴

    第38回プラズマ・核融合学会年会  2021.11.22 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン  

  98. GAMMA10/PDXにおけるV字ターゲット角度によるダイバータ模擬プラズマへの影響

    杉山吏作、江角直道、蒲生宙樹、近藤綾音、重松直希、瀬戸拓実、平田真史、小波蔵純子、吉川正志、中嶋洋輔、皇甫度均、東郷訓、坂本瑞樹、桑原竜弥、田中宏彦、大野哲靖、澤田圭司、利根川昭、増崎貴、河村学思

    第38回プラズマ・核融合学会年会  2021.11.22 

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン  

  99. 電離進行ー再結合プラズマ接続領域の広域揺動ダイナミクス

    田中宏彦、夏目祥揮、梶田信、大野哲靖

    第38回プラズマ・核融合学会年会  2021.11.22 

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    Event date: 2021.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン  

  100. ヘリウム・軽/重水素混合プラズマの非接触化にみられる同位体効果

    郭欣玥、田中宏彦、梶田信、大野哲靖

    第38回プラズマ・核融合学会年会  2021.11.22 

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    Event date: 2021.11

    Language:English   Presentation type:Poster presentation  

    Venue:オンライン  

  101. JT-60SA edge plasma modeling under several resonant magnetic perturbation conditions International conference

    S. Enomoto, H. Tanaka, G. Kawamura, G. Matsunaga, M. Kobayashi, K. Hoshino, Y. Suzuki, S. Kajita, and N. Ohno

    The 30th International Toki Conference on Plasma and Fusion Research (ITC30)  2021.11.16 

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    Event date: 2021.11

    Language:English   Presentation type:Oral presentation (general)  

  102. Measurement of the bidirectional reflectance distribution function of tungsten surface sputtered in argon plasma International conference

    H. Natsume, K. Nojiri, S. Kajita, T. Ushiki, T. Sugie, S. Kitazawa, T. Kikuchi, T. Yokozuka, H. Tanaka, N. Ohno, T. Hatae

    The 30th International Toki Conference on Plasma and Fusion Research (ITC30)  2021.11.19 

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    Language:English   Presentation type:Oral presentation (general)  

  103. The enhancement of fuzz formation caused by He-W co-deposition International conference

    W. Shen, S. Kajita, Q. Shi, H. Tanaka, N. Ohno

    The 30th International Toki Conference on Plasma and Fusion Research (ITC30)  2021.11.18 

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    Event date: 2021.11

    Language:English   Presentation type:Oral presentation (general)  

  104. Isotope effects in detached helium plasma with hydrogen and deuterium gas puffing International conference

    X. Guo, H. Tanaka, S. Kajita, N.Ohno

    The 30th International Toki Conference on Plasma and Fusion Research (ITC30)  2021.11.17 

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    Event date: 2021.11

    Language:English   Presentation type:Oral presentation (general)  

  105. New Long Life Fast Atom Beam Source for Surface Activated Bonding International conference

    R.Morisaki, J.Sakurai, C.Oka, T.Yamazaki, T.Akao, T.Takahashi, H.Tsuji, N.Ohno, S.Hata

    LTB-3D(2021 7th International Workshop on Low Temperature Bonding for 3D Integration)  2021.10 

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    Event date: 2021.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:ONLINE  

  106. Overheating of nanostructured tendril bundles due to thermofield emission International coauthorship International conference

    D.Sinelnikov, S.Kajita, D.Bulgadaryan, N.Ohno, V.Kulagin, D.Insin, D.Hwangbo

    29th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)  2021.9 

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    Event date: 2021.9 - 2021.10

    Language:English   Presentation type:Poster presentation  

    Venue:virtual edition  

  107. Stationary hot dense He arc discharge apparatus using an indirectly heated LaB6 hollow cathode electron emitter International conference

    M.Sumino, Y.Sunada, O.Yanagi, Md. Anwarul Islam, R.Shigesada, K.Hatta, K.Kurosaki, N.Tamura, H.Okuno, N.Ohno, M.Takagi, K.Yamasaki, S.Namba

    5th Asia-Pacific Conference on Plasma Physics(AAPPS)  2021.9 

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    Event date: 2021.9 - 2021.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:ONLINE  

  108. Comprehensive study of detached recombining plasmas by using a high density linear plasma device International conference

    N.Ohno, H.Tanaka, S.Kajita, K.Sawada, Y.Hayashi, K.Hoshino, N.Ezumi, M.Aramaki

    5th Asia-Pacific Conference on Plasma Physics(AAPPS)  2021.9.28 

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    Event date: 2021.9 - 2021.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:ONLINE  

  109. 核融合プラズマダイバーターと原子・分子過程

    大野哲靖

    日本物理学会2021年秋季大会  2021.9.21 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

  110. 表面活性化接合用新形高速原子ビーム源内部のプラズマ解析

    森崎諒、櫻井淳平、岡智絵美、山崎貴大、平井隆巳、高橋知典、辻裕之、大野哲靖、秦誠一

    第82回応用物理学会秋季学術講演会  2021.9.10 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

  111. ヘリウムプラズマ照射によるバナジウム薄膜へのナノ構造形成

    江田智樹、梶田信、大野哲靖、田中宏彦

    第82回応用物理学会秋季学術講演会  2021.9.13 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

  112. 螺旋状窒素プラズマ中の窒素原子密度計測

    西尾亮佑、梶田信、大野哲靖、田中宏彦、浅岡晃次、堤隆嘉、堀勝

    第82回応用物理学会秋季学術講演会  2021.9.10 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

  113. Detached helium plasma simulation with collisional-radiative model

    H.Tanaka, I.Saeki, N.Ohno, S,Kajita, T.Ido, H.Natsume, A.Hatayama, K.Hoshino, K.Sawada, M.Goto

    The 40th JSST annual International Conference on Simulation Technology(JSST2021)  2021.9.1 

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    Event date: 2021.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:ONLINE  

  114. Detached divertor simulation experiments in linear plasma device NAGDIS-II Invited International conference

    N.Ohno, H.Tanaka, S.Kajita

    Open Magnetic Systems for Plasma Confinement(OS2021)  2021.8.24 

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    Event date: 2021.8

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:ONLINE  

  115. Divertor simulation experiment in the open magnetic field of GAMMA 10/PDX: effect of nitrogen seeding on plasma detachment International conference

    N.Ezumi, H.Gamo, T.Sugiyama, A.Kondo, S.Togo, M.Hirata, J.Kohagura, M.Yoshikawa, Y.Nakashia, M.Sakamoto, R.Perillo, N.Ohno, K.Sawada, S.Masuzaki

    Open Magnetic Systems for Plasma Confinement(OS2021)  2021.8.25 

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    Event date: 2021.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:ONLINE  

  116. Fluctuation analyses for extracting the cross-field transport in detached plasmas International conference

    H.Tanaka, S.Kajita, M.Sakamoto, N.Ezumi, M.Yoshikawa, J.Kohagura, N.Ohno

    Open Magnetic Systems for Plasma Confinement(OS2021)  2021.8.25 

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    Event date: 2021.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:ONLINE  

  117. Morphological changes of nano-tendril bundles by arcing and annealing International coauthorship International conference

    R.Zhang, S.Kajita, D.Hwangbo, T.Okuyama, H.Tanaka, N.Ohno

    PFMC-18(18th International Conference on Plasma-Facing Materials and Components for Fusion Applications)  2021.5.18 

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    Event date: 2021.5

    Language:English   Presentation type:Oral presentation (general)  

    Venue:virtual edition  

  118. Thermal treatment of W large-scale fiberform nanostructures International conference

    S.Kajita, T.Okuyama, N.Yoshida, H.Tanaka, T.Kuwabara, N.Ohno

    PFMC-18(18th International Conference on Plasma-Facing Materials and Components for Fusion Applications)  2021.5.18 

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    Event date: 2021.5

    Language:English   Presentation type:Oral presentation (general)  

    Venue:virtual edition  

  119. Fuel Retention in and Removal from Neutron-Irradiated Tungsten International conference

    Y.Hatano, M.Yajima, V.Kh.Alimov, T.Toyama, Y.Nobuta, Y.Oya, T.Kuwabara, K.Suzuki, T.Shcwarz-Sellinger, A.V.Spitsyn, A.Matsumoto, N.Ohno

    PFMC-18(18th International Conference on Plasma-Facing Materials and Components for Fusion Applications)  2021.5.20 

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    Event date: 2021.5

    Language:English   Presentation type:Oral presentation (general)  

    Venue:virtual edition  

  120. エチレン光触媒分解におけるプラズマ表面改質TiO2の酸化条件・表面構造最適化

    宮口和也・梶田信・田中宏彦・安永円理子・吉田朋子・大野哲靖

    第127回触媒討論会  2021.3.17 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  121. The Impurity Ratio Effect on the Formation of Si Nanocone Irradiated with Vairous Energy of Helium Ions International conference

    Q.Shi, S.Kajita, S.Feng, N.Ohno

    ISPlasma2021/IC-PLANTS2021  2021.3.9 

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    Event date: 2021.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  122. Motion Analysis of Arc Spots on Nanostructured Tungsten under Axial Magnetic Field International conference

    D.Hwangbo, D.Nishijima, S.Kajita, R.Doerner, N.Ohno

    ISPlasma2021/IC-PLANTS2021  2021.3.8 

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    Event date: 2021.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  123. Characteristics of Detached Helium Plasmas with Injection of Various Gas Species International conference

    X.Guo, S.Hattori, S.Kajita, H.Tanaka, N.Ohno

    ISPlasma2021/IC-PLANTS2021  2021.3.8 

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    Event date: 2021.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  124. Surface Structure Change of Vanadium Thin Film by Helium Plasma Irradiation International conference

    T.Eda, S.Kajita, H.Tanaka, N.Ohno

    ISPlasma2021/IC-PLANTS2021  2021.3.9 

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    Event date: 2021.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  125. Photoelectrochemical Properties of Plasma-Induced Nanostructured WO3 International conference

    S.Feng, S.Kajita, M.Higashi, A.Bieberle, T.Yoshida, N.Ohno

    ISPlasma2021/IC-PLANTS2021  2021.3.9 

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    Event date: 2021.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  126. Measurements of Negative Ion Density and Plasma Parameters in Ar/O2/C4F8 Etching Plasmas by Langmuir Probe-Assisted Laser Photodetachment International conference

    B.B.Sahu, S.Hattori, T.Tsutsumi, N.Britun, M.Sekine, K.Ishikawa, H.Tanaka, T.Gohira, Y.Ohya, N.Ohno, M.Hori

    ISPlasma2021/IC-PLANTS2021  2021.3.8 

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    Event date: 2021.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  127. Effect of He-W Co-Deposition on Retention and Fuzz Formation International conference

    W.Shen, S.Kajita, Q.Shi, N.Yoshida, H.Tanaka, N.Ohno

    ISPlasma2021/IC-PLANTS2021  2021.3.9 

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    Event date: 2021.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  128. Comparison of Nitrogen Atom Densities Measured with VUVAS and Actinometry in Spiral Shape Plasma International conference

    R.Nishio, N.Ohno, S.Kajita, H.Tanaka, K.Asaoka, T.Tsutsumi, M.Hori

    ISPlasma2021/IC-PLANTS2021  2021.3.8 

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    Event date: 2021.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  129. Size distribution of nano-tendril bundles with various additional impurity gases International conference

    R.Zhang, D.Hwangbo, S.Kajita, H.Tanaka, N.Ohno

    PSI2020(The 24th International Conference on Plasma Surface Interactions in Controlled Fusion Devices)  2021.1.25 

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    Event date: 2021.1

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  130. Experimental observations and modelling of magnetic field direction-dependent poloidal and toroidal asymmetries in radiation profiles during N2 seeding in LHD International conference

    B.J. Peterson, G. Kawamura, P.L. van de Giessen, K. Mukai, S. Borling, H. Tanaka, R. Sano, S.N. Pandya, S.Y. Dai, S. Masuzaki, T. Akiyama, M. Kobayashi, M. Goto, G. Motojima, R. Sakamoto, N. Ohno, T. Morisaki, J. Miyazawa, and the LHD Experiment Group

    PSI2020(The 24th International Conference on Plasma Surface Interactions in Controlled Fusion Devices)  2021.1.27 

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    Event date: 2021.1

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  131. Cross-field transport in detached helium plasmas in Magnum-PSI International conference

    H.Tanaka, Y.Hayashi, S.Kajita, H.J.van der Meiden, M.Yoshikawa, J.W.M.Vernimmen, J.Scholten, I.Classen, T.W.Morgan, N.Ohno

    PSI2020(The 24th International Conference on Plasma Surface Interactions in Controlled Fusion Devices)  2021.1.27 

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    Event date: 2021.1

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  132. Evaluation of axial decay length of plasma pressure in detached plasma International conference

    N.Ohno, H.Takano, S.Kajita, H.Tanaka, S.Hattori, Y.Imaeda

    PSI2020(The 24th International Conference on Plasma Surface Interactions in Controlled Fusion Devices)  2021.1.26 

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    Event date: 2021.1

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  133. Analysis of ejected and rotating structures in linear detached plasmas using dynamic mode decomposition International conference

    H.Natsume, H.Tanaka, S.Kajita, N.Ohno

    PSI2020(The 24th International Conference on Plasma Surface Interactions in Controlled Fusion Devices)  2021.1.26 

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    Event date: 2021.1

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  134. Tungsten Fuzz: Depositionn Effects and Influence to Fusion Devices International conference

    S.Kajita, N.Ohno, N.Yoshida

    PSI2020(The 24th International Conference on Plasma Surface Interactions in Controlled Fusion Devices)  2021.1.25 

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    Event date: 2021.1

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  135. Role of molecular processes and target configuration on plasma detachment in GAMMA 10/PDX International conference

    N.Ezumi, T.Sugiyama, H.Gamo, Y.Takami, T.Iijima, K.Nojiri, T.Hara, Y.Ando, K.Honma, A.Kondo, M.Hirata, J.Kohagura, M.Yoshikawa, Y.Nakashima, M.Sakamoto, R.Perillo, H.Y.Guo, T.Kuwabara, H.Tanaka, N.Ohno, K.Sawada, S.Kado, A.Tonegawa, S.Masuzaki

    PSI2020(The 24th International Conference on Plasma Surface Interactions in Controlled Fusion Devices)  2021.1.28 

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    Event date: 2021.1

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  136. トーラス型プラズマ生成装置における窒素原子密度計測

    西尾亮祐、大野哲靖、梶田信、田中宏彦、浅岡晃次、堤隆嘉、堀勝

    プラズマ・核融合学会第37回年会  2020.12.1 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  137. GAMMA 10/PDXダイバータ模擬プラズマのV字ターゲット角度及び追加ガス入射位置による変化

    杉山吏作, 江角直道, 蒲生宙樹, 野尻訓平, 近藤綾音, 平田真史, 小波蔵純子, 吉川正志, 中嶋洋輔, 皇甫度均, 坂本瑞樹, H.Y. Guo, 桑原竜弥, 田中宏彦, 大野哲靖, 澤田圭司, 利根川昭, 増崎貴, 河村学思

    プラズマ・核融合学会第37回年会  2020.12.1 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  138. 原型炉級ダイバータ模擬実験に向けたTPD型定常高密度プラズマ源の開発状況

    江角直道、林祐貴、高木誠、大野哲靖、近藤綾音、利根川昭、澤田圭司、門信一郎、難波慎一、西島大輔、桑原竜弥、杉山吏作、蒲生宙樹、野尻訓平、坂本瑞樹、吉川正志、小波蔵純子、中嶋洋輔、田村直樹、浜地志憲、矢嶋美幸、増崎貴

    プラズマ・核融合学会第37回年会  2020.12.3 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  139. 直線型プラズマ装置CTP-Hにおけるプラズマ径に与える追加電極の効果

    近藤綾音、江角直道、杉山吏作、蒲生宙樹、野尻訓平、坂本瑞樹、林祐貴、利根川昭、大野哲靖、増崎貴

    プラズマ・核融合学会第37回年会  2020.12.3 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  140. QUESTにおいて壁からの水素再放出現象が長時間プラズマ放電に及ぼす影響とその抑制対策

    吉田直亮、島袋瞬、牟田口崇史、大宅諒、波多野雄治、大野哲靖、大矢恭久、花田和明、出射浩

    プラズマ・核融合学会第37回年会  2020.12.2 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  141. 間欠的ヘリウムプラズマ照射によるナノ構造Wの成長におけるアニーリングの影響

    鈴木啓吾、堺貴久、皇甫度均、坂本瑞樹、大野哲靖、竹田將生、折笠直輝

    プラズマ・核融合学会第37回年会  2020.12.2 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  142. NAGDIS-IIヘリウムプラズマ統合コード構築をめざした中性粒子輸送コードの整備

    増田翔太、右田龍星、澤田圭司、羽下健太、夏目祥揮、井戸太一、田中宏彦、大野哲靖

    プラズマ・核融合学会第37回年会  2020.12.2 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  143. ナノ構造タングステン上で誘起されるアークスポットの運動および分光計測

    皇甫度均、西島大輔、梶田信、R.P.Doerner、大野哲靖

    プラズマ・核融合学会第37回年会  2020.12.1 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  144. MATLAB/Simulinkを用いたHYBTOK-IIプラズマ水平位置制御器のモデルベース開発

    南宏樹、村山真道、筒井広明、飯尾俊二、柴田欣秀、渡邊清政、大野哲靖

    プラズマ・核融合学会第37回年会  2020.12.1 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  145. GAMMA 10/PDXダイバータ模擬実験における非接触プラズマ形成への水素ー窒素の混合比の影響

    蒲生宙樹、江角直道、杉山吏作、野尻訓平、近藤綾音、平田真史、小波蔵純子、吉川正志、中嶋洋輔、皇甫度均、坂本瑞樹、R.Perillo、桑原竜弥、田中宏彦、大野哲靖、澤田圭司、利根川昭、増崎貴

    プラズマ・核融合学会第37回年会  2020.12.1 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  146. ヘリウムプラズマにより誘起された巨大タングステンナノ構造のアニーリングによる形態変化

    奥山樹、梶田信、吉田直亮、田中宏彦、大野哲靖

    プラズマ・核融合学会第37回年会  2020.12.3 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  147. Magnum-PSI非接触プラズマ中における非拡散的輸送増大現象

    田中宏彦、林祐貴、梶田信、 H.J.van der Meiden、吉川正志、J.W.M.Vernimmen、J.Scholten, I.Classen, T.W.Morgan、大野哲靖

    プラズマ・核融合学会第37回年会  2020.12.2 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  148. 不純物添加ヘリウムプラズマ照射によるタングステン表面でのアーキング発生

    張容実、梶田信、皇甫度均、田中宏彦、大野哲靖

    プラズマ・核融合学会第37回年会  2020.12.3 

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  149. パルスプラズマ計測の高精度化と照射実験への応用

    細川直希、大野哲靖、田中宏彦、梶田信、秋山毅志

    プラズマ・核融合学会第37回年会  2020.12.2 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  150. LINDAコードを用いた水素原子・分子イオンが共存する非接触プラズマモデリング

    井戸太一、田中宏彦、大野哲靖、夏目祥揮、梶田信、澤田圭司、右田龍星、羽下健太、畑山明聖、星野一生

    プラズマ・核融合学会第37回年会  2020.12.2 

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  151. プラズマ誘起ナノ構造酸化タングステンの光触媒水分解への応用

    馮 双園、梶田 信、東 正信、Anja Bieberle、吉田朋子、大野哲靖

    プラズマ・核融合学会第37回年会  2020.12.2 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  152. ヘリウムプラズマ照射によるバナジウム薄膜の表面構造変化

    江田智樹、梶田信、大野哲靖、田中宏彦

    プラズマ・核融合学会第37回年会  2020.12.2 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  153. He-Ti共堆積環境下におけるナノ構造Ti薄膜形成と光触媒作用によるエチレン分解

    宮口和也、梶田信、安永円理子、吉田朋子、田中宏彦、大野哲靖

    プラズマ・核融合学会第37回年会  2020.12.2 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  154. 空間非一様な輸送係数を導入した非接触プラズマシミュレーション

    夏目祥揮、田中宏彦、梶田信、服部聖悟、井戸太一、大野哲靖

    プラズマ・核融合学会第37回年会  2020.12.1 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  155. NAGDIS-IIにおける水素プラズマのレーザートムソン散乱計測と放電特性

    今枝陽平、大野哲靖、梶田信、田中宏彦。服部聖悟、榊原武寛

    プラズマ・核融合学会第37回年会  2020.12.1 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  156. ヘリウムプラズマ再結合フロント構造への不純物ガス入射の影響

    服部聖悟、田中宏彦、梶田信、大野哲靖

    プラズマ・核融合学会第37回年会  2020.12.1 

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    Event date: 2020.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  157. Study of MHD spectroscopy by using RMP coils in small tokamak device HYBTOK-II International conference

    Y. Shibata, M. Okamoto, K.Y. Watanabe, N. Ohno, G. Matsunaga, Y. Kikuchi

    62nd Annual Meeting of the APS Division of Plasma Physics  2020.11.9 

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    Event date: 2020.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  158. Plasma analysis of the FAB source for the SAB process by PIC-MCC simulation International conference

    R.Morisaki, J.Sakura, C.Oka, T.Yamazaki, T.Hirai, T.Takahashi, H.Tsuji, N.Ohno, S.Hata

    33rd International Microprocesses and Nanotechnology Conference(MNC 2020)  2020.11.9 

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    Event date: 2020.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  159. Computer tomography on divertor impurity monitor for ITER including wall reflection effects International conference

    H. Natsume, S. Kajita, V.S. Neverov, R.I. Khusnutdinov, E. Veshchev, M. de Bock, H. Tanaka, N. Ohno, H. Ogawa, S. Kitazawa

    ITC29(The 29th International Toki Conference on Plasma and Fusion Research)  2020.10.27 

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    Event date: 2020.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  160. Study on heat pulse transport in detached recombining plasma in linear plasma device Magnum-PSI International conference

    Y. Hayashi, H. Tanaka, S. Kajita, N. Ohno, T.W. Morgan, H.J. van der Meiden, J. Scholten, J.W.M. Vernimmen

    ITC29(The 29th International Toki Conference on Plasma and Fusion Research)  2020.10.29 

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    Event date: 2020.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  161. Influence of nitrogen ratio during combined seeding with hydrogen on plasma detachment in the divertor simulation experimental module of GAMMA 10/PDX International conference

    H. Gamo, N. Ezumi, T. Sugiyama, K. Nojiri, A. Kondo, M. Hirata, J. Kohagura, M. Yoshikawa, Y. Nakashima, D. Hwangbo, M. Sakamoto, R. Perillo, T. Kuwabara, H. Tanaka, N. Ohno, K. Sawada, A. Tonegawa, S. Masuzaki

    ITC29(The 29th International Toki Conference on Plasma and Fusion Research)  2020.10.29 

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    Event date: 2020.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  162. Effects of V-shaped target angle on plasma behavior in the GAMMA 10/PDX divertor simulation experimental module International conference

    T. Sugiyama, N. Ezumi, H. Gamo, K. Nojiri, A. Kondo, M. Hirata, J. Kohagura, M. Yoshikawa, Y. Nakashima, D. Hwangbo, M. Sakamoto, H. Guo, T. Kuwabara, H. Tanaka, N. Ohno, K. Sawada, A. Tonegawa, S. Masuzaki, G. Kawamura

    ITC29(The 29th International Toki Conference on Plasma and Fusion Research)  2020.10.29 

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    Event date: 2020.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  163. Time resolve measuremejt of electron density and temperature by electrostatic probe with conditional averaging method in pulsed capacitively coupled plasma International conference

    S. Hattori, B.B. Sahu, H. Tanaka, T. Tsutsumi, S. Kajita, M. Sekine, M. Hori, N. Ohno

    ITC29(The 29th International Toki Conference on Plasma and Fusion Research)  2020.10.29 

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    Event date: 2020.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  164. Nitrogen Atom Density Measurements from Vacuum Ultraviolet Absorption Spectroscopy and Actionometry in Spiral Shape Plasma International conference

    R. Nishio, N. Ohno, S. Kajita, H. Tanaka, K. Asaoka, T. Tsutsumi, M. Hori

    ITC29(The 29th International Toki Conference on Plasma and Fusion Research)  2020.10.28 

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    Event date: 2020.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  165. Enhancemnet of arc ignition on tungsten in helium plasmas with impurity gases International conference

    R. Zhang, S. Kajita, D. Hwangbo, H. Tanaka, N. Ohno

    ITC29(The 29th International Toki Conference on Plasma and Fusion Research)  2020.10.27 

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    Event date: 2020.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  166. Conditional averaging measurement of spatiotemporal parameter dynamics during cross-field recombining-plasma ejection events International conference

    H.Tanaka, S.Kajita, N.Ohno

    AAPPS-DPP2020 as e-conference(4th Asia Pacific Conference on Plasma Physics)  2020.10.30 

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    Event date: 2020.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:China  

  167. Recent research progress on plasma detachment in divertor simulationexperiment in GAMMA 10/PDX: Role of molecular processes and target configuration International conference

    N. Ezumi, T. Sugiyama, H. Gamo, K. Nojiri, A. Kondo, M. Hirata, J. Kohagura, M. Yoshikawa, Y. Nakashima, M. Sakamoto, R. Perillo, H.Y. Guo, T. Kuwabara, H. Tanaka, N. Ohno, K. Sawada, S. Kado, A. Tonegawa, S. Masuzaki

    AAPPS-DPP2020 as e-conference(4th Asia Pacific Conference on Plasma Physics)  2020.10.30 

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    Event date: 2020.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  168. 照射欠陥導入タングステンへの重水素プラズマ照射による滞留挙動に及ぼす照射温度依存性

    山崎翔太, 小池彩華, 和田拓郎, 芦沢京祐, 趙明忠, 孫飛, 桑原竜弥, 吉田直亮, 波多野雄治, 外山健, 大野哲靖, 大矢恭久

    日本原子力学会2020年秋の大会  2020.9.16 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  169. プラズマ誘起ナノ構造酸化タングステンを用いた光電気化学特性

    馮双園・梶田信・東正信・BIEBERLE, Anja・吉田朋子・大野哲靖

    第126回触媒討論会  2020.9.17 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  170. プラズマ誘起ナノ構造を有する酸化チタン光触媒を用いたエチレン分解

    宮口和也・梶田信・田中宏彦・安永円理子・吉田朋子・大野哲靖

    第126回触媒討論会  2020.9.17 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:オンライン   Country:Japan  

  171. プラズマ解析による表面活性化接合用FAB源の高性能化

    森崎 諒, 櫻井 淳平, 岡 智絵美, 山崎 貴大, 平井 隆巳, 高橋 知典, 辻 裕之, 大野 哲靖, 秦 誠一

    一般社団法人 日本機械学会 2020年度年次大会  2020.9 

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    Event date: 2020.9

    Language:Japanese  

    DOI: 10.1299/jsmemecj.2020.J13105

  172. ヘリウムプラズマ誘起タングステン巨大ナノ構造形成とアニーリング効果

    奥山樹、梶田信、吉田直亮、田中宏彦、大野哲靖

    第81回応用物理学会秋季学術講演会  2020.9.9 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  173. The influence of impurities on the formation of nanocone structures on silicon surface irradiated by low energy helium plasma

    Q.Shi, S.Kajita, N.Ohno, M.Tokitani, D.Nagata, S.Feng

    2020.9.9 

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    Event date: 2020.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  174. プラズマ誘起ナノ構造酸化タングステン光触媒への貴金属担持効果

    冯双園、梶田信、吉田朋子、大野哲靖

    第125回触媒討論会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  175. ヘリウムプラズマ雰囲気での酸化チタン光触媒薄膜の作製とエチレン分解活性

    宮口和也、梶田信、田中宏彦、安永円理子、吉田朋子、大野哲靖

    第125回触媒討論会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  176. 重水素プラズマ照射タングステンにおける重水素滞留挙動に及ぼす照射温度影響

    山崎翔太、仲田萌子、小池彩華、和田拓郎、趙明忠、孫飛、桑原竜弥、外山健、大野哲靖、大矢恭久

    第51回日本原子力学会中部支部研究発表会 

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    Event date: 2019.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  177. レーザートムソン散乱計測法を用いた非接触プラズマのスケール長計測

    鷹野大輝、梶田信、田中宏彦、服部聖悟、今枝陽平、安原亮、大野哲靖

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  178. ヘリウムプラズマ雰囲気下でのチタン薄膜形成と光触媒活性

    宮口和也、梶田信、富田雄大、田中宏彦、大野哲靖

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  179. プラズマ誘起ナノ構造タングステン薄膜の作製と、白金担持量の光触媒活性への影響

    冯双園、梶田信、吉田朋子、大野哲靖

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  180. ダブルプローブとエミッシブプローブを用いた非接触プラズマ中の電子温度・プラズマ電位計測

    服部聖悟、田中宏彦、梶田信、鷹野大輝、佐伯勇弥、大野哲靖

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  181. 条件付き平均法を用いた吸収分光法による再結合プラズマ中の揺動計測

    松田悠、金森裕也、鷹野大輝、田中宏彦、梶田信、大野哲靖、荒巻光利

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  182. 小型トカマク装置HYBTOK-IIにおける外部摂動磁場を用いた能動的MHD診断法の開発

    柴田欣秀、岡本征晃、佐久間一行、松永剛、渡邊清政、大野哲靖、菊池祐介

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  183. 小型トカマクにおける積層セラミック製トリプルプローブアレイの試作と性能評価

    岡本征晃、柴田欣秀、渡邊清政、大野哲靖

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  184. GAMMA 10/PDX における窒素-水素複合入射による非接触プラズマ形成へのV字ターゲット角度の影響

    江角直道, 飯島貴朗, 野尻訓平, 寺門明紘, 原利樹, 安藤泰斗, 杉山吏作, 蒲生宙樹, 高見耀平, 本間佳史, 近藤綾音, 坂本瑞樹, 平田真史, 小波蔵純子, 吉川正志, 中嶋洋輔, R. Perillo, 桑原竜弥, 田中宏彦, 大野哲靖, 澤田圭司, 利根川昭, 増崎貴

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  185. ヘリウムプラズマ誘起巨大金属ナノ構造形成とその成長メカニズム

    奥山樹, 梶田信, 野嶋智宏, 吉田直亮, 山本悠太, 田中宏彦, 大野哲靖

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  186. LINDAコードによるNAGDIS-II非接触ヘリウムプラズマモデリングの高精度化

    佐伯勇弥、田中宏彦、大野哲靖、鷹野大輝、梶田信、澤田圭司、畑山明聖、星野一生、後藤基志

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  187. 不純物添加ヘリウムプラズマ照射によるnano-tendril bundles成長の入射イオンエネルギー依存性

    張容実、皇甫度均、梶田信、田中宏彦、大野哲靖

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  188. プラズマガン実験におけるレーザー干渉計精度低下要因の特定と対策

    細川直希、田中宏彦、梶田信、大野哲靖

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  189. トーラス型プラズマ装置を用いた解離性再結合により生成された窒素原子ラジカル密度の計測

    浅岡晃次、大野哲靖、梶田信、田中宏彦、西尾亮祐、林祐貴

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  190. 高密度プラズマ中で作成されたHe-W共堆積層の試料温度依存性

    浅井宏祐、吉田直亮、大野哲靖、梶田信、田中宏彦、矢嶋美幸

    プラズマ・核融合学会第36回年会 

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    Event date: 2019.11 - 2019.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  191. Inspection of Arc Trails Formed in Stellarator/Heliotron Devices W7-X and LHD International conference

    D.Hwangbo, S.Kajita, C.P.Dhard, M.Tokitani, M.Krause, D.Naujoks, S.Masuzaki, N.Ohno, S.Klose, The W7-X team

    ITC28(The 28th International Toki Conference on Plasma and Fusion Research) 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  192. Plasma detachment in divertor simulation experimental module of GAMMA 10/PDX: role of molecule gases International conference

    N.Ezumi, R.Perillo, T.Iijima, K.Nojiri, A.Terakado, M.Sakamoto, Y.Nakashima, M.Hirata, J.Kohagura, M.Yoshikawa, T.Hara, Y.Ando, H.Gamo, T.Sugiyama, Y.Takami, K.Honma, A.Kondo, T.Kuwabara, H.Tanaka, N.Ohno, K.Sawada, S.Kado, A.Tonegawa, S,Masuzaki

    ITC28(The 28th International Toki Conference on Plasma and Fusion Research) 

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    Event date: 2019.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  193. Study of the plasma reesponse on external RMP field in a small tokamak device HYBTOK-II International conference

    Y.Shibata, M.Okamoto, K.Watanabe, N.Ohno, Y.Kikuchi

    ITC28(The 28th International Toki Conference on Plasma and Fusion Research) 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  194. Simulation study of detached helium plasma in NAGDIS-II by using the fluid code LINDA International conference

    I.Saeki, H.Tanaka, N.Ohno, H.Takano, S.Kajita, K.Sawada, A.Hatakeyama, K.Hoshino, M.Goto

    ITC28(The 28th International Toki Conference on Plasma and Fusion Research) 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  195. Plasma potential measurements in detached plasmas by using electrostatic probes International conference

    S.Hattori, H.Tanaka, S.Kajita, H.Takano, I.Saeki, N.Ohno

    ITC28(The 28th International Toki Conference on Plasma and Fusion Research) 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  196. Measurement of Nitrogen Atom Density Generated by Spiral Shape Recombining Plasma International conference

    K.Asaoka, N.Ohno, S.Kajita, H.Tanaka, R.Nishio, Y.Hayashi

    ITC28(The 28th International Toki Conference on Plasma and Fusion Research) 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  197. Two-point measurements along the magnetic field in detached linear plasmas with laser Thomson scattering method International conference

    H.Takano, S.Kajita, H.Tanaka, S.Hattori, Y.Imaeda, N.Ohno

    ITC28(The 28th International Toki Conference on Plasma and Fusion Research) 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  198. The Formation of Cone Structure On Silicon Irradiated with Low Energy Helium Plasma: Flux and Sample Temperature Dependences International conference

    Q.Shi, S.Kajita, N.Ohno, M.Tokitani, D.Nagata

    ITC28(The 28th International Toki Conference on Plasma and Fusion Research) 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  199. Temperature dependence on co-deposition layer formed by sputtered tungsten and helium plasma International conference

    K.Asai, N.Yoshida, N.Ohno, S.Kajita, H.Tanaka, M.Yajima

    ITC28(The 28th International Toki Conference on Plasma and Fusion Research) 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  200. Study on nanostructured tungsten photocatalysts fabricated by helium plasma irradiation International conference

    T.Yoshida, K.Komori, M.Yamamoto, C.Tsukada, S.Ogawa, S.Kajita, N.Ohno, S.Yagi

    ICMass 2019(International Conference on Materials and Systems for Sustainability 2019) 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  201. Photocatalytic Decomposition of Ethylene by TiO2 Thin Films Formed Using Helium Plasma International conference

    K.Miyaguchi, S.Kajita, Y.Tomita, K.Asai, H.Tanaka, N.Ohno

    ICMass 2019(International Conference on Materials and Systems for Sustainability 2019) 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  202. Large-scale Fiberform Nanostructures in the Co-deposition Environment of Helium Plasma and Mo/Re Ions International conference

    T.Okuyama, S,Kajita, T.Nojima, N.Yoshida, Y.Yamamoto, H.Tanaka, N.Ohno

    ICMass 2019(International Conference on Materials and Systems for Sustainability 2019) 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  203. Effect of Incident Ion Energy on the Growth of Nano-Tendril Bundles under Impurity-Seeded Helium Plasma Exposure International conference

    R.Zhang, D.Hwangbo, S.Kjiata, H.Tanaka, N.Ohno

    ICMass 2019(International Conference on Materials and Systems for Sustainability 2019) 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  204. Upgrading of dc discharge system and diagnostics for plasma detachment study in linear plasma device NAGDIS-II International conference

    N.Ohno, S.Kajita, H.Tanaka, M.Takagi, N.Ezumi, M.Yoshikawa, Y.Hayashi, S.Masuzaki, M.Aramaki, H.J. van der Meiden

    PMIF2019(7th International Workshop on Plasma Material Interaction Facilities for Fusion Research) 

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    Event date: 2019.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  205. Plasma detachment caused by composite gas seeding in front of variable angle V-shaped target of GAMMA 10/PDX International conference

    N. Ezumi, T. Iijima, K. Nojiri, A. Terakado, T. Hara, Y. Ando, M. Sakamoto, M. Hirata, J. Kohagura, M. Yoshikawa, Y. Nakashima, R. Perillo, T. Kuwabara, H. Tanaka, N. Ohno, K. Sawada, A. Tonegawa, and S. Masuzaki

    PMIF2019(7th International Workshop on Plasma Material Interaction Facilities for Fusion Research) 

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    Event date: 2019.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  206. Deuterium retention behavior for plasma implanted W with damage various damage distribution International conference

    S.Yamazaki, A.Togari, M.Nakata, A.Koike, T.Wada, M.Zhao, F.Sun, T.Kuwabara, Y.Hatano, T.Toyama, N.Ohno, Y.Oya

    ISFNT14(14th International Symposium on Fusion Nuclear Technology) 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Budapest, HUNGARY   Country:Hungary  

  207. プラズマ改質ナノチタニア試料によるエチレン分解 International conference

    梶田信、富田雄大、宮口和也、安永円理子、吉田朋子、田中宏彦、大野哲靖

    第124回触媒討論会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  208. 鉄イオン照射量を変化させた14MeV中性子-鉄イオン複合照射タングステンへの重水素プラズマ照射による滞留挙動

    山崎翔太、仲田萌子、小池彩華、和田拓郎、趙明忠、孫飛、桑原竜弥、波多野雄治、外山健、大野哲靖、大矢恭久

    日本原子力学会2019年秋の大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  209. エミッシブプローブを用いた非接触プラズマ中のプラズマ電位計測 International conference

    服部聖悟、関真倫、田中宏彦、梶田信、佐伯勇弥、大野哲靖

    電気・電子・情報関係学会東海支部連合大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  210. ヘリウムプラズマ中でのチタン薄膜形成とエチレン分解による光触媒活性評価

    宮口和也、梶田信、富田雄大、田中宏彦、大野哲靖

    電気・電子・情報関係学会東海支部連合大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  211. レーザー干渉計を用いたプラズマガン実験の信頼性向上

    細川直希、田中宏彦、梶田信、大野哲靖

    電気・電子・情報関係学会東海支部連合大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  212. EMC3-EIRENE modeling of JT-60SA edge plasmas with/without RMP field International conference

    H. Tanaka, G. Kawamura, K. Hoshino, M. Kobayashi, G. Matsunaga, L. Lunt, Y. Feng, and N. Ohno

    PET2019(The 17th Plasma Edge Theory workshop on Plasma Edge Theory in Fusion Devices) 

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    Event date: 2019.8

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  213. Deposition effects on He induced fiberform nanostructure growth International conference

    S.Kajita, T.Nojima, T.Okuyama, N.Yoshida, Y.Yamamoto, N.Ohno

    MoD-PMI2019(4th International Workshop on Models and Data for Plasma-Material Interaction in Fusion Devices) 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  214. High Density and Low Temperature Nitrogen Plasmas for Nitrogen Atom Source International conference

    N.Ohno, K.Asaoka, S.Kajita, H.Tanaka, Y.Hayashi

    ISPlasma2019/IC-PLANTS2019 

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    Event date: 2019.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  215. Photocatalytic Application of helium plasma induced nanostructured WO3 International conference

    S.Feng, S.Kajita, Y.Tomita, T.Yoshida, N.Ohno

    ISPlasma2019/IC-PLANTS2019 

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    Event date: 2019.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  216. Enhanced Growth or Fiberform Nanostructures by He Plasma Irradiation International conference

    S.Kajita, S.Kawaguchi, N.Yoshida, T.Okuyama, T.Nojima, H.Tanaka, N.Ohno

    ISPlasma2019/IC-PLANTS2019 

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    Event date: 2019.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  217. 小型トカマクHYBTOK-IIにおけるプラズマ流速のプラズマパラメータ依存性

    横山哲士、渡邊清政、岡本征晃、徳澤季彦、大野哲靖

    日本物理学会第74回年次大会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:九州大学伊都キャンパス   Country:Japan  

  218. 多変量解析手法を用いたLHDダイバータフットプリント分布の特性化

    田中宏彦、増崎貴、河村学思、小林政弘、鈴木康浩、本島巌、村瀬尊則、森崎友宏、大野哲靖

    日本物理学会第74回年次大会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:九州大学伊都キャンパス   Country:Japan  

  219. レーザートムソン散乱計測による非接触プラズマ上・下流部の温度・密度計測

    鷹野大輝、大嶋啓嗣、梶田信、田中宏彦、大野哲靖

    第2回「境界プラズマ挙動の理解と異分野間融合による新展開」研究会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:核融合科学研究所   Country:Japan  

  220. LINDAコードを用いた直線装置における非接触ヘリウムプラズマシミュレーション

    佐伯勇弥,田中宏彦,大野哲靖,関真倫,鷹野大輝,梶田信,増崎貴,澤田圭司,畑山明聖,星野一生

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学   Country:Japan  

  221. ヘリウムプラズマ誘起ナノ構造酸化タングステンの光触媒応用

    馮双園,梶田信,富田雄大,吉田朋子,大野哲靖,田中宏彦

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学   Country:Japan  

  222. 再結合フロント近傍における多地点同時揺動計測と相関解析

    夏目祥揮,田中宏彦,梶田信,関倫真,大嶋啓嗣,大野哲靖,吉川正志,秋山毅志

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学   Country:Japan  

  223. 融点近傍におけるアルミニウムへのパルスプラズマ照射効果

    中森貴也,細川直希,大野哲靖,田中宏彦,梶田信,菊池祐介,秋山毅志

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学   Country:Japan  

  224. 大気および減圧プラズマ溶射法で作製したタングステン皮膜の水素同位体放出挙動

    樋口紘大,波多野雄治,吉田直亮,浅井宏祐,大野哲靖

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  225. 小型高密度プラズマ装置を用いたヘリウム-タングステン共堆積現象の解明

    浅井宏祐,大野哲靖,吉田直亮,梶田信,田中宏彦,本島厳

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学   Country:Japan  

  226. ヘリウムプラズマ照射によるナノ構造形成の金属種依存性

    野嶋智宏,梶田信,吉田直亮,山本悠太,大野哲靖,田中宏彦,時谷政行,永田大介,八木貴志

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学   Country:Japan  

  227. ヘリウムプラズマ照射を用いた繊維状ナノ構造酸化チタン薄膜光触媒の作製とエチレン分解

    富田雄大,梶田信,安永円理子,吉田朋子,大野哲靖,田中宏彦

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学   Country:Japan  

  228. トーラス型プラズマ装置を用いた窒素原子ラジカル源の開発

    浅岡晃次,大野哲靖,林祐貴,梶田信,田中宏彦

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学   Country:Japan  

  229. 条件付き平均法を用いた非接触プラズマ中の高時間分解トムソン散乱計測

    大嶋啓嗣,関真倫,梶田信,田中宏彦,大野哲靖

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学   Country:Japan  

  230. NAGDIS-IIにおけるレーザートムソン散乱計測法を用いた再結合フロント上・下流部のプラズマ計測

    鷹野大輝,梶田信,大嶋啓嗣,大野哲靖,田中宏彦,安原亮

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学   Country:Japan  

  231. レーザー吸収分光法を用いた非接触プラズマ中の準安定ヘリウム原子温度測定

    金森裕也,大嶋啓嗣,鷹野大輝,梶田信,田中宏彦,大野哲靖,荒巻光利

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学   Country:Japan  

  232. HYBTOK-IIトカマクにおける摂動磁場印可時のプラズマ応答に関する研究

    岡本征晃,大野哲靖,渡邊清政,榊原悟,西村征也

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学   Country:Japan  

  233. 再結合フロント近傍における非接触プラズマパラメータの時空間分布計測

    関真倫,大嶋啓嗣,田中宏彦,梶田信,大野哲靖,夏目祥揮

    第35回プラズマ・核融合学会年会 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪大学   Country:Japan  

  234. Study of the plasma response on external rotating RMP field in a small tokamak device HYBTOK-II International conference

    Y.Shibata, N.Yoshimoto, M.Okamoto, N.Ohno, Y.Kikuchi, K.Watanabe

    23rd workshop on MHD stability control 

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    Event date: 2018.11

    Language:English   Presentation type:Poster presentation  

    Venue:UCLA, U.S.A.   Country:United States  

  235. Synergistic effect of impurity and hydrogen gas puffs on plasma detachment in the GAMMA 10/PDX tandem mirror International conference

    N.Ezumi, T.Iijima, M.Sakamoto, Y.Nakashima, M.Hirata, M.Ichimura, T.Imai, T.Kariya, I.Katanuma, J.Kohagura, R.Minami, T.Numakura, M.Yoshikawa, S.Togo, M.S.Islam, M.M.Islam, K.Nojiri, A.Terakado, S.Jang, T.Yokodo, Y.Kinoshita, R.Ikezoe, A.Hatayama, K.Ichimura, S.Kado, S.Masuzaki, T.Nakano, N.Ohno, H.Tanaka, S.Sawada, A.Tonegawa

    IAEA-FEC2018 

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    Event date: 2018.10

    Language:English   Presentation type:Poster presentation  

    Venue:Gandhinagar, India   Country:India  

  236. タングステンナノ構造化による光学特性の変化

    中村浩章、浅野恵吾、安永卓生、梶田信、大野哲靖、吉田直亮

    日本AEM学会MAGDAコンファレンス(電磁現象及び電磁力に関するコンファレンス、Magnetodynamics Conference) 

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    Event date: 2018.10

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京理科大学   Country:Japan  

  237. Effect of damage introduction and He existence on D retention by high flux D plasma exposure International conference

    Y.Oya, K.Azuma, M.Nakata, O,Zhou, M.Zhao, A.Togari, T.Kuwabara, N.Ohno, M.Yajima, Y.Hatano, T.Toyama

    Inter-Academia 

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    Event date: 2018.9

    Language:English   Presentation type:Poster presentation  

    Country:Lithuania  

  238. Emission from Tungsten Nanostructured Tendril Bundles under Local Thermal Load International conference

    D.Sinelnikov, D.Bulgadaryan, D.Hwangbo, S.Kajita, V.Kumaev, N.Ohno

    ISDEIV2018  2018.9.23 

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    Event date: 2018.9

    Language:English   Presentation type:Poster presentation  

    Venue:Greifswald, Germany   Country:Germany  

    DOI: 10.1109/DEIV.2018.8537036

  239. Ignition and sustainment of arcing on nanostructured tungsten under plasma exposure International conference

    D.Hwangbo, D.Nishijima, S.A.Barengolts, S.Kajita, R.P.Doerner, H.Tanaka, N.Ohno

    ISDEIV2018 

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    Event date: 2018.9

    Language:English   Presentation type:Poster presentation  

    Venue:Greifswald, Germany   Country:Germany  

  240. Influences of fabrication conditions on hydrogen isotope retention in W coatings International conference

    K.Higuchi, Y.Hatano, Y.Hamaji, T.Murase, M.Tokitani, S.Masuzaki, N.Yoshida, T.Takabatake, N.Kuroki, I Fujita, K.Asai, N.Ohno

    SOFT(30th Symposium on Fusion Technology) 

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    Event date: 2018.9

    Language:English   Presentation type:Poster presentation  

    Country:Italy  

  241. INFLUENCES OF FABRICATION CONDITIONS ON HYDROGEN ISOTOPE RETENTION IN W COATINGS International conference

    K. Higuchi, Y. Hatano, Y. Hamaji, T. Murase, M. Tokitani, S. Masuzaki, N. Yoshida, T. Takabatake, N. Kuroki, I. Fujita, K. Asai, N. Ohno

    30th Symposium on Fusion Technology(SOFT) 

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    Event date: 2018.9

    Language:English   Presentation type:Poster presentation  

    Venue:Giardini Naxos, Sicily, ITLAY   Country:Italy  

  242. 核融合理工学分野の教育と人材育成

    大野哲靖、尾崎章、藤本望、深田智

    原子力学会2018年秋の大会核融合工学部会セッション 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:岡山大学   Country:Japan  

  243. タングステンフラクタル構造の光学応答シミュレーション

    中村浩章、浅野恵吾、安永卓生、梶田信、大野哲靖、吉田直亮

    日本応用数理学会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  244. Generation of high density and low temperature nitrogen plasmas with spiral structure and its application to niterogen atom source International conference

    N.Ohno, K.Asaoka, S.Kajita, H.Tanaka, Y.Hayashi

    OS2018 

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    Event date: 2018.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  245. Analysis of multipoint fluctuations in the transient discharge from attached to detached states in GAMMA 10/PDX International conference

    H.Tanaka, M.Sakamoto, N.Ezumi, K.Nojiri, A.Terakado, T.Mikami, Y.Kinoshita, K.Kobayashi, M.Yoshikawa, J.Kohagura, N.Ohno

    OS2018 

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    Event date: 2018.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  246. Development of the Thomson Scattering Measurement System for Diagnosing Upstream Plasma in NAGDIS-II International conference

    H.Takano, H.Ohshima, S.Kajita, H.Tanaka, N.Ohno

    OS2018 

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    Event date: 2018.8

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  247. Progress in steady-state high density TPD-type plasma source development for Demo divertor simulation experiment International conference

    N.Ezumi, T.Iijima, S.Masuzaki, A.Tonegawa, N.Ohno, K.Sawada, S.Kado, S.Namba, D.Nishijima, M.Takagi, S.Togo, M.Sakamoto, M.Yoshikawa, J.Kohagura, Y.Nakashima

    OS2018 

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    Event date: 2018.8

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  248. Novel nanostructurization method using helium plasmas:vanadium and niobium oxides for photocatalysis International conference

    S.Kajita, F.Mimuro, T.Yoshida, N.Ohno, N.Yoshida

    TOCAT8 

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    Event date: 2018.8

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  249. 中性子照射されたW-Re合金とK-doped Wの水素同位体吸蔵特性

    大宅諒, Lee Heun Tae, 中村揚, 伊東英貴, 桑原竜弥, 矢嶋美幸, 外山健, 鈴木克弥, 高木誠, 大野哲靖, 上田良夫, 波多野雄治

    第12回核融合エネルギー連合講演会 

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    Event date: 2018.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:ピアザ淡海(滋賀県)   Country:Japan  

  250. アルミニウム堆積層がタングステン材へのパルスプラズマ熱流入に与える影響

    中森貴也, 稲垣翔平, 大野哲靖, 梶田信, 田中宏彦, 菊池祐介, 秋山毅志

    第12回核融合エネルギー連合講演会 

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    Event date: 2018.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  251. トムソン散乱計測を用いた非接触プラズマにおける電子速度分布計測

    大嶋啓嗣, 梶田信, 田中宏彦, 関真倫, 大野哲靖, 秋山毅志

    第12回核融合エネルギー連合講演会 

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    Event date: 2018.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:ピアザ淡海(滋賀県)   Country:Japan  

  252. 再結合フロント近傍におけるプラズマパラメータ揺動の軸・径方向分布評価

    関真倫, 大嶋啓嗣, 田中宏彦, 梶田信, 大野哲靖, 夏目祥揮, 増崎貴

    第12回核融合エネルギー連合講演会 

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    Event date: 2018.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:ピアザ淡海(滋賀県)   Country:Japan  

  253. イオンセンシティブプローブを用いたGAMMA 10/PDXにおける非接触プラズマのイオン温度空間分布計測

    木下洋輔, 江角直道, 飯島貴明, 野尻訓平, 寺門明紘, 三上智弘, 小林楓, 坂本瑞樹, 東郷訓, 中嶋洋輔, 吉川正志, 小波蔵純子, 田中宏彦, 増崎貴

    第12回核融合エネルギー連合講演会 

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    Event date: 2018.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:ピアザ淡海(滋賀県)   Country:Japan  

  254. GAMMA 10/PDX接触・非接触状態遷移放電における多地点揺動解析

    田中宏彦, 坂本瑞樹, 江角直道, 野尻訓平, 寺門明紘, 三上智弘, 木下洋輔, 小林楓, 吉川正志, 小波蔵純子, 大野哲靖

    第12回核融合エネルギー連合講演会 

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    Event date: 2018.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:ピアザ淡海(滋賀県)   Country:Japan  

  255. 重水素プラズマ照射された中性子照射損傷タングステン材の昇温脱離スペクトル詳細解析

    大野哲靖, 足立博昭, 桑原竜弥, 高木誠, 矢嶋美幸, 波多野雄治, 外山 健, 鈴木克弥

    第12回核融合エネルギー連合講演会 

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    Event date: 2018.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  256. Growth process of nano-tendril bundles with sputtered tungsten International conference

    D.Hwangbo, S.Kajita, H.Tanaka, N.Ohno

    PSI2018 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Venue:Princeton University, U.S.A.   Country:United States  

  257. Opitical Property of Nanostructured Tungsten for Plasma Emission Light International conference

    H.Nakamura, M.Osaki, K.Asano, M.Yajima, S.Saito, N.Hatano, T.Yasunaga, S.Kajita, N.Ohno

    PSI2018 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Venue:Princeton University, U.S.A.   Country:United States  

  258. Influence of heavier impurity deposition on Cr sputtering under He plasma exposure in multiple linear plasma devices International conference

    D.Nishijima, A.Kreter, R.P.Doerner, M.J.Baldwin, D.Borodin, A.Eksaeva, D.Hwangbo, S.Kajita, M.Miyamoto, N.Ohno, A.Pospieszczyk, M.Rasinski, T.Schlummer, A.Terra

    PSI2018 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Venue:Princeton University, U.S.A.   Country:United States  

  259. Effects of Drift on the Divertor Plasma Transport in LHD International conference

    S.Masuzaki, H.Tanaka, M.Kobayashi, G.Kawamura, and the LHD experiment group

    PSI2018 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Venue:Princeton University, U.S.A.   Country:United States  

  260. Influence of recombination front region on plasma detachment in a linear divertor plasma simulator Invited International conference

    N.Ohno, Y.Hayashi, S.Kajita, H.Tanaka, H.Ohshima, M.Seki, K.Sawada, M.Aramaki, M.Yoshikawa, H.J.van der Meiden

    PSI2018 

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    Event date: 2018.6

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Princeton University, U.S.A.   Country:United States  

  261. Analysis of indefinite multi-peak divertor footprint with proper orthogonal decomposition International conference

    H.Tanaka, S.Masuzaki, M.Kobayashi, G.Kawamura, Y.Suzuki, T.Morisaki, N.Ohno, and LHD Experiment Group

    PSI2018 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Venue:Princeton University, U.S.A.   Country:United States  

  262. Directional growth of large scale nanostructures on metallic co-deposition layer International conference

    S.Kajita, S.Kawaguchi, N.Yoshida, N.Ohno

    PSI2018 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Venue:Princeton University, U.S.A.   Country:United States  

  263. Deuterium retention in neutron irradiated tungsten-rhenium alloy and potassium-doped tungsten International conference

    M.Oya, H.T.Lee, T.Yamane, A.Nakamura, H.Ito, T.Kuwabara, M.Yajima, T.Toyama, K.Suzuki, M.Takagi, N.Ohno, Y.Ueda, Y.Hatano

    PSI2018 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Venue:Princeton University, U.S.A.   Country:United States  

  264. Energy balance during detached plasma operation in the divertor simulation experimental module of GAMMA 10/PDX International conference

    N.Ezumi, Y.Kinoshita, K.Nojiri, T.Iijima, A.Terakado, T.Mikami, K.Kobayash, M.S.Islam, T.Yokodo, S.Togo, J.Kohagura, M.Yoshikawa, M.Sakamoto, Y.Nakashima, A.Tonegawa, K.Sawada, H.Tanaka, N.Ohno, S.Masuzaki

    PSI2018 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Venue:Princeton University, U.S.A.   Country:United States  

  265. Kinetics of Deuterium Penetration into Neutron-irradiated Tungsten International conference

    M.Yajima, Y.Hatano, N.Ohno, T.Kuwabara, T.Toyama, K.Suzukim M.Takagi

    PSI2018 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Venue:Princeton University, U.S.A.   Country:United States  

  266. Hydrogen retention in MeV ion irradiated (H, Fe, W) and neutron irradiated tungsten International conference

    Y.Ueda, H.T.Lee, K.Ibano, Y.Hatano, A.Kimura, N.Ohno, T.Toyama

    PSI2018 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

    Venue:Princeton University, U.S.A.   Country:United States  

  267. フラクタル構造を持つタングステンの光学応答のFDTDシミュレーション

    中村浩章, 尾碕真志, 浅野恵吾, 梶田信, 大野哲靖, 羽田野直道

    日本物理学会第73回年次大会 

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    Event date: 2018.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京理科大学野田キャンパス   Country:Japan  

  268. Fabrication of nanostructured TiO2 by He plasma irradiation International conference

    Y.Tomita, S.Kajita, E.Yasunaga, T.Yoshida, N.Ohno, H.Tanaka

    IS-PLASMA2018 

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    Event date: 2018.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  269. FDTD Simulation on Absorption of Electromagnetic Waves in Tungsten Photonic-fractals International conference

    H.Nakamura, M.Osaki, K.Asano, S.Saito, S.Kajita, N.Ohno

    IS-PLASMA2018 

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    Event date: 2018.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  270. He Plasma Irradiation to Noble Metals International conference

    T.Nojima, S.Kajita, N.Yoshida, N.Ohno, H.Tanaka, T.Akiyama, T.Yagi

    IS-PLASMA2018 

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    Event date: 2018.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  271. Morphology changes of platinum and tungsten carbide by He plasma irradiation International conference

    Y.Tomita, S.Kajita, N.Ohno, H.Tanaka, Y.Ichino

    ITC-26/APFA-11 

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    Event date: 2017.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  272. Optical Reflectance of Nano-structured Tungsten using FDTD simulation International conference

    M.Osaki, H.Nakamura, K.Asano, S.Saito, S.Kajita, N.Ohno

    ITC-26/APFA-11 

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    Event date: 2017.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  273. Simulation studies of the plasma vertical displacement event(VDE) and driven halo current in a tokamak DEMO reactor International conference

    Y.Shibata, S.Miyamoto, A.Matsuyama, N.Asakura, H.Tanaka, N.Ohno, Y.Sakamoto, V.Lukash, R.Khayrutdinov

    ITC-26/APFA-11 

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    Event date: 2017.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  274. Nanostructure growth on rhodium/ruthenium by the exposure to He plasma International conference

    T.Nojima, S.Kajita, N.Yoshida, S.Kawaguchi, N.Ohno, H.Tanaka, T.Akiyama, T.Yagi

    ITC-26/APFA-11 

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    Event date: 2017.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  275. NAGDIS-II非接触プラズマ中における電子温度・電子密度のトムソン散乱計測

    大嶋 啓嗣、梶田 信、田中 宏彦、大野 哲靖、Hennievan der Meiden、安原 亮、秋山 毅志、鈴木 健介、関 真倫、鷹野 大輝

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    Event date: 2017.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:姫路商工会議所   Country:Japan  

  276. 原型炉におけるパワー排出シナリオとダイバータ設計検討 International conference

    朝倉 伸幸、星野 一生、鈴木 哲、宇藤 裕康、染谷 洋二、徳永 晋介、工藤 広信、本間 裕樹、坂本 宜照、日渡 良爾、飛田 健次、江里 幸一郎、関 洋治、大野 哲靖、上田 良夫、原型炉設計合同特別チーム

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:姫路商工会議所   Country:Japan  

  277. 原型炉級ダイバータ模擬実験に向けたTPD型定常高密度プラズマ源の開発 International conference

    江角 直道、増崎 貴、利根川 昭、大野 哲靖、澤田 圭司、門 信一郎、難波 慎一、西島 大輔、飯島 貴朗、高木 誠、安藤 泰斗、東郷訓、木下 洋輔、小林 楓、野尻 訓平、寺門 明紘、三上 智弘、坂本瑞樹、吉川 正志、小波蔵 純子、池添 竜也、中嶋 洋輔

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:姫路商工会議所   Country:Japan  

  278. タングステン堆積環境下でのヘリウム照射効果 International conference

    梶田 信、河口 翔太、皇甫 度均、吉田 直亮、大野 哲靖

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:姫路商工会議所   Country:Japan  

  279. 筑波大学における大型タンデムミラー装置を用いたダイバータ模擬研究の最近の進展と将来計画 International conference

    中嶋 洋輔、坂本 瑞樹、江角 直道、飯島 貴朗、イスラム シャヒヌル、横土 敬幸、野尻 訓平、寺門 明紘、山下 双太郎、吉本 翼、朝倉 伸幸、市村 和也、大野 哲靖、門 信一郎、坂本 隆一、澤田 圭司、畑山 明聖、福本 正勝、松浦 寛人、片沼 伊佐夫、假家 強、小波蔵 純子、沼倉 友晴、平田 真史、南 龍太郎、吉川 正志、池添 竜也、東郷 訓、今井 剛、市村 真

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:姫路商工会議所   Country:Japan  

  280. 非接触ダイバータプラズマ物理研究の進展 International conference

    大野哲靖

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    Event date: 2017.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:姫路商工会議所   Country:Japan  

  281. ヘリウムプラズマ照射によるロジウム・ルテニウムの表面構造変化 International conference

    野嶋 智宏、梶田 信、吉田 直亮、河口 翔太、大野 哲靖、田中 宏彦、秋山 毅志、増崎 貴

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    Event date: 2017.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:姫路商工会議所   Country:Japan  

  282. 直線型装置における非接触プラズマの軸・径方向二次元パラメータ分布計測 International conference

    関 真倫、大野 哲靖、梶田 信、田中 宏彦、増崎 貴、大嶋 啓嗣、夏目 祥揮

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    Event date: 2017.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:姫路商工会議所   Country:Japan  

  283. V/Nbへのヘリウム照射効果と光照射水分解による水素生成 International conference

    梶田 信、吉田 朋子、三室 文明、大野 哲靖

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    Event date: 2017.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:姫路商工会議所   Country:Japan  

  284. NAGDIS-PGにおけるパルスプラズマ照射に伴うプラズマ-材料相互作用の高速計測 International conference

    中森 貴也、稲垣 翔平、大野 哲靖、梶田 信、田中 宏彦、菊池 祐介、秋山 毅志

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    Event date: 2017.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:姫路商工会議所   Country:Japan  

  285. EMC3-EIRENEコードを用いたJT-60SA周辺プラズマモデリング International conference

    田中 宏彦、河村 学思、松永 剛、星野 一生、小林 政弘、柴田 欣秀、林 祐貴、桑原 竜弥、大野 哲靖

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    Event date: 2017.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:姫路商工会議所   Country:Japan  

  286. Super-Xダイバータを模擬した局所的収縮磁場が再結合フロントに与える影響 International conference

    林 祐貴、大野 哲靖、梶田 信、田中 宏彦、関 真倫

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    Event date: 2017.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:姫路商工会議所   Country:Japan  

  287. Heプラズマ照射による白金と炭化タングステンの微細構造形成

    富田 雄大、梶田 信、大野 啓靖、田中 宏彦、安永 円理子、本島 厳

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    Event date: 2017.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:姫路商工会議所   Country:Japan  

  288. Investigation of deuterium retention in neutron-irradiated tungsten by utilizing compact divertor plasma simulator International conference

    N.Ohno

    PMIF2017 

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    Event date: 2017.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  289. Comprehensive study of plasma detachment in the linear plasma device NAGDIS-II International conference

    Y. Hayashi, N. Ohno, S. Kajita, H. Tanaka, H. Ohshima, M. Seki, H. Takano, H. Natsume, M. Aramaki, H. van der Meiden

    6th International Workshop on Plasma Material Interaction Facilities for Fusion Research (PMIF2017) 

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    Event date: 2017.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Tsukuba University   Country:Japan  

  290. Influence of high-Z impurity deporisition on Cr sputtering under He ploasma exposure in multiple linear plasma devices International conference

    D.Nishijima, A.Kreter, R.P.Doerner, M.J.Baldwin, D.Borodin, A.Eksaeva, D.Hwangbo, S.Kajita, M.Miyamoto, N.Ohno, A.Pospieszczyk, M.Rasinski, T.Schlummer, A.Terra

    6th International Workshop on Plasma Material Interaction Facilities for Fusion Research (PMIF2017) 

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    Event date: 2017.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Tsukuba University   Country:Japan  

  291. Multivariable data analysis for characterizing the divertor footprint profile in the LHD heliotron International conference

    H. Tanaka, S. Masuzaki, M. Kobayashi, G. Kawamura, G. Motojima, T. Murase, R. Sakamoto, T. Morisaki, N. Ohno, and LHD Experiment Group

    ISHW2017 

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    Event date: 2017.10

    Language:English   Presentation type:Poster presentation  

    Venue:Kyoto University   Country:Japan  

  292. Thomson Scattering Measurement of Helium Detached Plasmas in NAGDIS-II International conference

    H. Ohshima, S. Kajita, H. Tanaka, N. Ohno, H. van der Meiden, and R. Yasuhara

    ICMaSS 2017 

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    Event date: 2017.9 - 2017.10

    Language:English   Presentation type:Poster presentation  

    Venue:Nagoya University   Country:Japan  

  293. Formation of nanostructures on platinum thin film and tungsten carbide by helium plasma irradiation International conference

    Y. Tomita, S. Kajita, N. Ohno, H. Tanaka, and Y. Ichino

    ICMaSS 2017 

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    Event date: 2017.9 - 2017.10

    Language:English   Presentation type:Poster presentation  

    Venue:Nagoya University   Country:Japan  

  294. The Effect of Helium Plasma Irradiation on Rhodium and Ruthenium International conference

    T. Nojima, S. Kajita, N. Yoshida, S. Kawaguchi, N. Ohno, H. Tanaka, T. Akiyama

    ICMaSS 2017 

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    Event date: 2017.9 - 2017.10

    Language:English   Presentation type:Poster presentation  

    Venue:Nagoya University   Country:Japan  

  295. Challenge for Fusion Energy:High Priority Study on Divertor and Plasma-Material Interactions Invited International conference

    N.Ohno

    ICAFE2017(4th International Confrence on Advances in Electrical Engineering) 

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    Event date: 2017.9

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Bangladesh  

  296. Modeling of the linear plasma device NAGDIS-II with neutral gas puffing and pumping by using EMC3-EIRENE International conference

    Y. Hayashi, N. Ohno, T. Kuwabara, H. Tanaka, G. Kawamura, S. Kajita, T. Tsujihara, H. Ohshima, M. Aramaki, Y. Feng

    PET 16 

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    Event date: 2017.9

    Language:English   Presentation type:Poster presentation  

    Venue:Aix-Marseille University, France   Country:Japan  

  297. 不純物ガス雰囲気下におけるタングステン材の重水素吸蔵量のその場計測

    足立 博昭,大野 哲靖,梶田 信,桑原 竜弥,松波 紀明,本島 厳

    平成29年電気学会A部門大会 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:室蘭工業大学   Country:Japan  

  298. 小型トカマク装置 HYBTOK-II における外部摂動磁場 - プラズマ相互作用とプラズマ流の関係

    吉本 直哉,柴田 欣秀,岡本 征晃,大野 哲靖,梶田 信,田中 宏彦,松永 剛,菊池 祐介,佐久間 一行,榊原 悟

    平成29年電気学会A部門大会 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:室蘭工業大学   Country:Japan  

  299. 属堆積層がタングステン材へのパルスプラズマ熱流流入過程に与える影響の解明

    稲垣 翔平,中森 貴也,大野 哲靖,梶田 信,田中 宏彦,菊池 祐介,秋山 毅志

    平成29年電気学会A部門大会 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:室蘭工業大学   Country:Japan  

  300. e 原子線強度比法を用いた非接触プラズマの電子温度・密度評価

    鈴木 健介,梶田 信,大嶋 啓嗣,大野 哲靖,田中 宏彦,秋山 毅志

    平成29年電気学会A部門大会 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:室蘭工業大学   Country:Japan  

  301. ヘリウム入射イオンエネルギーのパルス的変化がタングステンナノ構造成長に与える影響

    河口 翔太,梶田 信,皇甫 度均,大野 哲靖,田中 宏彦,増﨑 貴

    平成29年電気学会A部門大会 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:室蘭工業大学   Country:Japan  

  302. ヘリウムプラズマ照射によるナノニオブ作製とその光触媒活性評価

    三室文明、梶田信、大野哲靖、吉田朋子

    第120回触媒討論会 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:愛媛大学   Country:Japan  

  303. Dynamic Behavior of Hydrogen Isotope Retention in Tungsten during and after Plasma Exposure Invited International conference

    N.Ohno, N.Matsunami, T.Kuwabara

    Ion-Surface Interactions ISI-2017 

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    Event date: 2017.8

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Russian Federation  

  304. Growth of nano-tendril bundles on tungsten in impurity-rich helium plasmas International conference

    D.Hwangbo, S.Kajita, S.Kawaguchi, H.Tanaka, N.Ohno

    ICPIG2017 

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    Event date: 2017.7

    Language:English   Presentation type:Poster presentation  

    Venue:Estoril, Portugal   Country:Portugal  

  305. Transition to detached plasma established by amplified resonant magnetic perturbation in LHD International conference

    Y.Narushima, M.Kobayashi, H.Tanaka, S.Sakakibara, Y.Takemura, K.Y.Watanabe, S.Ohdachi, Y.Suzuki, S.Masuzaki, N.Ohno, F.Castejon, D.Lopez-Bruna, the LHD Experiment Group

    EPS2017(European Physical Society Conference) 

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    Event date: 2017.6

    Language:English   Presentation type:Poster presentation  

    Venue:Belfast, Northern Ireland   Country:United Kingdom  

  306. Captureing of the enhanced cross-field transport localized in the recombining linear plasma International conference

    H.Tanaka, K.Takeyama, N.Ohno, M.Yoshikawa, S.Kajita, Y.Hayashi, Y.Tsuji

    APTWG 

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    Event date: 2017.6

    Language:English   Presentation type:Poster presentation  

    Venue:Nagoya University   Country:Japan  

  307. Plasma Exposure Time Dependence of Deuterium Retention in Neutron-irradiated Tungsten International conference

    M.Yajima, Y.Hatano, T.Kuwabara, T.Toyama, K.Suzuki, M.Takagi, H.Adachi, N.Ohno

    PFMC(16th International Conference on Plasma-Facing Materials and Components) 

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    Event date: 2017.5

    Language:English   Presentation type:Poster presentation  

    Venue:Zeughaus Neuss, Dusseldorf, Germany   Country:Germany  

  308. Plasma Characteristics in HYBTOK-II Tokamak with a Resonant Magnetic Perturbation Field International conference

    N.Yoshimoto, T.Ohno, M.Okamoto, Y.Shibata, N.Ohno, S.Kajita, G.Matsunaga, Y.Kikuchi, S.Sakakibara, K.Watanabe

    Fuzhou Workshop on edge plasma stability & transport 

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    Event date: 2017.3

    Language:English   Presentation type:Poster presentation  

    Venue:Fuzhou, China   Country:China  

  309. Elucidation of Characteristics of Hydrogen Isotope Retention in Tungsten International conference

    H.Adachi, R.Nakamura, N.Ohno, S.Kajita, T.Kuwabara, N.Matsunami

    Fuzhou Workshop on edge plasma stability & transport 

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    Event date: 2017.3

    Language:English   Presentation type:Poster presentation  

    Venue:Fuzhou, China   Country:China  

  310. Dynamic Behavior of Pulsed Heat Load onto Fuzz W and A1-coated W International conference

    S.Inagaki et al.

    Fuzhou Workshop on edge plasma stability & transport 

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    Event date: 2017.3

    Language:English   Presentation type:Poster presentation  

    Venue:Fuzhou, China   Country:China  

  311. Morphology changes of Niobium Surface irradiated with helium plasmas International conference

    F.Mimuro, S.Kajita, N.Ohno, T.Yoshida

    ISPlasma2017 

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    Event date: 2017.3

    Language:English   Presentation type:Poster presentation  

    Venue: Chubu University   Country:Japan  

  312. Laser diagnostics in low-temperature recombining helium plasmas International conference

    S.Kajita, T.Tsujihara, M.Aramaki, H.van der Meiden, H.Oshima, N.Ohno, R.Yasuhara, K.Fujii, T.Shikama

    ISPlasma2017 

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    Event date: 2017.3

    Language:English   Presentation type:Poster presentation  

    Venue:Chubu University   Country:Japan  

  313. Erosion properties of nanostructured tungsten by arcing under magnetic field International conference

    D.Hwangbo, S.Kajita, S.Kawaguchi, M.M.Tsventoukh, S.A.Barengolts, N.Ohno

    ISPlasma2017 

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    Event date: 2017.3

    Language:English   Presentation type:Poster presentation  

    Venue:Chubu University   Country:Japan  

  314. Effect of incident ion energy pulsation on tungsten nanostructure formation International conference

    S.Kawaguchi, S.Kajita, D.Hwangbo, N.Ohno

    ISPlasma2017 

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    Event date: 2017.3

    Language:English   Presentation type:Poster presentation  

    Venue:Chubu University   Country:Japan  

  315. Population distribution of helium atoms in H2-He mixture plasmas International conference

    K.Suzuki, S.Kajita, T.Tsujihara, N.Ohno, T.Iijima, T.Takimoto, A.Tonegawa

    ISPlasma2017 

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    Event date: 2017.3

    Language:English   Presentation type:Poster presentation  

    Venue:Chubu University   Country:Japan  

  316. 高熱流プラズマをガスで制御する:非接触プラズマ

    大野哲靖

    「自然科学における階層と全体」シンポジウム 

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    Event date: 2017.2

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue: 名古屋ルーセントタワー 16F ビジネスサポートセンター   Country:Japan  

  317. 核融合炉に向けたダイバータ研究開発の進展

    大野哲靖

    プラズマ・核融合学会九州・沖縄・山口支部第20回支部大会 

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    Event date: 2016.12

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:九州大学伊都キャンパス   Country:Japan  

  318. ヘリウムプラズマ照射による様々な金属のナノ構造化と光触媒応用

    梶田信、大野哲靖、吉田朋子、三室文明、野嶋智宏、河口翔太

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学青葉キャンパス   Country:Japan  

  319. ヘリウムプラズマ照射によるタングステンの熱伝導率の現象と核融合炉材への影響

    梶田信、八木貴志、小林謙一、時谷政行、大野哲靖

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北大学青葉キャンパス   Country:Japan  

  320. タングステン材における重水素吸蔵量の不純物添加効果のその場計測

    足立博昭、中村涼介、大野哲靖、梶田信、桑原竜弥、松波紀明

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北大学青葉キャンパス   Country:Japan  

  321. パルスプラズマーアブレーション材料表面相互作用における分光計測システム開発

    稲垣翔平、土門太、大野哲靖、梶田信

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北大学青葉キャンパス   Country:Japan  

  322. 小型トカマク装置HYBTOK-IIにおける外部共鳴摂動磁場印加時のプラズマ流および磁場分布計測

    吉本直哉、大野拓弥、岡本征晃、柴田欣秀、大野哲靖、梶田信、松永剛、菊池祐介、榊原悟、渡邊清政

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北大学青葉キャンパス   Country:Japan  

  323. 水素・ヘリウム混合プラズマにおけるヘリウム原子分光計測

    鈴木健介、辻原匡志、梶田信、大野哲靖、飯島貴朗、滝本壽来生、利根川昭

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北大学青葉キャンパス   Country:Japan  

  324. ニオブへのヘリウムプラズマ照射による表面構造変化及び光触媒応用

    三室文明、梶田信、大野哲靖、吉田朋子

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北大学青葉キャンパス   Country:Japan  

  325. 原型炉におけるディスラプションプラズマの検討

    柴田欣秀、清水星汰、松山顕之、朝倉伸幸、大野哲靖、坂本宜照

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北大学青葉キャンパス   Country:Japan  

  326. 入射イオンエネルギーの間歇的変化がタングステンナノ構造形成に与える影響

    河口翔太、梶田信、皇甫度均、大野哲靖

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北大学青葉キャンパス   Country:Japan  

  327. 分割エンドターゲットおよびマイクロ波干渉計を用いた非接触プラズマ中の揺動計測

    竹山紘平、大野哲靖、田中宏彦、吉川正志、梶田信

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北大学青葉キャンパス   Country:Japan  

  328. LHDにおけるネオン・窒素入射によるトロイダル対称・非対称なダイバータフラックス低減効果

    田中宏彦、河村学思、増崎貴、小林政弘、B.J.Peterson、向井清史、S.Dai,秋山毅志、坂本隆一、森崎友宏、大野哲靖、LHD実験グループ

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北大学青葉キャンパス   Country:Japan  

  329. 直線型プラズマ装置NAGDIS-IIにおける中性粒子バランスを考慮したEMC3-EIRENEシミュレーション

    桑原竜弥、田中宏彦、河村学思、関真倫、西方勇人、林祐貴、大野哲靖、小林政弘、FENG Yuhe

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北大学青葉キャンパス   Country:Japan  

  330. ナノ構造金属上で誘起されるアークの損傷評価および高電場下での点弧特性

    皇甫度均、梶田信、河口翔太、大野哲靖

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学青葉キャンパス   Country:Japan  

  331. LHDにおけるヘリウムの共堆積に関する研究

    矢嶋美幸、増崎貴、本島厳、大野哲靖、吉田直亮、時谷政行

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学青葉キャンパス   Country:Japan  

  332. 次期核融合装置に向けた定常高粒子束プラズマ環境下での非接触プラズマの熱・粒子輸送特性

    林祐貴、西方勇人、大野哲靖、梶田信、K.Jesko, H.J. vander Meiden, J.W.M.Vernimmen, T.W.Morgan

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学青葉キャンパス   Country:Japan  

  333. 筑波大学における大型直線装置を用いたダイバータ模擬研究の現状と将来計画

    中嶋洋輔、坂本瑞樹、江角直道、市村和也、M.S.Islam, M.M.Islam, 大内理人、福井良磨、横土敬幸、李冠億、野尻訓平、寺門明紘、大野哲靖、門信一郎、澤田圭司、庄司主、畑山明聖、福本正勝、朝倉伸幸、久保博孝、松浦寛人、今井剛、市村真、片沼伊佐夫、假家強、小波蔵純子、沼倉友晴、平田真史、南龍太郎、吉川正志、池添竜也、東郷訓

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学青葉キャンパス   Country:Japan  

  334. 1.5GW核融合原型炉における不純物放射シナリオとダイバータ設計

    朝倉伸幸、星野一生、徳永晋介、清水勝宏、坂本宜照、宇藤裕康、染谷洋二、本間裕貴、工藤広信、飛田健次、大野哲靖、原型炉設計合同特別チーム

    プラズマ・核融合学会第33回年会 

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    Event date: 2016.11 - 2016.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東北大学青葉キャンパス   Country:Japan  

  335. Investigation of Detached Recombining Plasmas in a Linear Device Pilot-PSI and its Impact on Plasma Detachment in Fusion Devices International conference

    Y.Hayashi, H.Nishikata, N.Ohno, S.Kajita, K.Jesko, H.Meiden, J.Vernimmen, T.W.Morgan, T.Iijima, A.Tonegawa, A.Okamoto, S.Kado

    FEC2016 

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    Event date: 2016.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  336. Effects of Modified Surfaces Produced at Plasma-Facing Surface on Hydrogen Istotopes and Helium Release Behaviour in the LHD International conference

    Y.Nobuta, S.Masuzaki, M.Tokitani, D.Nagata, N.Ashikawa, N.Yoshida, Y.Oya, M.Yajima, G.Motojima, H.Kasahara, M.Miyamoto, N.Ohno

    FEC2016 

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    Event date: 2016.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  337. Physics and Engineering Design Studies on Power Exhaust and Divertor for a 1.5 GW Fusion Power DEMO International conference

    N.Asakura, K.Hoshino, H.Utoh, Y.Someya, S.Tokunaga, S.Suzuki, K.Ezato, Y.Seki, H.Kudou, K.Shimizu, Y.Sakamoto, R.Hiwatari, K.Tobita, N.Ohno, Y.Ueda

    FEC2016 

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    Event date: 2016.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  338. Recent Progress of Divertor Simulation Research Using the GAMMA 10/PDX Tandem Mirror International conference

    Y.Nakashima, K.Ichimura, M.S.Islan, M.Sakamoto, N.Ezumi, M.Hirata, M.Ichimura, R.Ikezoe, T.Imai, T.Kariya, I.Katanuma, J.Kohagura, R.Minami, T.Numakura, M.Yoshikawa, M.M.Islam, K.Nojiri, K.Shimizu, A.Terakdo, N.Asakura, M.Fukumoto, A.Hatayama, Y.Hirooka, S.Kado, H.Kubo, S.Masuzaki, H.Matsuura, T.Nakano, S.Nagata, N.Nishino, N.Ohno, A.Sagara, K.Sawada, M.Shoji, A.Tonegawa, Y.Ueda

    FEC2016 

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    Event date: 2016.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  339. Experimental Observations and Modelling of Poloidal Asymmetries in Radiation Profiles during N2 Seeding Compared with Ne Seeding in LHD International conference

    B.Peterson, G.Kawamura, K.Mukai, S.Dai, S.Masuzaki, T.Akiyama, M.Kobayashi, H.Tanaka, S.N.Pandya, R.Sano, M.Goto, G.Motojima, R.Sakamoto, N.Ohno, T.Morisaki, J.Miyazawa

    FEC2016 

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    Event date: 2016.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  340. Observatons of Sustarined Phase Shifted Magnetic Islands from Externally Imposed m/n = 1/1 RMP in LHD International conference

    Y.Narushima, S.Sakakibara, Y.Suzuki, K.Watanabe, S.Ohdachi, Y.Takemura, M.Yoshinuma, K.Ida, F.Castejon, D.Lopez-Bruna, C.C.Hegna, M.Kobayashi, H.Tanaka, T.Akiyama, N.Ohno

    FEC2016 

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    Event date: 2016.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  341. Field Electron Emission from Metal Surfaces Irradiated with Helium Plasmas International conference

    D.Hwangbo, S.Kajita, N.Ohno, D.N.Sinelnikov

    ISDEIV2016 

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    Event date: 2016.9

    Language:English   Presentation type:Poster presentation  

    Country:China  

  342. Effect of Nanostructured Layer Thickness on Tungsten Surface on Cathode Spots Dynamics International conference

    S.A.Barengolts, M.M.Tsventoukh, S.Kajita, D.Hwangbo, N.Ohno

    ISDEIV2016 

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    Event date: 2016.9

    Language:English   Presentation type:Poster presentation  

    Country:China  

  343. Vacuum Breakdaown from Nanostructured Fuzzy Surfaces International conference

    D.N.Sinelnikov, D.G.Bulgadaryan, D.Hwangbo, S.Kajita, D.V.Kolodko, V.A.Kurnaev, N.Ohno

    ISDEIV2016 

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    Event date: 2016.9

    Language:English   Presentation type:Poster presentation  

    Country:China  

  344. 小型トカマク装置におけるトロイダル磁場変調の磁場構造への影響の評価

    大野拓弥、吉本直哉、大野哲靖、松永剛、菊池祐介、柴田欣秀、岡本征晃、梶田信、榊原悟、渡邊清政

    日本物理学会2016年秋季大会 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:金沢大学   Country:Japan  

  345. HeI23S-23P遷移を用いた非接触プラズマでのレーザー吸収分光法の適用

    辻原匡志、荒巻光利、梶田信、四竈泰一、大野哲靖

    平成28年度電気学会基礎材料共通部門大会 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:九州工業大学   Country:Japan  

  346. タングステン材における重水素吸蔵量の入射イオンエネルギー依存性

    中村涼介、大野哲靖、梶田信

    平成28年度電気学会基礎材料共通部門大会 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:九州工業大学   Country:Japan  

  347. ナノ構造タングステンのパルスプラズマ応答

    土門太、大野哲靖、梶田信、菊池祐介

    平成28年度電気学会基礎材料共通部門大会 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:九州工業大学   Country:Japan  

  348. Fluctuation Measurements in detached Plasma in the Linear Divertor Plasma Simulator by using a Microwave Interferometer International conference

    K.Takeyama, et al.

    8th Korea-Japan Seminar on Advanced Diagnostics for Steady-State Fusion Plasmas 

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    Event date: 2016.8

    Language:English   Presentation type:Poster presentation  

    Venue:Busan, Korea   Country:Korea, Republic of  

  349. Higher Precision of Double Probe Method for Plasmas Parameter measurement in Detached Plasmas International conference

    H.Nishikata, et al.

    8th Korea-Japan Seminar on Advanced Diagnostics for Steady-State Fusion Plasmas 

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    Event date: 2016.8

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  350. 成嶋吉朗、小林政弘、田中宏彦、榊原悟、鈴木康弘、渡邊清政、大舘聡、武村勇輝、秋山毅志、大野哲靖

    成嶋吉朗、小林政弘、田中宏彦、榊原悟、鈴木康弘、渡邊清政、大舘聡、武村勇輝、秋山毅志、大野哲靖

    第11回核融合エネルギー連合講演会 

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    Event date: 2016.7

    Language:Japanese   Presentation type:Poster presentation  

    Venue:九州大学伊都キャンパス   Country:Japan  

  351. 直線型ダイバータ模擬実験装置における再結合フロント近傍の揺動計測

    竹山紘平、大野哲靖、吉川正志、田中宏彦、梶田信

    第11回核融合エネルギー連合講演会 

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    Event date: 2016.7

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  352. 直線型ダイバータ模擬実験装置における磁場の発散・収縮過程と非接触プラズマ形成

    林祐貴、西方勇人、大野哲靖、梶田信、坂本瑞樹、江角直道

    第11回核融合エネルギー連合講演会 

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    Event date: 2016.7

    Language:English   Presentation type:Poster presentation  

    Venue:九州大学伊都キャンパス   Country:Japan  

  353. 非接触プラズマにおけるダブルプローブ計測の電極形状効果

    西方勇人、林祐貴、大野哲靖、梶田信

    第11回核融合エネルギー連合講演会 

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    Event date: 2016.7

    Language:Japanese   Presentation type:Poster presentation  

    Venue:九州大学伊都キャンパス   Country:Japan  

  354. ナノ構造金属材料の電解電子放出特性およびアーキングによる損耗 International conference

    皇甫度均、河口翔太、梶田信、大野哲靖、Dmitry Sinelnikov

    第11回核融合エネルギー連合講演会 

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    Event date: 2016.7

    Language:Japanese   Presentation type:Poster presentation  

    Venue:九州大学伊都キャンパス   Country:Japan  

  355. Structure of resonanto magnetic perturbation in LHD detachd plasma International conference

    Y.Narushima, M.Kobayashi, H.Tanaka, S.Sakakibara, Y.Suzuki, K.Y.Watanabe, S.Ohdachi, Y.Takemura, T.Akiyama, N.Ohno, F.Castejon, D.Lopez-Bruna, the LHD Experiment Group

    EPS2016 

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    Event date: 2016.7

    Language:English   Presentation type:Poster presentation  

    Country:Belgium  

  356. Transition to detached plasma established by amplified resonant magnetic perturbation in LHD International conference

    Y.Narushima, M.Kobayashi, H.Tanaka, S.Sakakibara, Y.Takeyama, K.Y.Watanabe, S.Ohdachi, Y.Suzuki, S.Masuzaki, N.Ohno, F.Castejon, D.Lopez-Bruna, and the LHD Experiment Group

    EPS2017 

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    Event date: 2016.6

    Language:English   Presentation type:Poster presentation  

    Venue:Belfast (Northern Ireland)   Country:Ireland  

  357. Application of laser absorption spectroscopy to low temperature recombining plasmas International conference

    T.Tsujihara, M.Aramaki, S.Kajita, T.Shikama, N.Ohno

    IPS2016 

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    Event date: 2016.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  358. Detailed analysis of dynamic behavior of deuterium retention in W International conference

    N.Ohno, T.Watanabe, T.Kaneko, S.Kajita, T.Kuwabara

    PSI2016 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Poster presentation  

    Country:Italy  

  359. Measurement of thermophysical property of tungsten nanostructured layer by pulsed light heating thermoreflectance method International conference

    S.Kajita, T.Yagi, K.Kobayashi, M.Tokitani, N.Ohno

    PSI2016 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Poster presentation  

    Country:Italy  

  360. Measuring He nano-bubble size and depth distributions with grazing incidence small angle x-ray scattiering and transmission electron microscopy International conference

    M.Thompson, R.Sakamoto, E.Bernard, R.Doerner, N.Ohno, N.Kirby, P.Kluth, D.Riley, C.Corr

    PSI2016 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  361. Erosion of nanostructured tungsten by ablation, sputtering and arcing International conference

    D.Hwangbo, S.Kawaguchi, S.Kajita, N.Ohno

    PSI2016 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Poster presentation  

    Country:Italy  

  362. Ion temperature measurement by using ion sensitive probe in detached recombining plasmas in the linear plasma device NAGDIS-II International conference

    Y.Hayashi, N.Ohno, S.Kajita, N.Ezumi

    PSI2016 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Poster presentation  

    Country:Italy  

  363. A particle-in-cell approach to particle flux shaping with a surface mask International conference

    G.Kawamura, N.Ohno, S.Takamura, Y.Tomita

    PSI2016 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Poster presentation  

    Country:Italy  

  364. Effects of modified surfaces produced at plasma-facing wall on hydrogen release behavior in the LHD International conference

    Y.Nobuta, S.Masuzaki, M.Tokitani, D.Nagata, N.Ashikawa, N.Yoshida, Y.Oya, M.Yajima, G.Motojima, H.Kasahara, M.Miyamoto, N.Ohno, Y.Yamauchi

    PSI2016 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  365. Initiation of unipolar arcing on nanostructured fuzzy surfaces International conference

    D.Sinelnikov, D.Bulgadaryan, D.Hwangbo, S.Kajita, D.Kolodko, V.Kurnaev, N.Ohno

    PSI2016 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  366. Impacts of nitrogen and neon seeding on the divertor particle and heat loads in LHD International conference

    H.Tanaka, S.Masuzaki, G.Kawamura, T.Akiyama, M.Kobayashi, B.J.Peterson, K.Mukai, R.Sano, S.N.Pandya, S.Dai, R.Sakamoto, T.Morisaki, N.Ohno, the LHD Experiment Group

    PSI2016 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Italy  

  367. Impact of gas injection on detached plasma formation in divertor simulation experiments using the GAMMA 10/PDX tandem mirror International conference

    Y.Nakashima, K.Ichimura, M.S.Islam, M.Sakamoto, N.Ezumi, K.Fukui, M.Hirata, M.Ichimura, R.Ikezoe, T.Imai, M.M.Islam, I.Katanuma, T.Kariya, J.Kohagura, R.Minami, K.Nojiri, T.Numakura, M.Ohuchi, K.Shimizu, A.Terakado, M.Yoshikawa, X.Wang, N.Asakura, M.Fukumoto, A.Hatayama, Y.Hirooka, S.Kado, H.Kubo, S.Masuzaki, H.Matsuura, T.Nakano, S.Nagata, N.Nishino, N.Ohno, A.Sagara, S.Sawada, M.SHoji, A.Tonegawa, Y.Ueda

    PSI2016 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Poster presentation  

    Country:Italy  

  368. Evaluation of ion temperature and its anisotropy using an ion sensitive probe in the divertor simulation plasma of GAMMA 10/PDX International conference

    N.Ezumi, K.Nojiri, A.Terakado, K.Ichimura, M.Sakamoto, K.Sawada, N.Ohno, H.Tanaka, M.Kobayashi, S.Masuzaki, Y.Nakashima

    PSI2016 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  369. Molecular activated recombination in divertor simulation plasma on GAMMA 10/PDX International conference

    M.Sakamoto, A.Terakado, K.Nojiri, N.Ezumi, Y.Nakashima, K.Oki, K.Ichimura, M.Fukumoto, K.Shimizu, K.Sawada, N.Ohno, S.Masuzaki, J.Kohagura, M.Yoshikawa

    PSI2016 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Poster presentation  

    Country:Italy  

  370. Simulation Studies of the Divertor Geometry and Plasma Parameters for 1.5GW Fusion Power Demo Reactor International conference

    N.Asakura, K.Hoshino, S.Tokunaga, K.Shimizu, H.Utoh, H.Kudou, N.Ohno and Joint Special Team for Demo Design

    PSI2016 

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    Event date: 2016.5 - 2016.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Italy  

  371. 綿毛状ナノ構造体層を形成したタングステン箔からのミュオニウム放出

    藪内敦、大野哲靖、三宅康博、池戸豊、下村浩一郎、西山樟生、小嶋健児、河村成肇、P.Strasser、藤森寛、牧村俊助、中村淳平、齊藤直人、三部勉、大谷将士、神田聡太郎、西村昇一郎、北村遼、長嶋泰之、鈴木卓爾、長友傑

    日本物理学会第71回年次大会 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北学院大学   Country:Japan  

  372. ヘリウムプラズマ照射による鉄及びニオブの表面構造変化

    梶田信、石田智哉、三室文明、大野哲靖

    第63回応用物理学会春季学術講演会 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京工業大学   Country:Japan  

  373. Fabrication of porous Fe and Nb by helium plasma irradiation International conference

    S.Kajita, T.Ishida, F.Mimuro, N.Ohno

    ISPlasma2016/IC-PLANTS2016 

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    Event date: 2016.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  374. Measurement of neutral temperature in detached plasmas in NAGDIS-II by laser absorption spectroscopy International conference

    T.Tsujihara, M.Aramaki, S.Kajita, N.Ohno

    ISPlasma2016/IC-PLANTS2016 

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    Event date: 2016.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  375. Measurement of atomic temperature in detached recombining plasma by laser absorption spectroscopy International conference

    T.Tsujihara, M.Arakaki, S.Kajita, N.Ohno

    ISETS'15 

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    Event date: 2015.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  376. レーザー吸収分光を用いた非接触プラズマ中の中性粒子温度計測

    辻原匡志、荒巻光利、梶田信、大野哲靖

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  377. ピコ秒パルス光加熱サーモリフレクタンス法によるナノ構造タングステンの熱拡散率計測

    梶田信、八木貴志、小林謙一、時谷政行、大野哲靖

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学   Country:Japan  

  378. RMPにより安定化されたLHD非接触プラズマ中のトロイダル異方性解析

    田中宏彦、大野哲靖、増崎貴、小林政弘、秋山毅志、森崎友宏、成嶋吉朗、本島巌、坂本隆一、辻義之、LHD実験グループ

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学   Country:Japan  

  379. 放射線管理区域内で運用可能な小型ダイバータプラズマ模擬装置の開発と性能試験

    大野哲靖、西村凌,桑原竜弥、高木誠、矢嶋美幸、中村涼介、梶田信、相良明男、時谷政行、栗下裕明、四竈樹男、外山健、吉田直亮

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学   Country:Japan  

  380. 境界領域プラズマにおけるイオン温度異方性の評価

    江角直道、野尻訓平、寺門明紘,成田昴平,田中裕樹、大久保克朗、伊能俊太朗、坂本瑞樹、中嶋洋輔、澤田圭司、大野哲靖、田中宏彦、小林政広、増崎貴

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学   Country:Japan  

  381. 大型タンデムミラーを用いた非接触プラズマ生成とその特性評価の進展

    中嶋洋輔、市村和也、M.S.Islam, M.M.Islam、清水啓太、大内理人、福井良磨、坂本瑞樹、江角直道、野尻訓平、寺門明紘、大野哲靖、門信一郎、澤田圭司、庄司主、畑山明聖、福本正勝、朝倉伸幸、久保博孝、松浦寛人、今井剛、市村真、片沼伊佐夫、假屋強、小波蔵純子、沼倉友晴、平田真史、南龍太郎、吉川正志、池添竜也、王小龍、荒井瑞穂、横土敬幸,大川和夫

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学   Country:Japan  

  382. 核融合出力1.5GWレベルの原型炉におけるダイバータの物理及び工学概念設計の現状

    朝倉伸幸、星野一生、宇藤裕康、染谷洋二、徳永晋介、清水勝宏、鈴木哲、飛田健次、大野哲靖、上田良夫、木村晃彦,日渡良爾、原型炉設計合同特別チーム

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  383. 小型トカマク装置におけるトロイダル磁場変調の周辺磁場構造への影響

    大野拓弥、鈴木陽介、林祐貴、大野哲靖、松永剛、菊池祐介、柴田欣秀、岡本征晃,梶田信、榊原悟、渡邊清政

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  384. タングステン材における重水素吸蔵量の経時変化

    中村涼介、大野哲靖、梶田信、桑原竜弥、金子達也

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  385. 非接触プラズマ計測における探針特性の異常性に関する装置間比較

    林祐貴、西方勇人、大野哲靖、恩田卓哉、梶田信

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  386. LHDプラズマ中の磁場島遷移時の磁気島構造

    成嶋吉朗、榊原悟、鈴木康浩、渡邊清政、大舘聡、武村勇輝、小林政広、田中宏彦、秋山毅志、大野哲靖

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  387. HYBTOK-IIトカマクにおける共鳴摂動磁場とMHD不安定性との相互作用に関する研究

    岡本征晃,林祐貴、鈴木陽介、大野拓弥、大野哲靖、柴田欣秀、菊池祐介、梶田信、榊原悟、渡邊清政

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:English   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  388. 定常・パルスプラズマ複合照射におけるAIコーティングWへの動的流入過程の解明

    佐藤大介、土門太、大野哲靖、梶田信、菊池祐介、佐久間一行,中園拓実

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  389. ナノ構造タングステンへのプラズマ熱パルス印加時の電位計測

    土門太、佐藤大介、大野哲靖、梶田信、菊池祐介、佐久間一行

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:English   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  390. 直線型ダイバータプラズマ模擬装置NAGDIS-IIにおけるEMC3-EIRENEシミュレーション

    桑原竜弥、田中宏彦、河村学思,西方勇人、大野哲靖、小林政広、Y.Feng

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:English   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  391. 直線型装置NAGDIS-IIにおける非接触プラズマ電離フロント近傍の揺動計測

    竹山紘平、大野哲靖、田中宏彦、梶田信、中嶋洋輔、坂本瑞樹、吉川正志、高木誠

    プラズマ核融合学会第32回年会 

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    Event date: 2015.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  392. The dust from arcing on nanostructured tungsten surface

    M.Yajima, N.Ohno, S.Masuzaki, S.Kajita, D.Aussems, H.van der Meiden, K.Bystrov, T.Morgan

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    Event date: 2015.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  393. Characterization of detached recombining plasma in Pilot-PSI International conference

    Y.Hayashi, K.Jesko, H.J.van der Meiden, J.Vemimmen, T.W.Morgan, N.Ohno, S.Kajita

    ITC25 

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    Event date: 2015.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  394. Observation of Plasma Dynamics in TPD-sheet IV International conference

    T.Onda, S.Kajita, A.Tonegawa, T.Iijima, N.Ohno

    ITC25 

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    Event date: 2015.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  395. Development of Compact Divertor Plasma Simulator for Advanced PMI Study International conference

    N.Ohno, R.Nishimura, T.Kuwabara, M.Takagi, T.Toyama, K.Suzuki, R.Nakamura, S.Kajita, A.Sagara, M.Tokitani, H.Kurisita, T.Shikama, N.Yoshida

    Workshop of TOHOKU university and SCK CEN at Tokyo 

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    Event date: 2015.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  396. Comparison between the D-module plasma of GAMMA 10/PDX and the divertor leg plasma of the Large Helical Device based on probe measurements International conference

    N.Ezumi, K.Nojiri, A.Terakado, K.Narita, M.Sakamoto, K.Sawada, N.Ohno, H.Tanaka, M.Kobayashi S.Masuzaki, Y.Nakashima

    PMIF2015 

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    Event date: 2015.10

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  397. Present Status of Compact Divertor Plasma Simulator(CPDS) for PMI study on Neutron-Irradiated Material International conference

    N.Ohno, T.Kuwabara, M.Takagi, R.Nishimura, S.Kajita, A.Sagara, M.Tokitani, T.Toyama, H.Kurishita, T.Shikama, K.Suzuki, N.Yoshida

    PMIF2015 

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    Event date: 2015.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Germany  

  398. Surface morphology changes and N doping on metals by plasma irradiation process International conference

    T.Ishida, S.Kajita

    AEPSE2015 

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    Event date: 2015.9

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  399. プラズマ照射プロセスによる金属の表面構造変化と窒素ドープ効果

    石田智哉、梶田信、吉田朋子、大野哲靖

    第116回触媒討論会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:三重大学   Country:Japan  

  400. 放射線管理区域内での小型高密度プラズマ照射装置の開発とタングステン材への適用

    西村凌,大野哲靖、高木誠、中村涼介、梶田信、桑原竜弥、相良明男、時谷政行、矢嶋美幸、栗下裕明、四竃樹男、外山健、吉田直亮

    平成27年電気学会基礎・材料・共通部門大会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:金沢大学   Country:Japan  

  401. Anisotropy of Ion Temperature Measured by using Ion Sensitive Probe International conference

    N.Ezumi, K.Nojiri, A.Terakado, K.Narita, M.Sakamoto, K.Sawada, N.Ohno, H.Tanaka, M.Kobayashi, S.Masuzaki, Y.Nakashima

    IWEP2015 

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    Event date: 2015.9

    Language:English   Presentation type:Poster presentation  

    Country:Bulgaria  

  402. 高熱流定常・パルスプラズマ照射時の金属材・プラズマ間相互作用の解明

    佐藤大介、土門太、大野哲靖、梶田信、菊池祐介、佐久間一行

    日本物理学会2015年秋季大会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:関西大学千里山キャンパス   Country:Japan  

  403. 小型トカマク装置を用いたトロイダル磁場変調によるプラズマ制御に関する検討

    鈴木陽介、林祐貴、大野拓弥、大野哲靖、松永剛、菊池祐介、柴田欣秀、岡本征晃、梶田信、榊原悟、渡邊清政

    日本物理学会2015年秋季大会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:関西大学千里山キャンパス   Country:Japan  

  404. 高熱流定常・パルスプラズマ照射時の金属材・プラズマ間相互作用の解明

    佐藤 大介, 土門 太, 大野 哲靖, 梶田 信, 菊池 祐介, 佐久間 一行

    日本物理学会2015年秋季大会  2015.9.18 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:関西大学  

    DOI: 10.11316/jpsgaiyo.70.2.0_668

  405. Conceptual Design Study of the Divertor and Power Exhaust for 1.5GW-level Fusion Power Demo Reactor International conference

    N.Asakura, K.Hoshino, H.Utoh, Y.Someya, K.Ezato, S.Suzuki, S.Tokunaga, K.Shimizu, Y.Sakamoto, M.Nakamura, K.Tobita, Y.Ueda, N.Ohno, A.Kimura

    12th International Symporium on Fusion Nuclear Technology(ISFNT-12) 

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    Event date: 2015.9

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  406. Detailed Analysis of Plasma Resistivity in Detached Plasmas International conference

    H.Nishikata, Y.Hayashi, N.Ohno, S.Kajita, T.Kuwabara

    PET15 

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    Event date: 2015.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  407. Photon Absorption Effects in DEMO Divertor Plasma International conference

    K.Hoshino, K.Sawada, R.Idei, N.Asakura, K.Shimizu, S.Tokunaga, N.Ohno

    PET15 

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    Event date: 2015.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  408. Mode structure analysis of detached plasma using a 2D image International conference

    T.Onda, N.Ohno, S.Kajita, H.Tanaka, T.Kuwabara

    PET15 

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    Event date: 2015.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  409. Modelling of the linear divertor plasma simulator NAGDIS-II by using EMC3-Eirene code International conference

    T.Kuwabara, H.Tanaka, G.Kawamura, N.Ohno, M.Kobayashi, Y.Feng

    PET15 

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    Event date: 2015.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  410. Statistical analysis of particle flux flowing into the end-target in between attached and detached states in the linear divertor plasma simulator NAGDIS-II International conference

    H.Tanaka, N.Ohno, T.Onda, S.Kajita, T.Kuwabara, Y.Tsuji

    PET15 

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    Event date: 2015.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  411. Plasma-Material Interaction: Fuzzy Nanostructure Formation by Helium Plasma Irradiation International conference

    A.M.Ito, T.Murashima, A.Takayama, T.Tamura, R.Kobayashi, S>Kajita, S.Takamura, N.Ohno, M.Yajima, Y.Yoshimoto, S.Ogata, H.Nakamura

    International Workshop on Warm Dense Matter 2015 

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    Event date: 2015.6

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  412. Contribution of Linear Plasma Devices in PMI Research International conference

    N.Ohno

    SOFE2015 

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    Event date: 2015.5 - 2015.6

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  413. ヘリウムプラズマ照射による金属表面構造変化とその応用

    大野哲靖

    先進プラズマプロセス研究会〜プラズマプロセスのフロンティア〜 

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    Event date: 2015.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:名古屋大学ベンチャービジネスラボラトリー   Country:Japan  

  414. Vapor shielding effects on tungsten surface damage exposed to plasma-gun generated ELM-like transient loads International conference

    Y.Kikuchi, I.Sakuma, Y.Asai, K.Onishi, W.Isono, T.Nakazono, M.Nakane, D.Sato, F.Domon, N.Ohno, N.Fukumoto, M.Nagata

    15th PFMC 

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    Event date: 2015.5

    Language:English   Presentation type:Poster presentation  

    Country:France  

  415. In-situ measurement of deuterium retention in tungsten material during plasma exposure International conference

    N.Ohno

    SWIP PMI Workshop 

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    Event date: 2015.4

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:China  

  416. Dynamic Behavior of he Floating Potential of Tungsten Sample in Steady State Plasma in Response to Plasmoid Irradiation International conference

    D.Sato, N.Ohno, S.Kajita, F.Domon, Y.Kikuchi, I.Sakuma

    ISPlasma2015/IC-PLANTS2015 

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  417. N Doping on He Plasma Irradiated Nanostructured Metal International conference

    T.Ishida, S.Kajita, N.Ohno, T.Yoshida, Y.Noiri

    ISPlasma2015/IC-PLANTS2015 

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  418. Dynamics of Sheet Plasmas Observed by a High-Speed Camera International conference

    T.Onda, S.Kajita, T.Iijima, A.Tonegawa, N.Ohno

    ISPlasma2015/IC-PLANTS2015 

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  419. プラズマ照射による金属のナノ構造化およびNドープ

    石田智哉、梶田信、大野哲靖、吉田朋子、小森勝之

    第115回触媒討論会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:成蹊大学   Country:Japan  

  420. 高密度ヘリウムプラズマ照射により形成されるナノ構造金属のフラクタル性

    梶田信、大野哲靖、辻義之

    日本物理学会第70回年次大会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:早稲田大学   Country:Japan  

  421. 高密度ヘリウムプラズマ照射により形成されるナノ構造金属のフラクタル性

    梶田 信, 大野 哲靖, 辻 義之

    日本物理学会第70回年次大会  2015.3.21 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:早稲田大学  

    DOI: 10.11316/jpsgaiyo.70.1.0_824

  422. 核融合におけるプラズマ・壁相互作用研究とタングステンへのヘリウムプラズマ照射効果

    大野哲靖、梶田信

    第30回九州・山口プラズマ研究会 

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    Event date: 2014.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:ラグナガーデンホテル・那覇市   Country:Japan  

  423. Non-Equilibrium and Extreme State Plasma -Experimental study of heat loads and damage to materials under steady/pulsed dual plasma- International conference

    D.Sato, N.Ohno, S.Kajita, Y.Kikuchi, I.Sakuma

    Plasma Conference 2014 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  424. Ion Temperature Measurement using Ion Sensitive Probe and Laser Induced Fluorescence in Recombining Plasma International conference

    N.Ezumi, S.Sakurai, H.Zainudin, Y.Hatada, T.Yoshida, K.Sawada, N.Ohno, H.Tanaka, M.Kobayashi, S.Masuzaki, Zh. Kiss'ovski,

    Plasma Conference 2014 

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    Event date: 2014.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  425. Arc spot grouping: an entanglement of arc spots International conference

    Shin Kajita,Dogyun Hwangbo,Noriyasu Ohno,Sergey A. Barengolts,Mikhail M. Tsventoukh

    Plasma Conference 2014 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  426. Development of Compact Divertor Plasma Simulator for Hot Laboratory International conference

    R.Nishimura, N.Ohno, M.Takagi, S.Kajaita, T.Kuwabara, A.Sagara, M.Tokitani, H.Kurishita, T.Shikama, N.Yosida,

    Plasma Conference 2014 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  427. Conceptual Design Study of an Advenaced Divertor, Short Super-X Divertor International conference

    N.Asakura, K.Hoshino, H.Utoh, K.Shinya, S.Tokunaga, K.Shimizu, Y.Someya, N.Ohno, K.Tobita

    Plasma Conference 2014 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  428. Morphology Changes of Metal Surfaces Irradiated by He Plasma and Effect of Nitrogen Injection International conference

    T.Ishida, S.Kajita, N.Ohno, T.Yoshida, K.Komori

    Plasma Conference 2014 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  429. Analysis of plasma fluctuation observed in low q tokamak HYBTOK-II with resonant magnetic perturbation International conference

    Y.Hayashi, Y.Suzuki, N.Ohno, M.Okamoto, Y.Kikuchi, S.Kajita, S.Sakakibara, Y.Suzuki, K.Watanabe, Y.Takemura

    Plasma Conference 2014 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  430. Correlation between plasma blob and its related structural change of plasma column in detached plasma International conference

    T.Onda, N.Ohno, S.Kajita, H.Tanaka, T.Kuwabara

    Plasma Conference 2014 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  431. Instability at the low-q operation in small tokamaks International conference

    Y.Suzuki, Y.Hayashi, N.Ohno, M.Okamoto, S.Kajita, S.Sakakibara, K.Watanabe

    Plasma Conference 2014 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  432. Analysis of Neutral Particle Distribution in the Closed Divertor Module in the Linear Plasma Device NAGDIS-II International conference

    M.Urakawa, N.Ohno, Y.Nakashima, M.Shoji,

    Plasma Conference 2014 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  433. EMC3-Eirene simulation modeling of linear divertor plasma simulators International conference

    T.Kuwabara, H.Tanaka, G.Kawamura, N.Ohno, M.Kobayashi, Y.Feng

    24th International Toki Conference 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  434. Initiation of arcing on tungsten electrode expsed to steady state plasmas International conference

    Y.Noiri, S.Kajita, N.Ohno

    24th International Toki Conference 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  435. Behavior of hydrogen isotpies in W under plasma exoisure with PS-DIBA device International conference

    T.Watanabe, T.Kaneko, N.Matsunami, N.Ohno, S.Kajita, T.Kuwabara

    24th International Toki Conference 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  436. Helium Plasma Implanted Metallic Nanostructures : growth process, fractality, and its applications International conference

    S.Kajita, N.Ohno, T.Yoshida, N.Yoshida

    24th International Toki Conference 

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    Event date: 2014.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  437. Reversal plasma flow measurement on detached plasma in linear divertor simulator NAGDIS-II International conference

    Y.Hayashi, N.Ohno, S.Kajita, T.Onda, H.Tanaka

    24th International Toki Conference 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  438. Initiation of arcing on fiberform nanostructured tungsten by the pulse plasma irradiation International conference

    M.Yajima, N.Ohno, S.Kajita, G.De Temmerman, K.Bystrov, S.Bardin, T.Morgan

    24th International Toki Conference 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  439. 3D Effects of Edge Magnetic Field Configuration on Divertor/SOL Transport and Optimization Possibilities for a Future Reactor International conference

    M.Kobayashi, K.Ida, Y.Feng, O.Schmitz, T.E.Evans, H.Ferichs, Y.Liang, P.Ghendrih, G.Ciraolo, A.Bader, H.Guo, F.Tabares, D.Tafalla, D.Reiter, Z.Cui, Y.Xu, U.Wenzel, N.Asakura, N.Ohno, S.Morita, S.Masuzaki, B.Peterson, K.Itoh, H.Yamada

    25th IAEA FUSION ENERGY CONFERENCE 

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    Event date: 2014.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Russian Federation  

  440. Contributions of Linear Plasma Devices to PMI Research International conference

    R.Doerner, G.De Temmerman, N.Ohno

    25th IAEA FUSION ENERGY CONFERENCE 

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    Event date: 2014.10

    Language:English   Presentation type:Poster presentation  

    Country:Russian Federation  

  441. Molecular Dynamics and Density Functional Simulations of Tungsten Nanostructure Formation by Helium Plasma Irradiation International conference

    A.M.Ito, A.Takayama, Y.Oda, T.Tamura, R.Kobayashi, T.Hattori, S.Ogata, N.Ohno, S.Kajita, M.Yajima, Y.Noiri, Y.Yoshimoto, S.Saito, S.Takamura, T.Murashima, M.Miyamato, H.Nakamura

    25th IAEA FUSION ENERGY CONFERENCE 

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    Event date: 2014.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  442. Development of Divertor Simulation Research in the GAMMA 10/PDX Tandem Mirror International conference

    Y.Nakashima, M.Sakamoto, M.Yoshikawa, K.Oki, H.Takeda, K.Ichimura, K.Hosoi, M.Hirata, M.Ichimura, R.Ikezoe, T.Imai, T.Kariya, I.Katanuma, J.Kohagura, R.Minami, T.Numakura, M.Iwamoto, Y.Hosoda, N.Asakura, M.Fukumoto, A.Hatayama, Y.Hirooka, S.Kado, H.Kubo, S.Masuzaki, H.Matsuura, S.Nagata, N.Nishino, N.Ohno, A.Sagara, T.Shikama, M.SHoji, A.Tonegawa, Y.Ueda

    25th IAEA FUSION ENERGY CONFERENCE 

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    Event date: 2014.10

    Language:English   Presentation type:Poster presentation  

    Country:Russian Federation  

  443. Physics and Engineering Studies of the Advanced Divertor for a Fusion Reactor International conference

    N.Asakura, K.Hoshino, H.Utoh, K.Shinya, N.Ohno, Y.Someya, S.Tokunaga, K.Shimizu, K.Tobita, M.Kobayasi, H.Tanaka

    25th IAEA FUSION ENERGY CONFERENCE 

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    Event date: 2014.10

    Language:English   Presentation type:Poster presentation  

    Country:Russian Federation  

  444. Plasma Structure Change and Intermittent Fluctuation near Magnetic Island X-Point under Detached Plasma Condition in LHD International conference

    N.Ohno, H.Tanaka, S.Masuzaki, M.Kobayashi, T.Akiyama, T.Morisaki, Y.Narushima, G.Motojima, Y.Tsuji

    25th IAEA FUSION ENERGY CONFERENCE 

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    Event date: 2014.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Russian Federation  

  445. Development of Impurity Seeding and Radiation Enhancement at Helical Divertor in LHD International conference

    K.Mukai, S.Masuzaki, B.Peterson, T.Akiyama, M.Kobayashi, H.Tanaka, S.Pandya, R.Sano, G.Motojima, N.Ohno, T.Morisaki, C.Suzuki, J.Miyazawa, N.Tamura

    25th IAEA FUSION ENERGY CONFERENCE 

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    Event date: 2014.10

    Language:English   Presentation type:Poster presentation  

    Country:Russian Federation  

  446. 小型ダイバータ模擬試験装置を用いた先進PWI研究

    大野哲靖

    第9回QUEST研究会 

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学応用力学研究所   Country:Japan  

  447. Correlation analysis of core and edge plasma fluctuations in GAMMA 10 International conference

    H.Tanaka, M.Sakamoto, K.Furutachi, K.Oki, M.Mizuguchi, Y.Nagatsuka, M.Yoshikawa, R.Nohara, M.Yoshikawa, J.Kohagura, N.Ohno, Y.Tsuji

    Open Magnetic Sysmtems for Plasma Confinement(OS 2014) 

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    Event date: 2014.8

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  448. イオンセンシティブプローブとレーザー誘起蛍光法による低温高密度磁化プラズマ中のイオン温度計測

    江角直道、櫻井駿、ハニフ・ザイヌディン、田中宏彦、増崎貴、大野哲靖

    平成26年度電気学会基礎・材料・共通(A)部門大会 

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    Event date: 2014.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:信州大学工学部   Country:Japan  

  449. Heプラズマ照射によるタンタルの表面構造変化

    石田智哉、梶田信、大野哲靖、吉田朋子

    平成26年度電気学会基礎・材料・共通(A)部門大会 

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    Event date: 2014.8

    Language:English   Presentation type:Poster presentation  

    Venue:信州大学工学部   Country:Japan  

  450. Molecular Dynamics and Monte-Carlo Hybrid Simulation for Tungsten Fuzzy Nano-structure Formation International conference

    A.M.Ito, Y.Oda, A.akayama, T.Tamura, R.Kobayashi, S.Ogata, N.Ohno, S.Kajita, M.Yajima, Y.Noiri, S.Saito, Y.Yoshimoto, S.Takamura, T.Murashima, H.Nakamura

    Computational Science Workshop 2014 

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    Event date: 2014.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  451. 小型トカマク装置における低モード数外部摂動磁場の径方向分布計測

    林祐貴、鈴木陽介、大野哲靖、岡本征晃、菊池祐介、榊原悟、渡邊清政、武村勇輝

    第10回核融合エネルギー連合講演会 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:エポカルつくば(茨城県つくば市)   Country:Japan  

  452. ヘリウムプラズマ照射による金属材料のナノ構造化とその応用

    梶田信、大野哲靖、吉田朋子

    第10回核融合エネルギー連合講演会 

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    Event date: 2014.6

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:エポカルつくば(茨城県つくば市)   Country:Japan  

  453. ISPとLIFによる境界領域プラズマのイオン温度計測

    江角直道、今井希和、澤田圭司、大野哲靖、田中宏彦、小林政弘、増崎貴、Zh. Kissovski

    第10回核融合エネルギー連合講演会 

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    Event date: 2014.6

    Language:English   Presentation type:Poster presentation  

    Venue:エポカルつくば(茨城県つくば市)   Country:Japan  

  454. 直線型装置におけるPlasma Blob伝搬挙動と発生時のプラズマ柱構造変化の高速度カメラ計

    恩田卓哉、大野哲靖、梶田信、田中宏彦、桑原竜弥、玉越晃和

    第10回核融合エネルギー連合講演会 

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    Event date: 2014.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:エポカルつくば(茨城県つくば市)   Country:Japan  

  455. 直線型ダイバータプラズマへのEMC3-EIRENEコードの適用

    田中宏彦、大野哲靖、桑原竜弥、裏川杜彦、小林政弘、河村学思、Feng Yuhe

    第10回核融合エネルギー連合講演会 

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    Event date: 2014.6

    Language:English   Presentation type:Poster presentation  

    Venue:エポカルつくば(茨城県つくば市)   Country:Japan  

  456. Impacts of 3D magnetic field sructure onn boundary & diveror plasmas in stellarator/heliotron devices International conference

    M.Kobayashi, Y.Feng, O.Schmitz, Y.Liang, T.E.Evans, H.Frerichs, Z.Y.Cui, D.Reiter, N.Asakura, U.Wenzel, S.Morita, K.Ida, H.Tanaka, S.Masuzaki, I.Yamada, B.J.Peterson, N.Ohno, S.Pandya, Y.Narushima, C.Suzuki, N.Tamura, T.Tokuzawa, K.Itoh, T.Akiyama, K.Tanaka, H.Yamada

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  457. Nanostructure growth and ignition of arcing by helium plasma irrdiation to tungsten in sputtering regime International conference

    Y.Noiri, S.Kajita, N.Ohno

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  458. Evaluation of ion temperature anisotropy on ion sensitive probe International conference

    N.Ezumi, K.Imai, R.Ohta, Y.Hatada, T.Yoshida, K.Sawada, N.Ohno, H.Tanaka, M.Kobayashi, S.Masuzaki, Zh.Kiss'ovski

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  459. Influence of external resonant magnetic perturbation field on edge plasma of small toakamk HYBTOK-II International conference

    Y.Hayashi, Y.Suzuki, N.Ohno, M.Okamoto, K.Watanabe, S.Sakakibara, Y.Takemura

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  460. Analysis for long-term global particle balance in LHD International conference

    G.Motojima, S.Masuzaki, M.Kobayashi, R.Sakamoto, T.Morisaki, J.Miyazawa, N.Suzuki, H.Furuta, T.Akiyama, N.Ohno, H.Yamada and LHD experiment group

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  461. Radiated power distributions in impurity-seeded plasma in LHD International conference

    T.Morisaki, K.Oyama, N.Tamura, S.Masuzaki, T.Akiyama, G.Motojima, J.Miyazawa, M.Kobayashi, B.J.Peterson, N.Ohno, H.Yamada and LHD Experiment Group

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  462. Multi-pin Langmuir probe measurement for identification of blob propagation characteristics in the Large Helical Device International conference

    H.Tanaka, S.Masuzaki, N.Ohno, T.Morisaki, Y.Tsuji, and LHD Experimental Group

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  463. Measurement of transient heat and particle loads in NAGDIS-PG International conference

    D.Sato, N.Ohno, M.Osaka, S.Kajita, Y.Kikuchi

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  464. Simulation study of power load reduction with impurity seeding in advanced divertor configurations for a tokamak reactor International conference

    N.Asakura, K.Hoshino, K.Shimizu, S.Tokunaga, K.Shinya, H.Utoh, N.Ohno

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  465. Progress of divertor simulation research toward the realization of detached plasma using a large tandem mirror device International conference

    Y.Nakashima, T.Takeda, K.Ichimura, K.Hosoi, K.Oki, M.Sakamoto, M.Hirata, M.Ichimura, R.Ikezoe, T.Imai, M.Iwamoto, Y.Hosoda, I Katanuma, T.Kariya, S.Kigure, J.Kohagura, R.Minami, T.Numakura, S.Takahashi, M.Yoshikawa, N.Asakura, M.Fukumoto, A.Hatayama, Y.Hirooka, S.Kado, H.Kubo, S.Masuzaki, H.Mtsuura, S.Nagata, N.Nishino, N.Ohno, A.Sagara, T.Shikama, M.SHoji, A.Tonegawa, Y.Ueda

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  466. Intermittnet behaviors of edge and divertor plasmas during detachment with RMP in LHD International conference

    T.Akiyama, S.Masuzaki, M.Kobayashi, H.Tanaka, S.Ohdachi, T.F.Ming, N.Tamura, K.Tanaka, G.Motojima, N.Ohno, LHD experiment group

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  467. Complete detachment of helical palsmas with the electron internal transport barrier sustained by electron cyclotron heating in LHD International conference

    J.Miyazawa, H.Tanaka, S.Masuzaki, T.Akiyama, G.Motojima, Y.Yoshimura, S.Kubo, T.Shimozuma, I.Yamada, N.Ohno and LHD Experiment Group

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  468. In-situ measurement of deuterium retention in W under plasma exposure International conference

    T.Watanabe, T.Kaneko, N.Matsunami, N.Ohno, S.Kajita, T.Kuwabara

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  469. Evolutiton of radiation profiles during detached plasmas and radiative collapse in LHD International conference

    S.N.Pandya, B.J.Peterson, R.Sano, K.Mukai, M.Kobayashi, J.Miyazawa, H.Tanaka, S.Masuzaki, T.Akiyama, G.Motojima, N.Ohno and LHD Experiment Group

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  470. Molecular dynamics research on formation mechanism of tungsten nanostructure induced by helium plasma irradiation International conference

    A.M.Itoh, A.Takayama, Y.Oda, T.Tamura, R.Kobayashi, T.Hattori, S.Ogata, N.Ohno, S.Kajita, M.Yajima, Y.Noiri, Y.Yoshimoto, S.Saito, S.Takamura, H.Nakamura

    PSI2014 

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    Event date: 2014.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  471. 定常プラズマ・熱パルス複合照射装置におけるプラズマ熱流計測

    大野哲靖、尾坂将史、佐藤大介、梶田信、菊池祐介、永田正義

    物理学会第69回年次大会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東海大学   Country:Japan  

  472. ヘリウム照射により発現するタングステンナノ構造の光触媒特性

    吉田 朋子, 小森 勝之, 八木 伸也, 矢嶋 美幸, 北岡 大輝, 梶田 信, 大野 哲靖

    日本物理学会第69回年次大会  2014.3.29 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東海大学  

    DOI: 10.11316/jpsgaiyo.69.1.2.0_270_1

  473. Plasma Dynamics in Detached Plasmas International conference

    A.Tamakoshi, T.Onda, N.Ohno, H.Tanaka, S.Kajita

    ISPlamsa2014 

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    Event date: 2014.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  474. Spectral Analysis of the Emission and Evaluation of the Heat Load Characteristics in NAGDIS-PG International conference

    M.Osaka, D.Sato, N.Ohno, S.Kajita,m T.Akiyama

    ISPlamsa2014 

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    Event date: 2014.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  475. Dependence of Detached Plasmaas Formation on Magnetic Connection Length International conference

    T.Yashiro, N.Ohno, S.Katjia, H.Kamaya, A,Tamakoshi, T.Onda

    ISPlamsa2014 

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    Event date: 2014.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  476. Physics and Engineering Studies of Advanced Divertors for Tokamak Demo Reactor International conference

    N.Asakura, K.Hoshino, H.Utoh, K.Shinya, Y.Someya, K.Shimizu, K.Tobita, S.Tokunaga, N.Ohno

    2nd IAEA DEMO Programme Workshop 

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:Austria  

  477. Growth of Tungsten Nanostructures Exposed to Helium Plasmas in Sputtering Regime International conference

    Y.Noiri, S.Kajita, N.Ohno

    ISETS'13  

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  478. Analysis of Fulcher-band Intensity of Molecular Hydrogen in the Divertor Plasma Simulator using Time Evolution Collisional-Radiative Model International conference

    T.Yashiro, K.Sawada, N.Ohno, S.Kajita, K.Taniguchi, S.Hidaka, S.Knowaki

    ISETS'13 

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  479. LHD非接触ダイバータ中の間欠的揺動伝搬とRMP印加磁場のトロイダル異方性解析

    田中宏彦、増崎貴、大野哲靖、小林政弘、秋山毅、森崎友宏、辻義之、LHD実験グループ

    プラズマ・核融合学会第30回年会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京工業大学   Country:Japan  

  480. Thermal response of nanostructured tungsten

    S.Kajita, G.De Temmerman, T.Morgan, T.de Kruif, S.van Eden, N.Ohno

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    Event date: 2013.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  481. LHDヘリカルダイバータにおけるデタッチメント時の熱・粒子負荷分布変化

    増崎貴、田中宏彦、小林政弘、大野哲靖、秋山毅志、本島巌、森崎友宏、河村学思、宮澤順一、LHD実験グループ

    プラズマ・核融合学会第30回年会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  482. 閉ダイバータモジュールへのDEGASコードの適用

    裏川杜彦、冨山貴史、大野哲靖、中嶋洋輔、庄司主、細井克洋

    プラズマ・核融合学会第30回年会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  483. ダイバータ熱負荷制御の課題

    大野哲靖

    プラズマ・核融合学会第30回年会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:東京工業大学   Country:Japan  

  484. LHDにおける閉ダイバータ実験2

    増崎貴、本島巌、庄司主、森崎友宏、大野哲靖、秋山毅志、田中宏彦、時谷政行、小林政弘、竹入康彦、山田弘司、小森彰夫、LHD実験グループ

    プラズマ・核融合学会第30回年会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京工業大学   Country:Japan  

  485. スパッタリング領域におけるヘリウムプラズマ照射時のアーク発生条件とタングステンナノ構造成長

    野杁泰幸、梶田信、大野哲靖

    プラズマ・核融合学会第30回年会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京工業大学   Country:Japan  

  486. プラズマ照射下でのタングステン中重水素吸蔵量のその場測定

    渡邉勇志、金子達也、松波紀明、大野哲靖、梶田信、桑原竜弥

    プラズマ・核融合学会第30回年会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京工業大学   Country:Japan  

  487. イオンセンシティブプローブ計測における温度異方性の評価

    江角直道、今井希和、太田良、畑田優馬、吉田智貴、澤田圭司、大野哲靖、田中宏彦、小林政弘、増崎貴、Zh.Kiss'ovski

    プラズマ・核融合学会第30回年会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学   Country:Japan  

  488. 低qトカマク放電プラズマにおける外部共鳴摂動磁場の径方向分布計測

    林祐貴、鈴木陽介、大野哲靖、岡本征晃、渡邊清政、武村勇輝

    プラズマ・核融合学会第30回年会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京工業大学   Country:Japan  

  489. 非円形断面小型トカマクの制作と調整運転

    畠山昭一、三浦弘雅、姚志鵬、筒井広明、飯尾俊二、柴田欣秀、大野哲靖、渡邊清政、秋山毅志

    プラズマ・核融合学会第30回年会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京工業大学   Country:Japan  

  490. 小型ダイバータプラズマ模擬試験装置を用いた先進プラズマー壁相互作用研究

    大野哲靖、高木誠、梶田信、松波紀明、相良明男、時谷政行、栗下裕明、四竃樹男、吉田直亮

    プラズマ・核融合学会第30回年会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  491. Multi-point analysis for understanding poloidal asymmetry of divertor flux in the Large Helical Device International conference

    H.Tanaka, S.Masuzaki, N.Ohno, M.Kobayashi, T.Morisaki, Y.Suzuki, LHD Experiment Group

    23rd International Toki Conference 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  492. 定常プラズマ・熱パルス複合照射環境下でのプラズマ・壁相互作用

    大野哲靖、梶田信、菊池祐介、永田正義

    日本物理学会2013年秋季大会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:徳島大学   Country:Japan  

  493. NAGDIS-PGにおける発光スペクトル解析

    尾坂将史、佐藤大介、大野哲靖、梶田信、秋山毅志

    日本物理学会2013年秋季大会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:徳島大学   Country:Japan  

  494. プラズマ照射環境下におけるタングステン中の重水素吸蔵のその場計測

    金子達也、渡邉勇志、松波紀明、大野哲靖、梶田信

    日本物理学会2013年秋季大会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:徳島大学   Country:Japan  

  495. ダイバータプラズマ模擬実験装置における非接触プラズマ形成の磁力線長依存性の調査

    八代崇憲、釜谷大樹、大野哲靖、梶田信

    日本物理学会2013年秋季大会  2013.9.28 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:徳島大学   Country:Japan  

    DOI: 10.11316/jpsgaiyo.68.2.2.0_203_2

  496. 直線型装置におけるPlasma Blob発生・輸送現象の高速カメラ計測

    玉越晃和、恩田卓哉、大野哲靖、田中宏彦、梶田信

    日本物理学会2013年秋季大会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:徳島大学   Country:Japan  

  497. Development of Compact Divertor Plasma Simulator and Its Application to Advanced Plasma-Wall Interaction Study International conference

    N.Ohno, M.Takagi, S.Kajita, N.Matsunami, S.Sagae, M.Tokitani, H.Kurishita, T.Shikama, N.Yoshida

    PMIF-PFC13 

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    Event date: 2013.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  498. Growth Equilibrium of Nanostructured Tungsten in Low Helium Flux Regime International conference

    S.Kajita, N.Ohno, M.Yajima

    PFMC2013 

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    Event date: 2013.5

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  499. Migration and Dissipation of He bubbles on Heated Nanostructured Tungsten International conference

    M.Yajima, S.Kajita, N.Ohno, M.Tokitani, N.Yoshida

    PFMC2013 

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    Event date: 2013.5

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  500. In-situ Measurement of Hydrogen Isotope Exchange under Plasma Exposure International conference

    N.Ohno, Y.Nakamura, M.Yamagiwa, T.Kaneko, N.Matsunami, S.Kajita, M.Takagi

    PFMC2013 

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    Event date: 2013.5

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  501. Migration and Dissipation of He bubbles on Heated Nanostructured Tungsten International conference

    M.Yajima, S.Kajita, N.Ohno, M.Tokitani, N.Yoshida

    PFMC2013 

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    Event date: 2013.5

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  502. ナノ構造タングステン上のアーキングの観測

    梶田信、皇甫度均、尾坂将史、大野哲靖

    日本物理学会第68回年次大会  2013.3.29 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:広島大学   Country:Japan  

    DOI: 10.11316/jpsgaiyo.68.1.2.0_305_1

  503. プラズモイドー定常高熱流プラズマ複合照射装置の開発及び磁化同軸プラズマガン装置の放電特性評価

    尾坂将史、二橋卓哉、大野哲靖、梶田信、菊池祐介

    平成25年電気学会全国大会 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  504. 高エネルギーヘリウムプラズマ照射によるタングステン表面の構造変化

    野杁泰幸、大野哲靖、梶田信、北岡大輝

    平成25年電気学会全国大会 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  505. Characteristic of He Bubble Disappearance in Tungsten Nanostructures by Thermal Annealing International conference

    M.Yajima, S.Kajita, N.Ohno, M.Tokitani, N.Yoshida

    IC-PLANTS2013 

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    Event date: 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  506. Influence of Hydrogen Isotope Retention on Secondary Electron Emission from Carbon Materials International conference

    T.Kaneko, M.Yamagiwa, Y.Nakamura, N.Matsunami, N.Ohno, S.Kajita

    IC-PLANTS2013 

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    Event date: 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  507. Study of hydrogen isotope exchange in graphite with PS-DIBA device International conference

    Y.Nakamura, M.Yamagiwa, T.Kaneko, N.Matsunami, N.Ohno, M.Takagi, S.Kajita, M.Tokitani, S.Masuzaki

    IC-PLANTS2013 

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    Event date: 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  508. Multi pulse laser damage threshold of Cu and Ag mirrors International conference

    M.Sato, S.Kajita, R.Yasuhara, N.Ohno, N.Yoshida, M.Tokitani, Y.Tawara

    IC-PLANTS2013 

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    Event date: 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  509. Atomic hydrogen density measurement in toroidal plasma device NAGDIS-T by vacuum ultraviolet absorption spectroscopy International conference

    S.Kajita, K.Takeda, K.Sakata, N.Ohno, M.Hori

    ISPlasma 2013 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  510. Ab-initio calculation of electronic density of states of amorphous carbon International conference

    A.Ito, A.Takayama, N.Ohno, H.Nakamura

    ISPlasma 2013 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  511. Nanostructurization of titanium exposed to helium plasmas and its photo-catalytic property International conference

    D.Kitaoka, S.Kajita, T.Yoshida, N.Ohno, N.Yoshida

    ISPlasma 2013 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  512. Spectroscopi study of arc spot initiated on nanostructured tungsten International conference

    D.Hwanbo, M.Osaka, S.Kajita, N.Ohno

    ISPlasma 2013 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  513. VDE-Free小型トカマク装置の設計・製作

    畠山昭一、筒井広明、飯尾俊二、嶋田隆一、柴田欣秀、大野哲靖、秋山毅、鈴木康浩、渡邉清正

    プラズマ核融合学会第29回年会 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:クローバープラザ(福岡県春日市)   Country:Japan  

  514. ダイバータプラズマ模擬実験装置における水素分子発光線解析

    八代崇憲、大野哲靖、梶田信、澤田圭司

    プラズマ核融合学会第29回年会 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:クローバープラザ(福岡県春日市)   Country:Japan  

  515. LHDにおける閉ダイバータ実験

    増崎貴、森崎友宏、庄司主、小林政弘、田中宏彦、時谷政行、本島巌、秋山毅志、大野哲靖、竹入康彦、山田宏司、小森彰夫

    プラズマ核融合学会第29回年会 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:クローバープラザ(福岡県春日市)   Country:Japan  

  516. 非対称複探針法を用いた非接触プラズマの計測

    玉越晃和、大野哲靖、梶田信、田中宏彦

    プラズマ核融合学会第29回年会 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:クローバープラザ(福岡県春日市)   Country:Japan  

  517. 高密度プラズマにおけるシュタルク効果とドップラー効果を利用した温度・密度計測

    尾坂将史、二橋卓哉、梶田信、大野哲靖

    プラズマ核融合学会第29回年会 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:クローバープラザ(福岡県春日市)   Country:Japan  

  518. LHDダイバータプラズマにおけるイオン・電子温度の密度依存性

    林祐貴、江角直道、増崎貴、田中宏彦、小林政弘、澤田圭司、大野哲靖、LHD実験グループ

    プラズマ核融合学会第29回年会 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:クローバープラザ(福岡県春日市)   Country:Japan  

  519. 熱アニーリングによるナノ構造中のHeバブル消失特性

    矢嶋美幸、吉田直亮、時谷政行、梶田信、大野哲靖

    プラズマ核融合学会第29回年会 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:クローバープラザ(福岡県春日市)   Country:Japan  

  520. イオン照射損傷を与えたタングステン中の動的重水素吸蔵計測

    山際正人、中村祐貴、金子達也、遠藤博史、松波紀明、高木誠、大野哲靖、梶田信、上田良夫

    プラズマ核融合学会第29回年会 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:クローバープラザ(福岡県春日市)   Country:Japan  

  521. プラズマ対向材への水素及び希ガスプラズマ照射下における重水素脱離挙動

    金子達也、山際正人、中村祐貴、松波紀明、大野哲靖、梶田信

    プラズマ核融合学会第29回年会 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:クローバープラザ(福岡県春日市)   Country:Japan  

  522. LHD周辺領域における多点静電揺動計測

    田中宏彦、増崎貴、大野哲靖、森崎友宏、小林政弘、辻義之、LHD実験グループ

    プラズマ核融合学会第29回年会 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:クローバープラザ(福岡県春日市)   Country:Japan  

  523. 大気圧プラズマ探針計測における中性粒子衝突の影響

    江角直道、高橋香織、林祐貴、内山千鶴、飯尾昭一郎、澤田圭司、大野哲靖、Zh.Kissfovski

    プラズマ核融合学会第29回年会 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:クローバープラザ(福岡県春日市)   Country:Japan  

  524. Correlation between detached plasmas and plasma response field International conference

    Y.Narushima, M.Kobayashi, T.Akiyama, S.Sakakibara, S.Masuzaki, N.Ashikawa, N.Ohno

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    Event date: 2012.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  525. Non-Diffusive Cross-Field Transport in the LHD Detached Divertor Plasma International conference

    H.Tanaka, N.Ohno, S.Masuzaki, T.Akiyama, M.Kobayashi, Y.Tsuji, LHD Experiment group

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    Event date: 2012.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  526. 炭素材料における水素吸蔵が二次電子放出特性に与える影響

    金子達也、山際正人、中村祐貴、松波紀明、大野哲靖、梶田信

    平成24年度電気関係学会東海支部連合大会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:豊橋技術科学大学   Country:Japan  

  527. 複探針法を用いた非接触プラズマ中の電子温度評価

    玉越晃和、岡崎克哉、大野哲靖、梶田信、田中宏彦

    平成24年度電気関係学会東海支部連合大会 

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    Event date: 2012.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:豊橋技術科学大学   Country:Japan  

  528. 磁化同軸プラズマガンにより生成されたプラズモイドのイオン温度計測

    尾坂将史、二橋卓哉、梶田信、大野哲靖

    平成24年度電気関係学会東海支部連合大会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:豊橋技術科学大学   Country:Japan  

  529. ダイバータプラズマ模擬実験装置NAGDIS-IIにおける水素分子発光線解析

    八代崇憲、大野哲靖、梶田信、澤田圭司、出井諒、谷口和成

    平成24年度電気関係学会東海支部連合大会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:豊橋技術科学大学   Country:Japan  

  530. Observation of Arc Spots Initiated on Nanostructured Tungsten International conference

    S.Kajita, N.Ohno, S.Takamura

    ISDEIV2012 

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    Event date: 2012.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  531. Development of Divertor Plasma Simulators and Studies of Edge Plasma and Plasma-Wall Interaction in Nagoya University International conference

    N.Ohno, S.Kajita, M.Takagi, S.Takamura

    OS2012(Joint conference of 9th International Conference on Open Magnetic Systems for Plasma Confinement) 

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    Event date: 2012.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  532. Investigation of Advanced Divertor Magnetic Configuration for Demo Tokamak Reactor International conference

    N.Asakura, K.Shinya, K.Tobita, K.Hoshino, N.Ohno et al.

    OS2012(Joint conference of 9th International Conference on Open Magnetic Systems for Plasma Confinement) 

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    Event date: 2012.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  533. Power Transmission Factor for Tungsten Target w/wo Fiber-Form Nanostructure in He Plasmas with Hot Electron Component using Compact Plasma Device AIT-PID International conference

    S.Takamura, T.Miyamoto, N.Ohno

    OS2012(Joint conference of 9th International Conference on Open Magnetic Systems for Plasma Confinement) 

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    Event date: 2012.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  534. Development of divertor simulator enabling simultaneous irradiation of steady-state high heat flux plasma and plasmoid International conference

    T.Nihashi, N.Ohno, S.Kajita, M.Osaka, M.Takagi, Y.Kikuchi, M.Nagata, T.Akiyama

    OS2012(Joint conference of 9th International Conference on Open Magnetic Systems for Plasma Confinement) 

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    Event date: 2012.8

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  535. Study of plasma detachment by enhancement of local recycling using the linear divertor simulator NAGDIS-II International conference

    T.Tomiyama, N.Ohno, S.Kajita, M.Takagi, M.Sakamoto, Y.Nakashima

    OS2012(Joint conference of 9th International Conference on Open Magnetic Systems for Plasma Confinement) 

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    Event date: 2012.8

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  536. 垂直位置安定と非円形断面を両立した小型トカマク装置の設計検討

    畠山昭一、三浦弘雅、南良貴、筒井広明、飯尾俊二、嶋田隆一、大野哲靖、柴田欣秀、秋山毅志、鈴木康浩、渡邊清政

    電気学会プラズマパルスパワー合同研究会 

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    Event date: 2012.8

    Language:Japanese   Presentation type:Poster presentation  

    Venue:岩手大学   Country:Japan  

  537. PS-DIBA装置を用いたプラズマ照射下での重水素吸蔵特性のその場計測

    大野哲靖

    第7回QUEST研究会 

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    Event date: 2012.7 - 2012.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学応用力学研究所   Country:Japan  

  538. 非接触プラズマ研究と課題

    大野哲靖

    平成24年度ダイバータおよびPWI合同研究会 

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    Event date: 2012.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:筑波大学   Country:Japan  

  539. Preliminary Experiments on the Vertical Stbility with Helical Coils in a Small Tokamak, HYBTOK-II International conference

    S.Hatakeyama, Y.Shibata, S.Kawakami, H.Tsutsui, S.Tsuji-Iio, R.Shimada, N.Ohno, T.Akiyama, Y.Suzuki, K.Y.Watanabe

    EPS2012 

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    Event date: 2012.7

    Language:English   Presentation type:Poster presentation  

    Country:Sweden  

  540. プラズマ照射下におけるグラファイトの重水素吸蔵特性の温度依存性

    中村祐貴、山際正人、金子達也、松波紀明、大野哲靖、高木誠、梶田信、時谷政行

    第9回核融合エネルギー連合講演会 

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    Event date: 2012.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:神戸国際会議場   Country:Japan  

  541. ヘリウムプラズマ照射によるチタンの表面構造変化と光触媒特性

    北岡大輝、梶田信、吉田朋子、大野哲靖、吉田直亮

    第9回核融合エネルギー連合講演会 

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    Event date: 2012.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:神戸国際会議場   Country:Japan  

  542. 直線型ダイバータ模擬装置を用いた局所リサイクリングによるプラズマデッタチメント研究

    冨山貴史、大野哲靖、梶田信、高木誠、坂本瑞樹、中嶋洋輔

    第9回核融合エネルギー連合講演会 

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    Event date: 2012.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:神戸国際会議場   Country:Japan  

  543. ナノ構造形成によるタングステン表面積増加が水素同位体保持におよぼす影響

    矢嶋美幸、波多野雄治、梶田信、石杰,大野哲靖

    第9回核融合エネルギー連合講演会 

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    Event date: 2012.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:神戸国際会議場   Country:Japan  

  544. トムソン散乱計測用金属ミラーのマルチパルスレーザー損傷閾値

    佐藤雅也、梶田信、大野哲靖、安原亮、時谷政行、田原譲

    第9回核融合エネルギー連合講演会 

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    Event date: 2012.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:神戸国際会議場   Country:Japan  

  545. ディスラプションコードを用いたJT-60Uのネオンガスパフディスラプション解析

    河上翔、大野哲靖、渡邊清正、柴田欣秀、梶田信、岡本征晃、宮本斉児、諫山明彦

    第9回核融合エネルギー連合講演会 

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    Event date: 2012.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:神戸国際会議場   Country:Japan  

  546. PS-DIBAを用いたタングステンの重水素吸蔵量その場計測

    山際正人、中村祐貴、金子達也、松波紀明、大野哲靖、高木誠、梶田信、時谷政行

    第9回核融合エネルギー連合講演会 

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    Event date: 2012.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:神戸国際会議場   Country:Japan  

  547. プラズモイドー定常高熱流プラズマ複合照射装置の開発及び磁化同軸プラズマガン装置の放電特性評価

    二橋卓哉、大野哲靖、梶田信、高木誠、菊池祐介、永田正義

    第9回核融合エネルギー連合講演会 

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    Event date: 2012.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:神戸国際会議場   Country:Japan  

  548. Recent Results of Divertor Simulation Research Using an End-cell of a Large Tandem Mirror Device International conference

    Y.Nakamura, H.Takeda, K.Ichimura, K.Hosoi, M.Sakamoto, M.Hirata, M.Ichimura, R.Ikezoe, T.Imai, T.Ishii, T.Kariya, I.Katanuma, J.Kohagura, R.Minami, T.Numakura, H.Ueda, M.Yoshikawa, N.Asakura, T.Furuta, A.Hatayama, Y.Hirooka, S.Kado, S.Masuzaki, H.Matsuura, S.Nagata, N.Nishino, N.Ohno, A.Sagara, T.Shikama, M.Shoji, M.Toma, A.Tonegawa, Y.Ueda

    20th International Conference on Plasma Surface Interactions in Fusion Devices(PSI2012) 

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    Event date: 2012.5

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  549. Edge and Divertor Plasma Measurement with Ion Sensitive and Mach Probes in LHD International conference

    Y.Hayashi, N.Ezumi, S.Masuzaki, H.Tanaka, M.Kobayashi, K.Sawada, N.Ohno, LHD Experimental Group

    20th International Conference on Plasma Surface Interactions in Fusion Devices(PSI2012) 

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    Event date: 2012.5

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  550. Hydrogen isotope retention in nanostructured tungsten International conference

    M.Yajima, J.Shi, Y.Hatano, S.Kajita, N.Ohno

    20th International Conference on Plasma Surface Interactions in Fusion Devices(PSI2012) 

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    Event date: 2012.5

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  551. Deuterium Retention in Low Activation Ferritic Steel Under Low Energy D-Plasma Exposure International conference

    Y.Sakuma, N.Matsunami, N.Ohno, M.Tokitani, S.Masuzaki

    20th International Conference on Plasma Surface Interactions in Fusion Devices(PSI2012) 

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    Event date: 2012.5

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  552. Study of Hydrogen Isotopes Behavior in Carbon Based Materials with In-Situ Ion Beam Analysis under Plasma Exposure International conference

    Y.Nakamura, M.Yamagiwa, N.Matsunami, N.Ohno, M.Takagi, S.Kajita, M.Tokitani, S.Masuzaki

    20th International Conference on Plasma Surface Interactions in Fusion Devices(PSI2012) 

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    Event date: 2012.5

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  553. Thermal Radiation Characteristices and Direct Evidence of Tungsten Cooling on the way to Nanostructure Formation on Its Surface International conference

    S.Takamura, T.Miyamoto, N.Ohno

    20th International Conference on Plasma Surface Interactions in Fusion Devices(PSI2012) 

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    Event date: 2012.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  554. Development of Steady/Transient Dual Plasma irradiation Device Using a Plasma Gun International conference

    S.Kajita, N.Ohno, T.Akiyama, T.Uchiyama, T.Nihashi, M.Osaka, Y.Kikuchi, M.Nagata

    20th International Conference on Plasma Surface Interactions in Fusion Devices(PSI2012) 

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    Event date: 2012.5

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  555. Intermittent Transport in the edge plasma with a 3-D Magnetic Geometry on the Large Helical Device International conference

    H.Tanaka, S.Masuzaki, N.Ohno, T.Morisaki, Y.Tsuji, LHD Experimental Group

    20th International Conference on Plasma Surface Interactions in Fusion Devices(PSI2012) 

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    Event date: 2012.5

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  556. Charge and current transport in open field lines turbulence: influence of plasma-surface boundary conditions International conference

    N.Ezumi, Y.Hayashi, K.Okazaki, H.Tanaka, S.Masuzaki, N.Ohno

    20th International Conference on Plasma Surface Interactions in Fusion Devices(PSI2012) 

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    Event date: 2012.5

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  557. Influence of crystal orientation on damages of tungsten exposed to helium plasma International conference

    N.Ohno, Y.HIrahata, M.Yamagiwa, S.Kajita, M.Takagi, N.Yoshida, R.Yoshihara, T.Tokunaga, M.Tokitani

    20th International Conference on Plasma Surface Interactions in Fusion Devices(PSI2012) 

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    Event date: 2012.5

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  558. 酸化鉄の低エネルギー重水素照射効果

    佐久間靖博,松波紀明,大野哲靖,時谷政行,増崎貴

    日本物理学会第67回年次大会 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:関西学院大学   Country:Japan  

  559. 簡易ヘリカルコイルによる自律的VDE制御

    畠山昭一,征矢正治,柴田浩平,宮浦崇,筒井広明,飯尾俊二,嶋田隆一,金沢由樹,柴田欣秀,河上翔,梶田信,大野哲靖,秋山毅,鈴木康浩,渡邊清政

    日本物理学会第67回年次大会  2012.3.26 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:関西学院大学   Country:Japan  

    DOI: 10.11316/jpsgaiyo.67.1.2.0_280_1

  560. LHD諸条件における周辺プラズマ揺動の統計的解析 International conference

    田中宏彦,増崎貴,大野哲靖,森崎友宏,辻義之,LHD実験グループ

    日本物理学会第67回年次大会 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:関西学院大学   Country:Japan  

  561. A Bridge between Fusion Plasma and Plasma Processing International conference

    N.Ohno

    IC-PLANTS 2012 

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    Event date: 2012.3

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  562. Formation of porus metallic nanocone array by helium plasma irradiation International conference

    S.Kajita, N.Yoshida, R.Yoshihara, N.Ohno

    ISPlasma 2012 

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    Event date: 2012.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  563. Surface morphology changes of titanium exposed to helium plasmas International conference

    D.Kitaoka, S.Kajita, N.Ohno, T.Yoshida

    ISPlasma 2012 

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    Event date: 2012.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  564. Release of a dust particle in plasma with electron beam component International conference

    M.Ueno, N.Ohno, Y.Tomita, G.Kawamura, M.Shindo

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  565. Revival of Arcing Issue in Fusion Reactors International conference

    S.Kajita, N.Ohno, S.Takamura, M.Tokitani, S.Masuzaki, N.Yoshida, T.Hatae, M.Fukumoto, K.Itami, T.Nakano, Y.Ueda

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  566. Operations of divertor heat load mitigation on LHD International conference

    N.Ohno, T.Akiyama, S.Masuzaki, M.Kobayashi, the LHD experimental group

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  567. Dynamics of Atomospheric Pressure Microwave Plasma Torch International conference

    N.Ezumi, T.Koide, Y.Hayashi, K.Akahane, S.Shiozawa, K.Sawada, N.Ohno

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  568. Study of plasma dynamics in attached and detached plasmas International conference

    K.Okazaki, H.Tanaka, N.Ohno, S.Kajita

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  569. 2-D effect of ion dynamics on radial profile of ion temperature in the edge of magnetized plasma International conference

    Y.Hayashi, N.Ezumi, H.Tanaka, K.Okazaki, N.Ohno

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  570. Design of a movable material probe system for PWI study in JT-60SA International conference

    S.Masuzaki, M.Tokitani, M.Miyamoto, Y.Nobuta, Y.Ueda, N.Ohno, M.Sakamoto, N.Ashikawa, T.Nakano, K.Itami

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  571. Evaluation of Carbon Erosion Process in Attached and Detached Deuterium Plasmas International conference

    M.Teraoka, N.Ohno, S.Kajita, A.M.Ito, H.Nakamura

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  572. Deuterium Retention of Tungsten with Surface Nanostructures International conference

    J.Shi, M.Yajima, Y.Hatano, T.Saeki, S.Kajita, N.Ohno

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  573. Simulation Study of Tungsten Materials Exposed to Helium/Neon/Argon Gas Based on Binary Collision Approximation Model International conference

    A.Takayama, S.Saito, A.M.Ito, N.Ohno, H.Nakamura

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  574. Durability to repeated pulse laser irradiation for laser transmission mirrors in ITER International conference

    M.Sato, S.Kajita, N.Ohno, R.Yasuhara, M.Tokitani, Y.Tawara

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  575. Gas retention in Tungsten exposed to Noble gas Plasmas International conference

    M.Yajima, M.Yamagiwa, S.Kajita, N.Ohno, M.Tokitani, N.Yoshida

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  576. Influence of crystalorientation on damages of tungsten exposed to helium plasma International conference

    Y.Hirahata, N.Ohno, M.Yamagiwa, S.Kajita, N.Yoshida, R.Yoshihara, T.Tokunaga, M.Tokitani

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  577. Development of Divertor Simulator Enabling Simultaneous Irradiation of Steady-State High Heat Flux Plasma and Plasmoid International conference

    T.Nihashi, N.Ohno, S>Kajita, T.Uchiyama, M.Takagi, Y.Kikuchi, K.Ikuta, T.Iwamoto, I.Sakuma, M.Nagata

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  578. Study of Hydrogen Istotopes Behavior in Graphite with PS-DIBA Device International conference

    Y.Nakamura, M.Yamagiwa, N.Matsunami, N.Ohno, M.Takagi, S.Kajita, N.Tokitani, S.Masuzaki

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  579. Generation of Detached Plasmas by using Simple Closed Divertor Module International conference

    T.Tomiyama, N.Ohno, S.Kajita, M.Takagi, M.Sakamoto, Y.Nakashima

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  580. Development of Noble DC Plasma Source for Divertor Simulation Study International conference

    M.Takagi, M.Yamagiwa, Y.Nakamura, T.Utiyama, M.Teraoka, S.Kajita, N.Ohno

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  581. Control of radiative/detached divertor operation with m/n=1/1 RMP applied to the stochastic layer of LHD International conference

    M.Kobayashi, S.Masuzaki, N.Ohno, T.Akiyama, Y.Narusima, B.J.Peterson, the LHD experimental group

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  582. Analysis of Current Quench of the JT-60U tokamak by using two dimensional MHD equilibrium calculation Code (DINA) International conference

    S.Kawakami, Y.Shibata, K.Watanabe, N.Ohno, S.Kajita, M.Okamoto, A.Isayama, N.Sugihara, Y.Kawano, V.E.Lukash, R.R.Khyarutdinov

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  583. Study of Plasma Collapse in Plasma Current Ramp-Down Phase of Tokamak and Helical Devices International conference

    Y.Shibata, K.Watanabe, N.Ohno, M.Okamoto, A.Isayama, Y.Kawano

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  584. Evaluation of MHD stabiligy of weak shear configuration in LHD plasma International conference

    M.Okamoto, K.Watanabe, S.Sakakibara, S.Ohdachi, Y.Narushima, M.Yoshinuma, K.Ida, Y.Shibata, N.Ohno

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  585. Experimental Investigation of Influence of Externally Applied Resonance Magnetic Perturbation on Magnetic Structure during Tokamak Disruption International conference

    Y.Kanazawa, Y.Shibata, M.Okamoto, N.Ohno, K.Watanabe, S.Kajita, Y.Kikuchi, H.Tanaka

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  586. Measurement of ion teperatures in plasma blobs by using statistical analysis methods International conference

    K.Okazaki, H.Tanaka, N.Ohno, N.Ezumi, Y.Tsuji, S.Kajita

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  587. Study of Intermittent Edge Plasma Transport in LHD International conference

    H.Tanaka, S.Masuzaki, N.Ohno, T.Morisaki, M.Kobayashi, Y.Tsuji, Y.Hayashi, N.Ezumi, LHD Experimental Group

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  588. Surface modification of titanium by the exposure to helium plasma International conference

    D.Kitaoka, S.Kajita, N.Ohno, T.Yoshida

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  589. Measurement of Plasmoid Characteristics using Interferometer International conference

    T.Uchiyama, T.Akiyama, T.Nihashi, S.Kajita, N.Ohno, Y.Kikuchi, N.Fukumoto, M.Nagata

    PLASMA 2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  590. ヘリウムプラズマ照射タングステンの触媒性能評価

    江藤玲央、吉田朋子、梶田信、大野哲靖、矢嶋美幸

    金属学会2011年度秋季大会 

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    Event date: 2011.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:沖縄コンベンションセンター(沖縄県)   Country:Japan  

  591. Comparison of Damages on Tungsten Surface Exposed to Noble Gas Plasmas International conference

    M.Yajima, M.Yamagiwa, Y.Nakamura, S.Kajita, N.Ohno, M.Tokitani, N.Yoshida

    APFA2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  592. PS-DIBA(Plasma Surface Dynamics with Ion Beam Analysis) device for in-stu measurement of deuterium retention under high heat flux plasma exposure International conference

    M.Yamagiwa, Y.Nakamura, N.Matsunami, N.Ohno, M.Takagi, S.Masuzaki, M.Tokitani, A.Sagara,

    APFA2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  593. Power Transmission and Thermal Emission Characteristics of Tungsten Surface with and without Helium Defects International conference

    S.Takamura, T.Miyamoto, J.Morisue, N.Ohno

    APFA2011 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  594. 炭素同素体への水素同位体照射シミュレーション

    中村浩章、米村幸朗、伊藤篤史、斎藤誠紀、高山有道、大野哲靖、梶田信

    日本物理学会2011年秋季大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:富山大学   Country:Japan  

  595. Statistical analysis of ejection property of plasma blobs from plasma column in the linear plasma device International conference

    H.Tanaka, N.Ohno, Y.Tsuji, S.Kajita

    PET-13 

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    Event date: 2011.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  596. Release condition of a metallic dust particle from plasma-facing wall International conference

    M.Ueno, N.Ohno, Y.Tomita, G.Kawamura

    PET-13 

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    Event date: 2011.9

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  597. Electric field at plasma-facing wall for double electron teperature International conference

    Y.Tomita, G.Kawamura, M.Ueno, N.Ohno, Z.H.Huang, Y.D.Pan, L.W.Yan

    PET-13 

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    Event date: 2011.9

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  598. Outstanding Properties of Tungsten Material with Fiber-form Nanostructured Subsurface for the Wall of Fusion Reactor International conference

    S.Takamura, T.Miyamoto, N.Ohno

    38th EPS Conference on Plasma Physics 

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    Event date: 2011.6 - 2011.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:France  

  599. Blob/hole generation near the divertor leg in LHD International conference

    H.Tanaka, N.Ohno, Y.Tsuji, S.Kajita, S.Masuzaki, M.Kobayashi, T.Morisaki, A.Komori

    1st APTWG International Conference 

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    Event date: 2011.6

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  600. Variation of reflectance and emittance of W duriing the helium irradiation International conference

    S.Kajita

    20th Meeting of the ITPA Topical Group on Diagnostics The Neterlands, May 23-26 2011 

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    Event date: 2011.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Netherlands  

  601. Recent Progress of Tungsten R&D for Fusion Application in Japan International conference

    Y.Ueda, H.T.Lee, N.Ohno, S.Kajita, A.Kimura, R.Kasada, T.Nagasaka, Y.Hatano, A.Hasegawa, H.Kurishita

    13th International Workshop on Plasma-Facing Materials and Components for Fusion Applications and 1st International Conference on Fusion Energy Materials Science 

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    Event date: 2011.5

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Germany  

  602. Deuterium-retention in iron oxides under low energy D2+-plasma exposure International conference

    T.Sogawa, N.Matsunami, N.Ohno, M.Tokitani, S.Masuzaki

    13th International Workshop on Plasma-Facing Materials and Components for Fusion Applications and 1st International Conference on Fusion Energy Materials Science 

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    Event date: 2011.5

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  603. In-situ measurement of hydrogen isotope retention using ion beam analyses during plasma exposure International conference

    M.Yamagiwa, Y.Nakamura, N.Matsunami, N.Ohno, S.Kajita, M.Takagi, M.Tokitani, S.Masuzaki, A.Sagara, K.Nishimura

    13th International Workshop on Plasma-Facing Materials and Components for Fusion Applications and 1st International Conference on Fusion Energy Materials Science 

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    Event date: 2011.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Germany  

  604. ダイヤモンド・グラファイトの水素同位体照射シミュレーション

    中村浩章,米村幸朗,伊藤篤史,斎藤誠紀,高山有道,大野哲靖,梶田信

    日本物理学会第66回年次大会 

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    Event date: 2011.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:新潟大学五十嵐キャンパス   Country:Japan  

  605. Helium plasma irradiation: a novel bottom-up approach for nanofabrication of metals International conference

    S.Kajita, T.Saeki, Y.Hirahata, M.Yajima, T.Yokochi, N.Ohno, R.Yoshihara, N.Yoshida

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    Event date: 2011.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  606. 熱・粒子制御に関連した周辺プラズマ物理現象

    大野哲靖

    第14回若手科学者によるプラズマ研究会 

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    Event date: 2011.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:日本原子力研究開発機構那珂核融合研究所   Country:Japan  

  607. Development of Fast Reciprocating Langmuir Probe System for Processing Plasmas International conference

    N.Ohno, M.Takagi, S.Kajita

    ISPlasmas2011 

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    Event date: 2011.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  608. Anisotropic Graphite Etching in Low-Temperature and High Density Deuterium Plasma International conference

    M.Teraoka, N.Ohno, S.Kajita, T.Nishiwaki, A.Ito, H.Nakamura

    ISPlasmas2011 

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    Event date: 2011.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  609. Infrared Radiation from Nanostructured Tungsten International conference

    S.Kajita, T.Yokochi, N.Ohno

    ISPlasmas2011 

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    Event date: 2011.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  610. Comparison of Plasma Etching between Center and Edge of High Oriented Pyrolytic Graphite Surface by Molecular Dynamics Simulation International conference

    A.Ito, A.Takayama, M.Teraoka, N.Ohno, S.Kajita, H.Nakamura

    ISPlasmas2011 

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    Event date: 2011.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  611. Sputtering on Carbon Materials by Hydrogen Isotope International conference

    S.Yonemura, S.Saito, A.Ito, A.Takayama, S.Kajita, N.Ohno, H.Nakamura

    ISPlasmas2011 

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    Event date: 2011.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  612. LHDにおける周辺プラズマ揺動解析

    田中宏彦,大野哲靖,辻義之,梶田信,増崎貴,小林政弘,森崎友宏,小森彰夫

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  613. 大気圧マイクロ波プラズマのプローブ計測における探針電極の影響

    江角直道,兒玉直人,赤羽和彦,塩沢慎也,澤田圭司,大野哲靖

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  614. トロイダル・ダイバータ模擬装置における熱パルス負荷印加時の接触・非接触プラズマの動的応答

    内山徹也,大野哲靖,梶田信,高木誠

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  615. プラズマ対向壁近傍における金属系ダストのダイナミックス解析

    上野昌史,冨田幸博,河村学思,浅野和仁,大野哲靖,梶田信

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  616. 黒色化ナノ構造タングステンの光学特性評価

    梶田信,佐伯翼,横地貴紀,大野哲靖,吉原麗子,吉田直亮

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  617. 磁化プラズマのイオン温度径方向分布におけるイオンダイナミクス効果

    江角直道,林祐貴,岡崎克哉,田中宏彦,大野哲靖

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  618. タングステン微細構造物が炭素堆積に与える影響

    宮田功一,塚谷康輔,Heun.T.Lee,大塚裕介,上田良夫,鳥養祐二,田口明,大野哲靖,梶田信

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  619. トカマクディスラプションへの回転ヘリカル摂動磁場印加の影響

    金沢由樹,柴田欣秀,岡本征晃,大野哲靖,渡邊清正,梶田信

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  620. JT-60U高βPプラズマ放電におけるマイナーコラプストメジャーディスラプション時の電流減衰時間の比較

    柴田 欣秀 ,渡邊 清政 ,大野 哲靖 ,岡本 征晃 ,諫山 明彦,栗原 研一,大山 直幸,仲野 友英,河野 康則,松永 剛,榊原 悟,杉原 正芳

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  621. 磁力線を横切って飛行するプラズマ小塊中のパラメータ計測

    岡崎克哉,田中宏彦,大野哲靖,辻義之,江角直道,梶田信

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  622. 高効率サーマルリチウムビーム源を用いたHYBTOK-IIディスラプションプラズマの電子密度分布計測

    眞鍋泰平,柴田欣秀,大野哲靖,高木誠,梶田信,森崎友宏

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  623. 輻射捕獲の効果を含む実用的ヘリウム線強度比法

    梶田信,大野哲靖

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  624. イオンビーム解析によるプラズマ照射環境下での水素同位体リテンション量その場計測

    山際正人,梶田信,高木誠,大野哲靖,松波紀明,時谷政行,増崎貴,芦川直子,相良明男,西村清彦

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  625. プラズモイドー定常高熱流プラズマ複合照射装置にむけたプラズマガンの開発

    永田正義,菊池祐介,福本直之,生田恭平,上野有輝,上野昌史,内山徹也,梶田信,大野哲靖

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  626.  非接触重水素プラズマ中での炭素材損耗過程の評価

    寺岡正広,大野哲靖,梶田信,西脇敏弘,米村幸朗,伊藤篤史,中村浩章,斉藤誠紀,高山有道

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  627. タングステンヘリウムバブル・ナノ構造形成に対する結晶方位の影響

    平畑佑樹,大野哲靖,佐伯翼,山際正人,梶田信,吉田直亮,吉原麗子,時谷政行

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  628. ヘリウム損傷タングステンの表面特性とその修復

    宮本隆徳,高村秀一,恵比根拓也,成瀬貴臣,森本泰介,大野哲靖

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  629. 希ガスプラズマ照射によるタングステンの表面損傷

    矢嶋美幸,山際正人,梶田信,大野哲靖,時谷政行,吉田直亮

    第27回プラズマ・核融合学会年会 

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    Event date: 2010.11 - 2010.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  630. Dust transport study in JT-60U experiment and investigation of the dust property by post-campaign sampling International conference

    N.Asakura T.Hayashi, N.Ashikawa, T.Hatae, Y.Tanaka, A.Yu. Pigarovm M.Fukumoto, T.Nakano, Y.Uesugi, N.Ohno

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    Event date: 2010.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  631. Dynamics of a spherical dust particle on a plasma-facing wall International conference

    11th Workshop on Fine Particle Plasmas 

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    Event date: 2010.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  632. MIDTERM SUMMAY OF JAPAN-US FUSION COOPERATION PROGRAM TITAN International conference

    19th Topical Meeting on the Technology of Fusion Energy(TOFE 19), Nov.7-11, 2010, Las Vegas, Neveda USA 

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    Event date: 2010.11

    Language:English   Presentation type:Oral presentation (invited, special)  

  633. Measurements of the dust property in experiment and post-campaign sampling on JT-60U Tokamak International conference

    9th International Conference on Tritium Science and Techology "TRITIUM 2010" Oct.24-29,2010 Nara, Japan 

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    Event date: 2010.10

    Language:English   Presentation type:Poster presentation  

  634. Tritium Retention by Tungsten with Nano-Morphology International conference

    9th International Conference on Tritium Science and Techology "TRITIUM 2010" Oct.24-29,2010 Nara, Japan 

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    Event date: 2010.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  635. Experimental and Simulation Studies of Dust Transport in JT-60U Tokamak International conference

    23rd IAEA Fusion Energy Conference 

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    Event date: 2010.10

    Language:English   Presentation type:Poster presentation  

  636. Generation and Characterization of High Heat-Flux Plasma-Flow for Divertor Simulation Studies using a Large Tandem Mirror Device International conference

    23rd IAEA Fusion Energy Conference 

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    Event date: 2010.10

    Language:English   Presentation type:Poster presentation  

  637. Investigation of the current decay time in high β p disruptive discharges of JT-60U International conference

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    Event date: 2010.10

    Language:English   Presentation type:Poster presentation  

  638. Fluctuation Characteristics of Detached L-mode SOL/Divertor Plasmas in JT-60U International conference

    1st International Youth Conference on Fusion Energy, FEC2010-0121, Daejeon,Republic of Korea 

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    Event date: 2010.10

    Language:English   Presentation type:Poster presentation  

  639. Application of helium plasma irradiated tungsten material as a new photocatalyst International conference

    ICRP-7 

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    Event date: 2010.10

    Language:English   Presentation type:Poster presentation  

  640. Fabrication of nanostructured black metals by use of self-growing helium bubbles International conference

    ICRP-7 

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    Event date: 2010.10

    Language:English   Presentation type:Poster presentation  

  641. 直線型装置における径方向への間欠的プラズマ放出現象の統計的解析

    田中宏彦、岡崎克哉、大野哲靖、辻義之、梶田信

    日本物理学会2010年秋季大会 

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    Event date: 2010.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  642. ダイヤモンドおよびダイヤモンドライクカーボンへの水素照射シミュレーション

    中村浩章、伊藤篤史、齋藤誠紀、高山有道、大野哲靖、梶田信

    日本物理学会2010年秋季大会 

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    Event date: 2010.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  643. 分子動力学による炭素堆積物形成のH/C依存性の研究

    伊藤篤史、高山有道、齋藤誠紀、大野哲靖、梶田信、中村浩章

    日本物理学会2010年秋季大会 

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    Event date: 2010.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  644. タングステン表面に形成されたナノ構造によるトリチウムの吸着・吸蔵と脱離

    波多野雄治、石杰、矢嶋美幸、佐伯翼、梶田信、大野哲靖

    日本原子力学会2010年秋の大会 

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    Event date: 2010.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  645. アモルファスカーボンの水素照射

    米村幸朗、齋藤誠紀、伊藤篤史、高山有道、大野哲靖、梶田信、中村浩章

    第4回シミュレーション科学シンポジウム 

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    Event date: 2010.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  646. 堆積過程におけるアモルファス炭素形成の分子動力学

    伊藤篤史、高山有道、齋藤誠紀、大野哲靖、梶田信、中村浩章

    第4回シミュレーション科学シンポジウム 

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    Event date: 2010.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  647. 黒色化タングステンからの赤外輻射計測

    横地貴紀、梶田信、内山徹也、田中宏彦、大野哲靖

    平成22年電気学会基礎・材料・共通部門大会 

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    Event date: 2010.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  648. 大気圧マイクロ波ジェット放電点火・遮断におけるプラズマの成長・消滅特性

    高村秀一、Md.A.Razzak、櫛田玄一郎、天野慎太、有田潤平、大野哲靖、神藤正士

    平成22年電気学会基礎・材料・共通部門大会 

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    Event date: 2010.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  649. 高熱流プラズマ照射ーイオンビーム解析複合装置の開発と水素同位体リテンション量のその場計測

    山際正人、梶田信、高木誠、大野哲靖、松波紀明、時谷政行、増崎貴、芦川直子、相良明男、西村清彦

    平成22年電気学会基礎・材料・共通部門大会 

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    Event date: 2010.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  650. 接触・非接触Heプラズマの動的応答の分光学的診断

    内山徹也、梶田信、大野哲靖、高木誠

    平成22年度電気関係学会東海支部連合大会 

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    Event date: 2010.8

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  651. 三成分分解法と時空間相関を用いた非接触プラズマ中の非拡散的輸送現象の解析

    岡崎克哉、田中宏彦、大野哲靖、辻義之、梶田信

    平成22年度電気関係学会東海支部連合大会 

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    Event date: 2010.8

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  652. 非接触重水素プラズマ中での炭素材損耗評価

    寺岡正広、大野哲靖、梶田信、西脇敏弘、中村浩章、伊藤篤史

    平成22年度電気関係学会東海支部連合大会 

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    Event date: 2010.8

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  653. 結晶方位の違いがタングステンのヘリウムバブル・ナノ構造形成に与える影響

    平畑佑樹、大野哲靖、佐伯翼、山際正人、梶田信、吉田直亮、吉原麗子、時谷政行

    平成22年度電気関係学会東海支部連合大会 

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    Event date: 2010.8

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  654. Deuterium Uptake in Iron Oxide (Fe2O3) Under D2+-Plasma Exposure International conference

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    Event date: 2010.6

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  655. NAGDIS-T における分光学的原子密度評価

    西脇 敏弘 ,梶田 信 ,高木 誠 ,大野 哲靖

    第8回核融合エネルギー連合講演会 

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    Event date: 2010.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  656. 高効率サーマルリチウムビーム源の開発とNAGDIS-Iプラズマの電子密度分布計測への適用

    眞鍋 泰平 ,柴田 欣秀 ,大野 哲靖 ,高木 誠 ,梶田 信

    第8回核融合エネルギー連合講演会 

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    Event date: 2010.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  657. ITER 周辺トムソン散乱計測装置のための高出力レーザーの開発

    波多江 仰紀,谷塚 英一,林 利光,梶田 信,吉田 英次,藤田 尚徳,中塚 正大,信夫 克也,矢作 鎌一,竹松 浩之,小野 武博,草間 義紀

    第8回核融合エネルギー連合講演会 

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    Event date: 2010.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  658. JT‐60U 非接触ダイバータフ&#12442;ラズマ状態における SOL/ダイ バータフ&#12442;ラズマ揺動解析

    田中 宏彦,大野 哲靖,朝倉 伸幸,辻 義之,梶田 信

    第8回核融合エネルギー連合講演会 

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    Event date: 2010.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  659. JT‐60U 高βpプラズマにおけるディスラフ&#12442;ション時の電流減衰 時間決定モデルの評価

    柴田 欣秀 ,渡邊 清政 ,大野 哲靖 ,岡本 征晃 ,諫山 明彦,栗原 研一,大山 直幸,仲野 友英,河野 康則,松永 剛,榊原 悟,杉原 正芳

    第8回核融合エネルギー連合講演会 

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    Event date: 2010.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  660. ヘリウムフ&#12442;ラズマ照射による金属ミラー材料の表面形状経時変化

    佐伯 翼,大野 哲靖,梶田 信,時谷 政行,高木 誠

    第8回核融合エネルギー連合講演会 

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    Event date: 2010.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  661. 単結晶タングステンへのヘリウム照射によるバブル・ナノ構造形成

    大野 哲靖,平畑 佑樹,佐伯 翼,山際 正人,梶田 信,吉田 直亮,時谷 政行

    第8回核融合エネルギー連合講演会 

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    Event date: 2010.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  662. ナノ構造 W のトリチウム保持特性

    矢嶋 美幸,波多野 雄治,佐伯 翼,梶田 信,大野 哲靖

    第8回核融合エネルギー連合講演会 

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    Event date: 2010.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  663. 昇温脱離法を用いた金属共堆積層中の水素・ヘリウム吸蔵量の評価

    小林智幸,大野哲靖,梶田信,時谷政行,増崎貴,上田 良夫

    第8回核融合エネルギー連合講演会 

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    Event date: 2010.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  664. Enhancement of ignition of arcing due to helium bubbles International conference

    S. Kajita, S. Takamura, N. Ohno

    International Workshop on the Role of Arcing and Hot Spots in Magnetic Fusion Devices 

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    Event date: 2010.6

    Language:English   Presentation type:Poster presentation  

    Country:Ireland  

  665. Simulation of Dynamics of Carbon Dust Particles in JT-60U Tokamak International conference

    19th Internationa. Conference on Plasma Surface Interactions in controlled fusion devices (PSI 2010) 

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    Event date: 2010.5

    Language:English   Presentation type:Poster presentation  

  666. Exposure of Tungsten Nano-Structure to TEXTOR Edge Plasma International conference

    19th Internationa. Conference on Plasma Surface Interactions in controlled fusion devices (PSI 2010) 

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    Event date: 2010.5

    Language:English   Presentation type:Oral presentation (general)  

  667. Tungsten Blow-Off in Response to the Ignition of Arcing: Revival of Arcing Issue in Future Fusion Devices International conference

    19th Internationa. Conference on Plasma Surface Interactions in controlled fusion devices (PSI 2010) 

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    Event date: 2010.5

    Language:English   Presentation type:Oral presentation (general)  

  668. Properties of re-deposited layer formed by Be seeded D-He mixture plasma tungsten interactions International conference

    19th Internationa. Conference on Plasma Surface Interactions in controlled fusion devices (PSI 2010) 

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    Event date: 2010.5

    Language:English   Presentation type:Poster presentation  

  669. Divertor Simulation Experiment and Its Future Research Olan Making Use of a Large Tandem Mirror Device International conference

    19th Internationa. Conference on Plasma Surface Interactions in controlled fusion devices (PSI 2010) 

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    Event date: 2010.5

    Language:English   Presentation type:Poster presentation  

  670. Influence of Crystallographic Orientation on Helium Bubble and Fuzz Structure Formation in Tungsten International conference

    19th Internationa. Conference on Plasma Surface Interactions in controlled fusion devices (PSI 2010) 

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    Event date: 2010.5

    Language:English   Presentation type:Oral presentation (general)  

  671. Particle Transport Measurements in the LHD Stochastic Magnetic Boundary Plasma using Mach Probes and Ion Sensitive Probe International conference

    19th Internationa. Conference on Plasma Surface Interactions in controlled fusion devices (PSI 2010) 

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    Event date: 2010.5

    Language:English   Presentation type:Poster presentation  

  672. Molecular Dynamics Simulation of Chemical Sputtering and Chemical Vapor Deposition on Carbon Materials International conference

    2nd International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials 

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    Event date: 2010.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  673. Formation of metallic nanostructure array by helium plasma irradiation International conference

    2nd International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials 

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    Event date: 2010.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  674. Molecular Dynamics Simulation of Hydrogen Injection onto Diamond and Diamond Like Carbon Surfaces International conference

    2nd International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials 

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    Event date: 2010.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  675. Study of plasma current in tokamak and helical devices International conference

    19th International Toki Conference (ITC19) 

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    Event date: 2009.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  676. Dependence of saturation temperature on diamond surfaces adsorbing hydrogen International conference

    19th International Toki Conference (ITC19) 

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    Event date: 2009.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  677. プラズマー壁相互作用のための大気圧マイクロ波プラズマジェットの開発

    辻川尚之、Md.Abdur Razzak、高村秀一、櫛田玄一郎、神藤正士、大野哲靖、宮本隆徳、有田潤平

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  678. 大気圧マイクロ波プラズマトーチにおける移動縞様現象の観測

    江角直道、轟香乃、大野哲靖

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  679. 直線型装置における磁場を横断するプラズマ構造の抽出

    田中宏彦、大野哲靖、辻義之、梶田信

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  680. 金属ミラー材料へのヘリウムプラズマ照射による光学反射率劣化

    佐伯翼、梶田信、大野哲靖、高木誠、時谷政行

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  681. 低温ヘリウムプラズマ照射による表面突起の発生・成長過程

    吉田直亮、吉原麗子、岩切宏友、梶田信、大野哲靖

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  682. 昇温脱離法を用いたダイバータ模擬装置中の金属・炭素ダストの水素・ヘリウム蓄積に関する研究

    小林智幸、大野哲靖、梶田信、時谷政行、増崎貴、上田良夫

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  683. ヘリウム照射タングステン上での単極アーキングの発生とそのフラクタル性

    梶田信、大野哲靖、高村秀一、辻義之

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  684. JT-60UにおけるYAGレーザー散乱によるプラズマ中のダスト分布と発生頻度の評価

    朝倉伸幸、波多江仰紀、川島寿人、仲野友英、田中康則、上杉喜彦、大野哲靖

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  685. JT-60Uディスラプションにおける速い電流消滅に対するプラズマインダクタンスの影響と電流減衰モデルの検討

    柴田欣秀、渡邊清政、岡本征晃、諫山明彦、栗原研一、大山直幸、仲野友英、河野康則、松永剛、榊原悟、杉原正芳

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  686. 高熱流プラズマ照射ーイオンビーム解析複合装置の開発と水素同位体リテンション量のその場計測

    山際正人、横地貴紀、梶田信、高木誠、大野哲靖、松波紀明、時谷政行、増崎貴、芦川直子、相良明男、西村清彦

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  687. 高効率サーマルリチウムビーム源の開発と二次元プラズマ電子密度計測への応用

    眞鍋泰平、柴田欣秀、大野哲靖、高木誠、梶田信

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  688. 重水素非接触プラズマ中の分光学的原子密度評価

    西脇敏弘、梶田信、高木誠、大野哲靖

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  689. 高熱流ダイバータプラズマ環境下における熱電子発電

    及川大、大野哲靖、梶田信、浅野和仁、時谷政行、増崎貴

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  690. 2次元PICシミュレーションによる電子シース構造解析

    浅野和仁、梶田信、及川大、大野哲靖

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  691. Be混入D-He混合プラズマ照射によるタングステン材の損傷と対向面上に形成される再堆積層の特性

    徳永和俊、藤原正、荒木邦明、宮本好雄、M.J.Baldwin、R.P.Doerner、西島大輔、永田晋二、土屋文、栗下裕明、大野哲靖、上田良夫

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  692. 核反応分析法による金属材料中の重水素吸蔵量の経時変化に関する研究

    横地貴紀、山際正人、大野哲靖、梶田信、松波紀明、増崎貴、時谷政行、芦川直子

    第26回プラズマ核融合学会年会 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  693. Chemical Vapor Deposition on Diamond Surfaces by Molecular Dynamics International conference

    The 7th General Scientific Assembly of the Asia Plasma and Fusion Association (APFA2009) and the Asia-Pacific Plasma Theory Conference (APPTC2009) 

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    Event date: 2009.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  694. Molecular Dynamics Simulation of Hydrogen Injection on Diamond Surfaces International conference

    21st International Conference on Numerical Simulation of Plasmas 2009 

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    Event date: 2009.10

    Language:English   Presentation type:Poster presentation  

  695. JT-60Uディスラプション放電時のプラズマインダクタンスの定量評価と電流減衰に対する影響

    柴田欣秀、渡邊清政、大野哲靖、岡本征晃、諫山明彦、栗原研一、仲野友英、大山直幸、河野康則、松永剛、榊原悟、杉原正芳

    日本物理学会2009年秋季大会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  696. 直線型ダイバータ模擬試験装置NAGDIS-IIにおける非拡散的プラズマ輸送の動的挙動評価

    田中宏彦、大野哲靖、辻義之、梶田信

    日本物理学会2009年秋季大会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  697. 大気圧マイクロ波放電プラズマ・ジェットの気密容器への導入

    辻川尚之、Md.Abdur Razzak、高村秀一、櫛田玄一郎、神藤正士、大野哲靖

    電気系関係学会東海支部連合大会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  698. 接触・非接触重水素プラズマ中での炭素損耗過程に関する研究

    西脇敏弘、梶田信、高木誠、大野哲靖

    電気系関係学会東海支部連合大会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  699. 高効率サーマルリチウムビーム源の開発

    眞鍋泰平、柴田欣秀、大野哲靖、高木誠、梶田信

    電気系関係学会東海支部連合大会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  700. 直線型ダイバータ模擬試験装置NAGDIS-IIにおける非拡散的プラズマ輸送の高速カメラ計測と動画解析

    田中宏彦、大野哲靖、辻義之、梶田信

    電気系関係学会東海支部連合大会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  701. 高熱流ダイバータプラズマを用いた熱電子発電

    及川大、大野哲靖、梶田信、高木誠、時谷政行、増崎貴

    電気系関係学会東海支部連合大会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  702. 2D Statistical Analysis of Non-Diffusive Transport in Detached Plasma Conditions of the Linear Divertor Simulator International conference

    12th International Workshop on Plasma Edge Theory in Fusion Devices 

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    Event date: 2009.9

    Language:English   Presentation type:Oral presentation (invited, special)  

  703. Helium bubble formation on tungsten fabricated with different methods and Development of high heat plasma generator with ion beam analysis International conference

    ICFRM-14 

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    Event date: 2009.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  704. Degradation of optical reflectivity of in-vessel mirror materials by helium bobardment International conference

    ICFRM-14 

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    Event date: 2009.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  705. 核融合プラズマ対向材料としての高融点材料の現状と課題

    大野哲靖、梶田信、高村秀一

    プラズマ科学シンポジウム2009/第26回プラズマプロセシング研究会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  706. タングステンへのレーザーとヘリウムプラズマの照射効果

    梶田信、大野哲靖、坂口亙

    プラズマ科学シンポジウム2009/第26回プラズマプロセシング研究会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  707. JT-60Uディスラプション解析によるL/R電流減衰モデルの検証

    柴田欣秀、岡本征晃、渡辺清政、大野哲靖、河野康則、諌山明彦、仲野友英、大山直幸、栗原研一、後藤基志

    プラズマ科学シンポジウム2009/第26回プラズマプロセシング研究会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  708. 高熱流ダイバータプラズマ環境下における熱電子発電

    及川大、大野哲靖、梶田信、高木誠、時谷政行、増崎貴

    プラズマ科学シンポジウム2009/第26回プラズマプロセシング研究会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  709. 流体乱流研究手法を用いたLHDダイバータプラズマ揺動解析

    田中宏彦、大野哲靖、辻義之、梶田信、増崎貴、小林政弘、森崎友宏、土屋隼人、小森彰夫

    プラズマ科学シンポジウム2009/第26回プラズマプロセシング研究会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  710. 非接触再結合重水素プラズマ中での炭素損耗過程の研究

    矢田賢吾、田中宏彦、西脇敏弘、大野哲靖、梶田信、高木誠

    プラズマ科学シンポジウム2009/第26回プラズマプロセシング研究会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  711. 大気圧マイクロ波ジェット放電におけるプラズマ/ガス混合体の静電流体力学

    高村秀一、斉藤誠紀、櫛田玄一郎、神藤正士、大野哲靖

    プラズマ科学シンポジウム2009/第26回プラズマプロセシング研究会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  712. 直線型ダイバータ模擬装置における素過程の解明

    大野 哲靖

    日本物理学会2008年秋季大会  2008.9.22 

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    Event date: 2008.9

    Language:Japanese  

    DOI: 10.11316/jpsgaiyo.63.2.2.0_171_2

  713. 大型トカマク装置JT-60Uにおけるディスラプション時の電流減衰時間決定機構の解明

    柴田欣秀、岡本征晃、渡辺清政、大野哲靖、河野康則、諌山明彦、栗原研一、仲野友英、大山直幸

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  714. LHDにおけるダスト移動に関する研究

    芦川直子、相良明男、富田幸博、西村清彦、大野哲靖、増崎貴、LHD実験グループ

    第7回核融合エネルギー連合講演会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  715. LHDエルゴディック層におけるプラズマ流研究

    小林智幸、江角直道、澤田圭司、大野哲靖、高村秀一、小林政弘、増崎貴

    第7回核融合エネルギー連合講演会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  716. 大型ヘリカル装置LHDにおける電流減衰時間の電子温度依存性の評価

    柴田欣秀、岡本征晃、大野哲靖、渡辺清政、後藤基志

    第7回核融合エネルギー連合講演会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  717. 大気圧マイクロ波プラズマトーチの乱流構造と波動伝搬に関する研究

    江角直道、轟香乃、小林智幸、大野哲靖

    第7回核融合エネルギー連合講演会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  718. トロイダルダイバータプラズマ模擬装置NAGDIS-Tを用いた非接触再結合重水素プラズマ物性に関する研究

    矢田賢吾、松井紀暁、田中宏彦、大野哲靖、高木誠

    第7回核融合エネルギー連合講演会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  719. ヘリウムプラズマ照射下におけるタングステン反射率測定

    佐伯翼、坂口亙、大野哲靖、梶田信

    平成20年度電気関係学会東海支部連合大会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  720. 高速カメラ及び静電プローブによる接触・非接触プラズマ中の静電揺動に関する研究

    西脇敏弘、田中宏彦、矢田賢吾、梶田信、高木誠、大野哲靖

    平成20年度電気関係学会東海支部連合大会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  721. 大型ヘリカル装置LHDダイバータ板上再堆積層への高熱流プラズマ照射効果

    眞鍋泰平、坂口亙、大野哲靖、梶田信、時谷政行、増崎貴

    平成20年度電気関係学会東海支部連合大会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  722. ヘリウムプラズマ照射によるステンレス鋼SUS316の水素吸蔵量変化

    横地貴紀、山際正人、大野哲靖、松波紀明、増崎貴、時谷政行、芦川直子

    平成20年度電気関係学会東海支部連合大会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  723. ヘリウムバブル形成におけるタングステン製造法依存性に関する研究

    山際正人、坂口亙、梶田信、高木誠、大野哲靖

    平成20年度電気関係学会東海支部連合大会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  724. 高熱流ダイバータプラズマを用いた熱電子発電の検討

    及川大、大野哲靖、梶田信、高木誠

    平成20年度電気関係学会東海支部連合大会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  725. 直線型ダイバータ模擬装置における素過程の解明

    大野哲靖

    日本物理学会2008年秋季大会 

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    Event date: 2008

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  726. LHDエルゴディック層におけるプラズマ流反転現象の実験的観測

    江角直道、小林智幸、澤田圭司、大野哲靖、高村秀一、小林政弘、増崎貴

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  727. タングステンへのプラズマ・レーザー複合照射効果

    梶田信、大野哲靖、坂口亙

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  728. 重水素・ヘリウム混合プラズマ照射によるタングステン材の表面損傷に及ぼすベリリウムの影響

    徳永和俊、藤原正、荒木邦明、宮本好雄、吉田直亮、M.J.Baldwin、R.P.Doerner、西島大輔、栗下裕明、大野哲靖、上田良夫

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  729. JT-60Uにおける高速カメラとYAGレーザー散乱による炭素ダスト測定

    朝倉伸幸,波多江仰紀、川島寿人、仲野友英、田中康則、上杉喜彦、大野哲靖

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  730. Spectroscopy Study of High Z Material Ablation Phenomena under Helium Plasma Exposure International conference

    18th PSI Conference, Toledo, Spain 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  731. ヘリウムプラズマ照射下における高Z材のアブレーション現象の観測

    坂口亙、梶田信、大野哲靖、高木誠

    電気学会全国大会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  732. トロイダルダイバータ模擬装置を用いた非接触再結合重水素プラズマ物性に関する研究

    矢田賢吾, 松井紀暁、大野哲靖、高木誠

    電気学会全国大会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  733. 大型ヘリカル装置LHDを用いた電流減衰時間の電子温度依存性評価

    柴田欣秀,岡本征晃、大野哲靖、渡邊清政、後藤基志

    電気学会全国大会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  734. 流体乱流研究手法によるプラズマ乱流データ解析

    田中宏彦,大野哲靖

    第11回若手科学者によるプラズマ研究会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  735. ヘリウムバブル形成におけるタングステン製造法依存性に関する研究

    山際 正人,大野哲靖

    第11回若手科学者によるプラズマ研究会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  736. ラマン分光法による高温高密度プラズマ照射された黒鉛の表面分析

    吉田雅史、中里博史、田辺哲朗、大野哲靖、吉見光明、高村秀一

    日本原子力学会2008年春の年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  737. 大気圧マイクロ波ジェット放電プラズマの真空容器への導入

    高村秀一、辻川尚之,守田成伸、中嶋祐貴、神藤正士、大野哲靖

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  738. 非接触重水素プラズマ照射下における炭素材損耗評価

    矢田賢吾、田中宏彦、大野哲靖、梶田信、高木誠

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  739. 高熱流ダイバータプラズマを用いた熱電子発電の検討

    及川大、大野哲靖、梶田信、高木誠、田中宏彦

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  740. LHD接触・非接触ダイバータプラズマにおけるバースト的揺動解析

    田中宏彦、大野哲靖、辻義之、梶田信、増崎貴、小林政弘、森崎友宏、土屋隼人、小森彰夫

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  741. 大気圧マイクロ波プラズマトーチの乱流耕造と波動伝搬特性

    江角直道、山田宗太郎、今井涼介、轟香乃、小林智幸、大野哲靖

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  742. 大気圧マイクロ波放電プラズマ・ジェットにおける構造ダイナミクスの観測と解析

    高村秀一、櫛田玄一郎、神藤正士、大野哲靖、斉藤誠紀、辻川尚之,伊藤了太、渡邊崇昌、宮野雅史、谷口将洪

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  743. 非接触プラズマ中のPlasma Blob輸送現象

    大野哲靖、田中宏彦、梶田信、高木誠

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  744. ヘリウムプラズマ照射によるタングステンナノ構造の形成条件

    坂口亙、梶田信、大野哲靖、高木誠

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  745. ヘリウムバブル形成におけるタングステン製造法依存性とプラズマ照射環境下その場表面解析装置の開発

    山際正人、坂口亙、梶田信、高木誠、大野哲靖、松波紀明、栗下裕明、時谷政行、増崎貴

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  746. LHDにおける3次元ダスト移動に関する評価

    芦川直子、富田幸博、相良明男、河村学思、大野哲靖、増崎貴、LHD実験グループ

    第25回プラズマ・核融合学会年会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  747. Deuterium retention in tungsten oxide under low energy D2+ plasma exposure International conference

    18th PSI Conference, Toledo, Spain 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  748. Sub-ms laser pulse irradiation on tungsten target damaged by exposure to helium plasma International conference

    N. Ohno, S. Kajita, S. Takamura

    2007 Japan-US Workshop on Heat Removal and Plasma Materials Interactions for Fusion, Fusion High Power Density Components and System, and IAEA Workshop on Solid Surface Plasma Facing Components  2007.7 

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    Event date: 2007.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Nara   Country:Japan  

  749. Measurement of plasma properties of the atmospheric oxy-combustion flame by using double probe method International conference

    Y. Osaka, N. Kobayashi, N. Ohno, S. Takamura, Y. Tanaka, Y. Uesugi

    7th International Workshop on Electrical Probes in Magnetized Plasmas  2007.7.22 

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    Event date: 2007.7

    Language:English  

    Venue:Prague   Country:Czech Republic  

  750. Extended Self-Similarity and Log-Poission Statisitcs of Intermittent Turbulence in Turbulent Boundary Layers of Laboratory International conference

    V.P. Budaev, S.P. Savin, L.M. Zelenyi, N. Ohno, S. Masuzaki, A. Komori, T. Morisaki, S. Takamura

    34th EPS Plasma Physics Conference  2007.7.2 

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    Event date: 2007.7

    Language:English  

    Venue:Warsaw   Country:Poland  

  751. Dependence of the damping rate of the oscillations of the dust particles levitating in a sheath on plasma parameters International conference

    M. Pustylnik, N. Ohno, S. Takamura, R. Smirnov

    34th EPS Plasma Physics Conference  2007.7.2 

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    Event date: 2007.7

    Language:English  

    Venue:Warsaw   Country:Poland  

  752. Statistical properties of edge plasma turbulence in selected stellarator plasmas in the Large Helical Device International conference

    B. Hnat, N. Ohno, R. O. Dendy, S. Masuzaki, T. Morisaki, A. Komori, J M Dewhurst

    34th EPS Plasma Physics Conference  2007.7.2 

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    Event date: 2007.7

    Language:English  

    Venue:Warsaw   Country:Poland  

  753. Physics issues and simulation of the JT-60 SA divertor for large heat and particle handling International conference

    N. Asakura, H. Kawashima, K. Shimizu, S. Sakurai, T. Fujita et al.

    34th EPS Plasma Physics Conference  2007.7.2 

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    Event date: 2007.7

    Language:English  

    Venue:Warsaw   Country:Poland  

  754. Evaluation of Dependence of Current Decay Time on Electron Temperature Measured by He I Line Intensity Ratios in JT-60U Tokamak International conference

    M. Okamoto, T. Hiraishi, N. Ohno, S. Takamura, T. Nakano, T. Ozeki, Y. Kawano, M.Sugihara

    34th EPS Plasma Physics Conference  2007.7.2 

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    Event date: 2007.7

    Language:English  

    Venue:Warsaw   Country:Poland  

  755. Numerical modeling of dust behavior made of different materials in plasmas International conference

    Y. Tanaka, A.Yu. Pigarov, R. Smirnov, S.I. Krasheninnikov, N. Ohno, Y. Uesugi

    11th International Workshop on Plasma Edge Theory in Fusion Devices  2007.5.23 

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    Event date: 2007.5

    Language:English   Presentation type:Poster presentation  

    Venue:Takayama, Japan  

  756. Extended self-similarity in edge plasma turbulence of fusion devices International conference

    V.P. Budaev, N. Ohno, S.Takamura, S. Masuzaki

    11th International Workshop on Plasma Edge Theory in Fusion Devices  2007.5.23 

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    Event date: 2007.5

    Language:English  

    Venue:Takayama, Japan  

  757. Fluctuating helium emission in optically thick divertor plasmas International conference

    F.B. Rosmej, N. Ohno, S. Takamura, S. Kajita

    11th International Workshop on Plasma Edge Theory in Fusion Devices  2007.5.23 

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    Event date: 2007.5

    Language:English  

    Venue:Takayama, Japan  

  758. Bursty Fluctuation Characteristics in SOL/Divertor Plasmas of Large Helical Device International conference

    US-Japan Workshop on "Non-Diffusive Plasma Transport and Its Statistics", January 11, 2007, Nagoya University, Nagoya, Japan 

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    Event date: 2007.1

    Language:English  

    Country:Japan  

  759. Study on Dust Formation and Transport in Divertor Plasma Simulators International conference

    US-Japan Workshops on "Dynamics of Dust Particles in Fusion Devices", January 10, 2007, Nagoya University, Nagoya, Japan 

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    Event date: 2007.1

    Language:English  

    Country:Japan  

  760. Study of Dust Transport Study in the Troidal Divertor Plasma Simulator NAGDIS-T International conference

    8th Workshop on Fine Particle Plasmas 

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    Event date: 2007

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  761. Measurements of Plasma Rotation Using Spectroscopic Method in the HYBTOK-II Tokamak with DED

    Int. Symp. on EcoTopia Science 

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    Event date: 2007

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  762. Study of Detached Recombining Deuterium Plasmas in the NAGDIS-T

    Int. Symp. on EcoTopia Science 

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    Event date: 2007

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  763. Statistical Evaluation for Current Decay Time on Electron Temperature Measured by He I Line Intensity Ratios

    Int. Symp. on EcoTopia Science 

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    Event date: 2007

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  764. Two-dimensional Measurement of Plasma Dynamics in Small Tokamak International conference

    Int. Symp. on EcoTopia Science 

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    Event date: 2007

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  765. Impurity Release from Tungsten Surface by Laser Heat Pulse Irradiation

    Int. Symp. on EcoTopia Science 

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    Event date: 2007

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  766. Study of Dust Transport in Troidal Divertor Plasma Simulator NAGDIS-T

    Int. Symp. on EcoTopia Science 

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    Event date: 2007

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  767. Impact of Dynamic Ergodic Divertor on Plasma Rotation in the Small Tokamak HYBTOK-II International conference

    Joint Conference of 17th International Toki Conference on Physics of Flows and Turbulence in Plasmas and 16th International Stellarator/Heliotron Workshop 2007 

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    Event date: 2007

    Language:English   Presentation type:Poster presentation  

  768. LHD 周辺・ダイバータプラズマにおけるイオン飽和電流揺動

    増崎貴,大野哲靖,V.P. Budaev,榊原悟, 森崎友宏,小林政弘,大藪修義,小森彰夫

    第24回プラズマ・核融合学会年会 

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    Event date: 2007

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  769. 高密度重水素プラズマ‐炭素材相互作用によるダスト形成とダスト内部構造観察,

    大野哲靖,時谷政行,高村秀一,徳永和俊,吉田直亮

    第24回プラズマ・核融合学会年会 

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    Event date: 2007

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  770. 小型トカマクにおける DED のプラズマ回転への影響

    長谷部優,岡本征晃,梶田信,大野哲靖,高村秀一

    第24回プラズマ・核融合学会年会 

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    Event date: 2007

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  771. JT-60U トカマクにおけるディスラプション時のヘリウム発光線強度比を用いた電子温度と電流減衰時間の評価

    岡本征晃,柴田欣秀,大野哲靖,高村秀一,仲野友英,河野康則,小関隆久,杉原正芳

    第24回プラズマ・核融合学会年会 

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    Event date: 2007

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  772. JT‐60U における高速可視カメラによるダスト運動測定

    朝倉伸幸,川島寿人,大野哲靖,仲野友英,上杉喜彦

    第24回プラズマ・核融合学会年会 

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    Event date: 2007

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  773. 高密度重水素直流放電を用いた非接触再結合プラズマに関する研究

    松井紀暁,山田隆,矢田賢吾,大野哲靖,高木誠,高村秀一

    第24回プラズマ・核融合学会年会 

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    Event date: 2007

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  774. トロイダルダイバータプラズマ模擬試験装置を用いたカーボンダスト輸送実験

    山田隆,松井紀暁,矢田賢吾,大野哲靖,高木誠,高村秀一

    第24回プラズマ・核融合学会年会 

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    Event date: 2007

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  775. JT-60Uにおけるディスラプション時の電子温度と電流減衰時間の評価

    柴田欣秀,岡本征晃、大野哲靖、河野康則、仲野友英

    電気関係学会東海支部連合大会 

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    Event date: 2007

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  776. トロイダルダイバータ模擬プラズマを用いた非接触再結合重水素プラズマの研究

    矢田賢吾, 松井紀暁、山田隆、大野哲靖、高木誠

    電気関係学会東海支部連合大会 

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    Event date: 2007

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  777. タングステンにおけるプラズマとレーザーの相乗効果

    坂口亙、梶田信、大野哲靖

    電気関係学会東海支部連合大会 

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    Event date: 2007

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  778. NAGDIS-Tにおける非接触再結合重水素プラズマに関する研究

    松井 紀暁,矢田 賢吾,山田 隆,大野 哲靖,高木 誠

    電気学会 基礎・材料・共通部門大会 

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    Event date: 2007

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  779. トロイダルダイバータプラズマ模擬試験装置を用いたダスト輸送研究

    山田隆,松井紀暁,矢田賢吾,大野哲靖,高木誠,高村秀一

    電気学会 基礎・材料・共通部門大会 

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    Event date: 2007

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  780. 高エンタルピー水素プラズマとグラファイトとの相互作用によるカリフラワー状炭素微粒子の生成

    大野哲靖、時谷政行, 高村秀一, 徳永 和俊, 吉田直亮

    第18回日本MRS学術シンポジウム 

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    Event date: 2007

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  781. High temperature irradiation damage of carbon materials studies by Laser Raman spectroscopy International conference

    Thirteenth International Conference on Fusion Reactor Materials 

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    Event date: 2007

    Language:English   Presentation type:Poster presentation  

  782. Mechanism of Surface Modification and Internal Damage in W under the Irradiation of Low Energy Helium Ions at Elevated Temperatures International conference

    Thirteenth International Conference on Fusion Reactor Materials 

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    Event date: 2007

    Language:English   Presentation type:Poster presentation  

  783. Sub-ms laser pulse irradiation on tungsten target damaged by exposure to helium plasma International conference

    2007 Japan-US Workshop on Heat Removal and Plasma Materials Interactions for Fusion, Fusion High Power Density Components and System, and IAEA Workshop on Solid Surface Plasma Facing Components, Nara, Japan, 25-27, July, 2007 (口頭発表) 

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    Event date: 2007

    Language:English  

    Country:Japan  

  784. Scaling Laws of Intermittent Plasma Turbulence in Edge of Fusion Devices International conference

    Joint Conference of 17th International Toki Conference on Physics of Flows and Turbulence in Plasmas and 16th International Stellarator/Heliotron Workshop 2007 

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    Event date: 2007

    Language:English   Presentation type:Poster presentation  

  785. Investigation of the Fluctuation Properties of the Ion Saturation Current in the Edge and Divertor Plasmas in LHD International conference

    Joint Conference of 17th International Toki Conference on Physics of Flows and Turbulence in Plasmas and 16th International Stellarator/Heliotron Workshop 2007 

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    Event date: 2007

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  786. High Flux Helium and Hydrogen Plasma Exposure to Bulky Tungsten and Tungsten-coated Graphite International conference

    IAEA Technical Meeting on "Assessment of Atomic and Molecular Data Priorities", 4-5 December, 2006, IAEA Headquarters, Vienna, Austria 

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    Event date: 2006.12

    Language:English  

  787. NAGDIS-IIにおける高密度重水素プラズマの生成とカーボンダスト形成機構の解明

    吉見 光明, 宮地 幸大, 梶田 信, 大野 哲靖, 高村 秀一, 高木 誠

    プラズマ・核融合学会年会  2006.11.28 

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    Event date: 2006.11 - 2006.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:筑波大学  

  788. ヘリウムバブル・ホールが形成されたタングステンへのレーザー照射実験

    梶田 信, 西本 天太郎, 大野 哲靖, 高村 秀一

    プラズマ・核融合学会年会  2006.11.30 

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    Event date: 2006.11 - 2006.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:筑波大学  

  789. 回転摂動磁場印加時の分光法によるプラズマ回転計測

    長谷部 優, 細井 峻, 岡本 征晃, 梶田 信, 高村 秀一, 大野 哲靖, 高木 誠

    プラズマ・核融合学会年会  2006.11.29 

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    Event date: 2006.11 - 2006.12

    Language:Japanese   Presentation type:Poster presentation  

  790. 外部回転摂動磁場によるトルク誘起のための電子加熱とその効果

    細井 峻, 長谷部 優, 山田 隆, 岡本 征晃, 大野 哲靖, 高村 秀一, 高木 誠

    プラズマ・核融合学会年会  2006.11.29 

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    Event date: 2006.11 - 2006.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:筑波大学  

  791. He I線強度比を用いたトカマクプラズマのパラメータ評価

    平石 剛大, 梶田 信, 岡本 征晃, 大野 哲靖, 高村 秀一, 仲野 友英

    プラズマ・核融合学会年会  2006.11.29 

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    Event date: 2006.11 - 2006.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:筑波大学  

  792. トロイダルダイバータプラズマ模擬実験装置におけるダストの輸送研究

    山田 隆, Pustylnik M., 長瀬 正明, 大野 哲靖, 高村 秀一

    2006.11.28 

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    Event date: 2006.11 - 2006.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:筑波大学  

  793. ダイバータ模擬装置MAP-IIにおける負イオン分布の計測及びシミュレーション

    梶田 信, 門 信一郎, 栗原 公紀, 桑原 洋介, 大野 哲靖, 高村 秀一

    プラズマ・核融合学会年会  2006.11.28 

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    Event date: 2006.11 - 2006.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:筑波大学  

  794. トロイダル・ダイバータ模擬試験装置における定常高密度直流放電に関する研究

    松井 紀暁, 長瀬 正明, 高木 誠, 大野 哲靖, 高村 秀一

    プラズマ・核融合学会年会  2006.11.28 

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    Event date: 2006.11 - 2006.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:筑波大学  

  795. 直線型ダイバータ模擬装置における負イオンの輸送に関する研究

    梶田 信, 門 信一郎, 栗原 公紀, 桑原 洋介, 大野 哲靖, 高村 秀一

    日本物理学会2006年秋季大会  2006.9.25 

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    Event date: 2006.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:千葉大学  

    DOI: 10.11316/jpsgaiyo.61.2.2.0_163_1

  796. ダイバータ模擬装置NAGDIS-IIにおけるヘリウム線強度比を用いた電子温度・密度計測法の検証実験

    梶田 信, 大野 哲靖, 平石 剛大, 仲野 友英, 高村 秀一

    日本物理学会第61回年次大会  2006.3.27 

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    Event date: 2006.3

    Language:Japanese   Presentation type:Poster presentation  

    DOI: 10.11316/jpsgaiyo.61.1.2.0_203_3

  797. Statistical approach to bursty plasma fluctuations in toroidal and linear plasma devices International conference

    13th International Congress on Plasma Physics, Kiev, May 22-26, 2006 

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    Event date: 2006

    Language:English  

  798. Helium Bubble and Hydrogen Blisters Formed on Tungsten due to Low Energy and High Fluence Plasma Irradiation and Its Impact to Next Step Fusion Devices International conference

    17th PSI Conference, Heifei, China, May 22-26, 2006 

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    Event date: 2006

    Language:English  

  799. ヘリウム線強度比を用いた電子温度密度計測法と静電プローブ法との比較

    梶田 信, 大野 哲靖, 岡本 征晃, 仲野 友英, 高村 秀一

    第22回プラズマ核融合学会年会  2005.11.30 

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    Event date: 2005.11 - 2005.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:タワーホール船掘(東京都江戸川区)  

  800. 高周波ジュール加熱によるプラズマ生成のモデリング

    長瀬 正明, 枡田 博光, 大野 哲靖, 高村 秀一

    第22回プラズマ核融合学会年会  2005.12.1 

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    Event date: 2005.11 - 2005.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:タワーホール船掘(東京都江戸川区)  

  801. Effects of Tungsten Electrode on the Initiation of High-Pressure Induction Plasmas

    Razzak M. Abdur, Takamura Shuichi, Ohno Noriyasu

    2005.12.1 

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    Event date: 2005.11 - 2005.12

    Language:English   Presentation type:Poster presentation  

  802. 高熱流重水素プラズマと黒鉛との相互作用によるダスト生成とその特性評価

    宮地 幸大, 大野 哲靖, 高村 秀一

    第22回プラズマ核融合学会年会  2005.12.1 

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    Event date: 2005.11 - 2005.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:タワーホール船掘(東京都江戸川区)  

  803. 小型トカマクHYBTOK-IIにおけるディスラプション時のプラズマ内部構造ダイナミックスの観測

    岡本 征晃, 菊池 祐介, 大野 哲靖, 高村 秀一, 上杉 喜彦, 小関 隆久, 河野 康則, 杉原 正芳

    第22回プラズマ核融合学会年会  2005.12.2 

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    Event date: 2005.11 - 2005.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:タワーホール船掘(東京都江戸川区)  

  804. RFジュール放電による高熱流トロイダルダイバータプラズマの生成

    枡田 博光, 長瀬 正明, 大野 哲靖, 高村 秀一, 高木 誠

    第22回プラズマ核融合学会年会  2005.11.29 

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    Event date: 2005.11 - 2005.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:タワーホール船掘(東京都江戸川区)  

  805. ヘリウムバブル・ホールが形成されたタングステン表面へのレーザー照射によるパルス熱負荷模擬実験

    西島 大, 梶田 信, 大野 哲靖, 高村 秀一

    第22回プラズマ核融合学会年会  2005.11.29 

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    Event date: 2005.11 - 2005.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:タワーホール船掘(東京都江戸川区)  

  806. Enhanching the Initial Electrostatic Discharge for Eficient Generation of Radio Frequency Inductively Coupled Plasmas at Atmospheric Pressure International conference

    M.Abudur Razzak, S.Takamura,, N.Ohno

    The 5th conference of Asia Plasma & Fusion Association  2005.8 

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    Event date: 2005.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Jeju, Korea   Country:Korea, Republic of  

  807. Generation of rf inductive coupling plasma in methane-oxygen pre-mixture flame International conference

    N.Ohno, Y.Osaka, M.A.Razzak, N.Kobayashi, Y.Uesugi, S.Takamura

    The 5th conference of Asia Plasma & Fusion Association  2005.8 

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    Event date: 2005.8

    Language:English  

    Venue:Jeju, Korea   Country:Korea, Republic of  

  808. Comparison of He I line intensity ratio method and electrostatic probe for electron density and temperature measurements in NAGDIS-II International conference

    S.Kajita, N.Ohno, M.Okamoto, T.Nakano, S.Takamura

    The 5th conference of Asia Plasma & Fusion Association  2005.8 

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    Event date: 2005.8

    Language:English   Presentation type:Poster presentation  

    Venue:Jeju, Korea   Country:Korea, Republic of  

  809. High-Performance deuterium Plasma Discharge in Linear Divertor Plasma Simulator NAGDIS-II with Double Anode Configuration International conference

    D.Nishijima, H.Yagyu, M.Takagi, N.Ohno, S.Takamura

    The 5th conference of Asia Plasma & Fusion Association  2005.8 

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    Event date: 2005.8

    Language:English   Presentation type:Poster presentation  

    Venue:Jeju, Korea   Country:Korea, Republic of  

  810. Control of energetic electron component in a double plasma device International conference

    M.Y.Pustylnik, N.Ohno, S.Takamura

    XXXVIIth ICPIG(International COnference on Phenomena in Ionized Gases)  2005.7 

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    Event date: 2005.7

    Language:English  

    Venue:Eindhoven, the Netherlands   Country:Netherlands  

  811. Optimum Generation of High Heat Flux Toroidal Plasma by RF Ohmic Discharge International conference

    H.Masuda, H.Kitahara, M.Nagase, N.Ohno, S.Takamura, M.Takagi

    32nd EPS Plasma Physics Conference  2005.6 

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    Event date: 2005.6 - 2005.7

    Language:English  

    Venue:Tarragona   Country:Spain  

  812. Formation of Very Deep Potential Well with Electrode Biasing in a Toroidal Device International conference

    T.Hiraishi, Y.Fukuzawa, N.Ohno, S.Takamura

    32nd EPS Plasma Physics Conference  2005.6 

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    Event date: 2005.6 - 2005.7

    Language:English  

    Venue:Tarragona, Spain   Country:Spain  

  813. Waiting-Time Multifractal Statistics of Edge Plasma Turbulence in the T-10 Tokamak and NAGDIS-II Linear Device International conference

    V.P.Budaev, S.Takamura, N.Ohno

    32nd EPS Plasma Physics Conference  2005.6 

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    Event date: 2005.6 - 2005.7

    Language:English  

    Venue:Tarragona, Spain   Country:Spain  

  814. Dynamic Behavior of the Disruptive Plasma in the Small Tokamak HYBTOK-II International conference

    M.Okamoto, S.Kokubo, Y.Kikkuchi, N.Ohno, S.Takamura, Y.Uesugi, T.Ozeki, Y.Kawano, M.Sugihara

    32nd EPS Plasma Physics Conference  2005.6 

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    Event date: 2005.6 - 2005.7

    Language:English  

    Venue:Tarragona, Spain   Country:Spain  

  815. ELM propagation and fluctuation in SOL and divertor on JT-60U Tokamak International conference

    N.Asakura, M.Takeuchi, G.Matsunaga, N.Oyama, T.Nakano, H.Miyoshi, N.Ohno, S.Takamura, Y.Uesugi

    32nd EPS Plasma Physics Conference  2005.6 

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    Event date: 2005.6 - 2005.7

    Language:English  

    Venue:Tarragona, Spain   Country:Spain  

  816. High-Density Deuterium Plasma Discharge in NAGDIS-II with Double Anode Configuration International conference

    D.Nishijima, I.Yagyu, D.Tanaka, M.Takagi, N.Ohno, S.Takamura

    32nd EPS Plasma Physics Conference  2005.6 

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    Event date: 2005.6 - 2005.7

    Language:English  

    Venue:Tarragona, Spain   Country:Spain  

  817. Intermittent Fluctuation Property of JT-60U Edge Plasmas International conference

    H.Miyoshi, N.Ohno, Y.Uesugi, N.Asakura, S.Takamura, Y.Miura

    32nd EPS Plasma Physics Conference  2005.6 

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    Event date: 2005.6 - 2005.7

    Language:English  

    Venue:Tarragona, Spain   Country:Spain  

  818. Formation and Transport of Carbon Dust in the Divertor International conference

    US-Japan Workshop on "Dust in Fusion Plasmas", Napa, California, USA 

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    Event date: 2005.4

    Language:English  

  819. Dynamic Behavior of Internal Magnetic Field during Disruption in the Small Tokamak HYBTOK-II International conference

    M.Okamoto, S.Kokubo, Y.Kikuchi, N.Ohno, S.Takamura, Y.Uesugi, T.Ozeki, Y.Kawano, M.Sugihara

    2nd International Conference of Stochasticity of Fusion Plasma  2005.3 

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    Event date: 2005.3

    Language:English  

    Venue:Juelich, Germany   Country:Germany  

  820. Intermittnet Transport of SOL/Diverotr Plasmas in JT-60U International conference

    6th International Tokamak Physics Activities Meeting on Divertor and Sccrape off Layer Physics, Universidad Rovira Virgili, Trragona, Spain, 4th-7th of July, 2005 

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    Event date: 2005

    Language:English  

  821. Initial Ignition Dynamics of Radio Frequency Induction Thermal Plasma in Atmospheric Pressure

    RAZZAK M. Abdur, TAKAMURA Shuichi, UESUGI Yoshihiko, OHNO Noriyasu

    2004.11.25 

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    Event date: 2004.11

    Language:English  

  822. LHDヘリカルダイバータにおける粒子束分布解析

    増崎 貴, 松本 裕, 小林 政弘, 三好 秀暁, 大野 哲靖, 森崎 友宏, 吉村 信次, 小森 彰夫, 大藪 修義

    第21回プラズマ核融合学会年会  2004.11.23 

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    Event date: 2004.11

    Language:Japanese  

    Venue:静岡県コンベンションアーツセンター「グランシップ」(静岡市)  

  823. Temperature Fluctuation and Turbulent Transport in the Edge Plasma of Fusion Devices

    SAHA S. K., KUMAR R., NISHIJIMA DAI, 大野 哲靖, 高村 秀一

    2004.11.23 

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    Event date: 2004.11

    Language:Japanese  

  824. 小型トカマクにおける径電場誘起と電位遷移現象の観測

    福澤 祐馬, 大野 哲靖, 高村 秀一

    第21回プラズマ核融合学会年会  2004.11.25 

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    Event date: 2004.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:静岡県コンベンションアーツセンター「グランシップ」(静岡市)  

  825. Rate Coefficient of Electron Impact Ionization of Cold Atoms for Electron Truncated Maxwellian Distribution International conference

    Y.Tomita, R.Smirnov, T.Takizuka, A.Hatayama, H.Matsuura, N.Ohno

    Joint ITC14 and ICAMDATA2004,  2004.10 

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    Event date: 2004.10

    Language:English  

    Venue:Cetatopia Toki  

  826. A New Class of Relevant Atomic Data for Transient and Opaque Plasmas International conference

    F.B.Rosmej, R.Stamm, S.Fritzsche, N.Yamamoto, T.Kato, M.Goto, H.Capes, M.Koubiti, V.S.Lisitsa, A.Meigs, N.Ohno, S.Takamura, D.Nishijima

    Joint ITC14 and ICAMDATA2004  2004.10 

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    Event date: 2004.10

    Language:English  

    Venue:Cetatopia Toki  

  827. Evaluation of Current Quench Decay Time in Tokamaks and Investigation of Its Behaviours International conference

    S.Kokubo, M.Okamoto, Y.Kikuchi, N.Ohno, S.Takamura, Y.Uesugi, Y.Kawano, M.Sugihara, T.Ozeki, M.Shimada

    31st EPS Conference on Plasma Phys.  2004.6 

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    Event date: 2004.6 - 2004.7

    Language:English  

    Venue:London   Country:United Kingdom  

  828. Intermittent Fluctuation Property of Edge Plasmas in JT-60U and LHD International conference

    H.Miyoshi, N.Ohno, S.Takamura, V.P.Budaev, Y.Uesugi, N.Asakura, Y.Miura, S.Masuzaki, A.Komori

    31st EPS Conference on Plasma Phys.   2004.6 

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    Event date: 2004.6 - 2004.7

    Language:English  

    Venue:London   Country:United Kingdom  

  829. Modeling of helium plasma tranport in linear divertor simulator NAGDIS-II with UEDGE International conference

    D.Nishijima, A.Yu.Pigarov, T.D.Rognlein, N.Ohno, E.M.Hollmann, S.Takamura, S.I.Krasheninnikov

    31st EPS Conference on Plasma Phys.   2004.6 

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    Event date: 2004.6 - 2004.7

    Language:English  

    Venue:London   Country:United Kingdom  

  830. Radiative Properties of High-n Neutral Helium Line Emission for Edge Plasma Conditions International conference

    F.B.Rosmej, R.Stamm, S.Fritzsche, H.Capes, M.Koubiti, Y.Marandet, V.S.Lisitsa, A.Meigs, N.Ohno, S.Takamura, D.Nishijima

    31st EPS Conference on Plasma Phys.  2004.6 

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    Event date: 2004.6 - 2004.7

    Language:English  

    Venue:London   Country:United Kingdom  

  831. Formation of Deep Potential Well and its Structural Transition in Small Tokamak Device International conference

    Y.Fukuzawa, H.Kojima, T.Okada, N.Ohno, S.Takamura

    31st EPS Conference on Plasma Phys.  2004.6 

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    Event date: 2004.6 - 2004.7

    Language:English  

    Venue:London   Country:United Kingdom  

  832. Development of Toroidal Divertor Plasma Simulator in Ngoya Universiry International conference

    H.Kitahara, S.Sora, N.Ohno, Y.Uesugi, S.Takamura, M.Takagi

    16th Inernational Conference on Plasma Surface Interactions in Controlled Fusion Devices  2004.5 

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    Event date: 2004.5

    Language:English  

    Venue:Portland MA, USA   Country:United States  

  833. Carbon dust formation from re-deposited layers in high-density Hydrogen/helium plasmas in the NAGDIS-II device International conference

    16th International Conference on Plasma Surface Interactions in Controlled Fusion Devices, Portland MA, USA, May 24-28, 2004 

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    Event date: 2004.5

    Language:English   Presentation type:Oral presentation (general)  

  834. Reconstruction of Velocity Distribution of Density Bursts by Wavelet Analysis in the Linear Divertor Simulator NAGDIS-II International conference

    9th Int. WS on Plasma Edge Theory in Fusion Devices, 3-5 September, 2003, San Diego 

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    Event date: 2003.9

    Language:English   Presentation type:Oral presentation (invited, special)  

  835. Experimental Observation and Statistical Analysis of Bursty Fluctuations in Tokamak, Helical and Linear Devices International conference

    3rd International Tokamak Physics Activities Meeting on Divertor and Scrape off Layer Physics, Ioffe Physico-Technical Institute, St. Petersburg, Russian Federation 

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    Event date: 2003.7

    Language:English   Presentation type:Oral presentation (general)  

  836. Resitivity in Detached Recombining Plasmas and its Influence on Probe Characterisitics International conference

    4th International Workshop on Electrical Probes in Magnetized Plasmas, Berlin, Germany 

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    Event date: 2000

    Language:English   Presentation type:Oral presentation (general)  

  837. Dynamic Behavior of Detached Recombining Plasmas for Plasma Heat Pulse in the Divertor Simulator NAGDIS-II International conference

    10th International Toki Conference on Plasma Physics and Controlled Nuclear Fusion, Toki, Japan 

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    Event date: 2000

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  838. Plasma Detachment with Molecular Processes in Divertor Plasmas International conference

    International Seminar on Atomic Processes in Plasmas, Toki, Japan 

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    Event date: 1999

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  839. Simulation and Experiment on Detached Plasmas in the Linear Divertor Simulator NAGDIS-II International conference

    Edge Plasma Theory and Simulation Workshop, Innsbruck, Austria 

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    Event date: 1998

    Language:English   Presentation type:Oral presentation (general)  

  840. Erosion/Redeposition of High-Z Materials in Linear Divertor Simulator International conference

    US/Japan Workshop(97FT5-06) on High Heat Flux Components and Plasma Surface Interactions for Next Fusion Devices, San Francisco, USA 

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    Event date: 1997

    Language:English   Presentation type:Oral presentation (general)  

  841. Gas Target Experiments in High Heat Flux Plasma of The TPD-I Device International conference

    11th International Conference on Plasma Surface Interactions in controlled Fusion Devices, Mito, Japan 

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    Event date: 1994

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  842. 小型トカマクHYBTOK-IIにおけるプラズマ消滅時の内部構造ダイナミクスの観測

    岡本 征晃, 菊池 祐介, 大野 哲靖, 高村 秀一, 上杉 喜彦, 小関 隆久, 河野 康則, 杉原 正芳

    プラズマ・核融合学会年会  2006.11.29 

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:筑波大学  

  843. 高周波ジュール放電を用いた定常・高密度トロイダル・ダイバータ模凝プラズマの生成

    長瀬 正明, 松井 紀暁, 山田 隆, 大野 哲靖, 高村 秀一, 高木 誠

    プラズマ核融合学会年会  2006.11.29 

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:筑波大学  

  844. 30pB010P Laser Irradiation Experiments to the Tungsten Surface Having Helium Holes and Bubbles

    KAJITAShin, NISHIMOTOTentaro, OHNONoriyasu, TAKAMURAShuichi

    2006.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  845. 30aB13P Comparison of He I line intensity ratio method and electrostatic probe for electron density and temperature measurements

    KAJITAShin, OHNONoriyasu, OKAMOTOMasaaki, NAKANOTomohide, TAKAMURAShuichi

    2005.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  846. 29aC20P Steady-State Generation of High Density Plasma by RF Ohmic Discharge in Toroidal Divertor Simulator NAGDIS-T

    NAGASEMasaaki, MATSUINoriaki, YAMADATakashi, OHNONoriyasu, TAKAMURAShuichi, TAKAGIMakoto

    2006.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  847. 29aC19P Dynamic Behavior of the Disruptive Plasma in the Small Tokamak HYBTOK-II

    OkamotoM., KikuchiY., OhnoN., TakamuraS., UesugiY., OzekiT., KawanoY., SugiharaM.

    2006.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  848. 29aC17P The Effect of Electron heating for Plasma Rotation Generation by Dynamic Ergodic Divertor.

    HOSOIShun, HASEBEYu, YAMADATakashi, OKAMOTOMasaaki, OHNONoriyasu, TAKAMURAShuichi, TAKAGIMakoto

    2006.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  849. 29aC16P Evaluation of Plasma Parameters Using Helium Line Intensity Ratios in Tokamak Plasmas

    HIRAISHITakehiro, KAJITAShin, OKAMOTOMasaaki, OHNONoriyasu, TAKAMURAShuichi, NAKANOTomohide

    2006.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  850. 29aB14P Pulsed-Heat Load on Tungsten Surface with Helium Bubble and Hole by Laser Irradiation

    NISHIJIMADai, KAJITAShin, OHNONoriyasu, TAKAMURAShuichi

    2005.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  851. 29aB13P Generation of High Heat Flux Toroidal Plasmas by RF Ohmic Discharge

    MASUDAHiromitsu, NAGASEMasaki, OHNONoriyasu, TAKAMURAShuichi, TAKAGIMakoto

    2005.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  852. 28aB25P Study of Dust Transport in Troidal Divertor Plasma Simulator

    YAMADATakashi, PustylnikM., NAGASEMasaaki, OHNONoriyasu, TAKAMURAShuichi

    2006.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  853. 28aB23P Measurement and Simulation of Negative Ion Density Profiles in Divertor Simulator MAP-II

    KAJITAShin, KADOShinichiro, KURIHARAKiminori, KUWAHARAYosuke, OHNONoriyasu, TAKAMURAShuichi

    2006.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  854. 28aB22P Steady-state DC Dischargefor High-Density Plasma production in toroidal divetor plasma simulator

    MATSUINoriaki, NAGASEMasaaki, TAKAGIMakoto, OHNONoriyasu, TAKAMURAShuichi

    2006.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  855. 28aB21P Production of High Density Deuterium Plasmas and Its Irradiation to Carbon Materials in NAGDIS-II

    YOSHIMIMitsuaki, MIYACHIYukihiro, KAJITAShin, OHNONoriyasu, TAKAMURAShuichi, TAKAGIMakoto

    2006.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  856. 25pA32P Formation of the Radial Electric Field and Transition of the Potential Structure in Small Tokamak Device

    FukuzawaY, OHNON, TAKAMURAS

    2004.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  857. 23aA18P Particle Flux Profiles on the Helical Diverter in LHD

    MasuzakiS., MatsumotoY., KobayashiM., MiyoshiH., OhnoN., MorisakiT., YoshimuraS., KomoriA., OhyabuN.

    2004.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  858. 02aA02P Dynamic Behavior of the Disruptive Plasma in the Small Tokamak HYBTOK-II

    OkamotoM., KikuchiY., OhnoN., TakamuraS., UesugiY., OzekiT., KawanoY., SugiharaM.

    2005.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  859. 01pC32P Dust formation due to interaction between high flux deutrium plasma and graphite and its characterization

    MIYACHIYukihiro, OHNONoriyasu, TAKAMURAShuichi

    2005.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

  860. 01pC23P Effects of Tungsten Electrode on the Initiation of High-Pressure Induction Plasmas : International coauthorship

    RazzakM. Abdur, TakamuraShuichi, OhnoNoriyasu

    2005.11.20 

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    Language:English   Presentation type:Oral presentation (general)  

    CiNii Research

  861. 01pC22P Modeling of Plasma Generation with RF Joule Heating

    NAGASEMasaaki, MASUDAHiromitsu, OHNONoriyasu, TAKAMURAShuichi

    2005.11.20 

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    Language:Japanese   Presentation type:Poster presentation  

    CiNii Research

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Research Project for Joint Research, Competitive Funding, etc. 40

  1. プラズマ計測および解析技術の伝授

    2022.4 - 2023.3

    企業からの受託研究 

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    Authorship:Principal investigator 

    Grant amount:\600000

  2. プラズマ計測および解析技術の伝授

    2019.4 - 2020.3

    企業からの受託研究 

  3. プラズマ計測および解析技術の伝授

    2018.4 - 2019.3

    企業からの受託研究 

  4. プラズマ計測および解析技術の伝授

    2017.4 - 2018.3

    企業からの受託研究 

  5. ヘリウムプラズマ照射によるステンレス系金属材料及び半導体材料の表面改質に関する予備検討

    2012.9 - 2013.7

    国内共同研究 

  6. 原型炉に対する先進的ダイバータの適用可能性調査

    2012.9 - 2013.1

    国内共同研究 

  7. 原型炉に対する先進的ダイバータの適用可能性調査

    2011.9 - 2012.1

    国内共同研究 

  8. 簡易閉ダイバータモジュールを用いた非接触プラズマ生成

    2011.4 - 2012.3

    国内共同研究 

  9. 希ガスプラズマ照射によるタングステンの表面損傷

    2011.4 - 2012.3

    国内共同研究 

  10. JT-60SAにおけるプラズマ・壁相互作用研究のための試料搬送装置設計検討

    2011.4 - 2012.3

    国内共同研究 

  11. 磁場閉じ込めプラズマ中の乱流、磁気島及び磁力線の研究(「境界プラズマと材料相互作用」)

    2011.4 - 2012.3

    国内共同研究 

  12. プラズマ対向壁からのダスト脱離特性に関する研究

    2011.4 - 2012.3

    国内共同研究 

  13. イオンビーム解析によるプラズマ照射環境下での水素同位体動的吸蔵量のその場計測

    2011.4 - 2012.3

    国内共同研究 

  14. LHD非接触プラズマ中でのプラズマブロッブ輸送現象

    2011.4 - 2012.3

    国内共同研究 

  15. 接触・非接触プラズマにおける非拡散的輸送解析

    2010.4 - 2013.3

    国内共同研究 

  16. LHD非接触プラズマ中でのプラズマブロッブ輸送現象

    2010.4 - 2011.3

    国内共同研究 

  17. JT-60SAにおけるプラズマ・壁相互作用研究のための試料搬送装置設計検討

    2010.4 - 2011.3

    国内共同研究 

  18. MHD崩壊現象のプラズマ閉じ込めに対する影響の研究

    2010.4 - 2011.3

    国内共同研究 

  19. ダイバータ模擬装置を用いたダスト・再堆積層中の重水素吸蔵特性の解明

    2010.4 - 2011.3

    国内共同研究 

  20. 高熱流ダイバータプラズマ環境を用いた直接発電の検討

    2009.4 - 2011.3

    国内共同研究 

  21. LHD周辺プラズマにおける非拡散的輸送現象の統計解析

    2007.4 - 2010.3

    国内共同研究 

  22. LHDプラズマ中でのダスト輸送研究

    2007.4 - 2010.3

    国内共同研究 

  23. ヘリカルプラズマにおける電流消滅時のプラズマ応答

    2007.4 - 2009.3

    国内共同研究 

  24. プラズマ中の非拡散的輸送研究

    2007.4 - 2008.3

    国際共同研究 

  25. 境界プラズマ乱流現象の統計性と再堆積材料表面過程に関する学際的研究

    2007

    学内共同研究 

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    分野間連携による学際的・国際的研究拠点形成プロジェクト

  26. 2次元サーマルリチウムビームを用いた周辺プラズマ揺動計測

    2006.4 - 2008.3

    国内共同研究 

  27. 大型核融合装置のプラズマ対向壁とPWI

    2005.4 - 2008.3

    国内共同研究 

  28. CHSのリミタ—及びダイバータ配位におけるスクレイプ・オフ層での粒子・熱の間欠的輸送

    2005.4 - 2007.3

    国内共同研究 

  29. 核融合装置中のダスト輸送に関する研究

    2005.4 - 2006.3

    国際共同研究 

  30. 専用高速3次元プラズマ・成膜シミュレーションシステムの開発

    2005 - 2007

    産業技術実用化開発費助成金(研究開発型ベンチャー技術開発助成事業)NEDO技術開発機 

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    Grant type:Competitive

  31. ダイバータプラズマ模擬装置中のバースト的プラズマ輸送現象の解析

    2003.4 - 2004.3

    国際共同研究 

  32. 接触・非接触プラズマ中の揺動と輸送

    2001.4 - 2002.3

    国際共同研究 

  33. 非接触水素プラズマ中での水素分子の挙動に関する研究

    2000.4 - 2001.3

    国際共同研究 

  34. 非接触再結合プラズマの動的過程

    1999.4 - 2000.3

    国際共同研究 

  35. ダイバータ模擬実験装置におけるプラズマーガス相互作用研究

    1997.4 - 1998.3

    国際共同研究 

  36. 非接触ダイバータプラズマとプラズマ再結合過程の物理

    1997

    石田財団研究助成 

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    Grant type:Competitive

  37. 高密度高リュードベリ原子群の物性

    1997

    住友財団研究助成 

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    Grant type:Competitive

  38. Plasma Detachmentにおけるプラズマー中性ガス相互作用

    1996.4 - 1997.3

    国際共同研究 

  39. ガスターゲットプラズマの物理・化学過程に関する研究

    1995.4 - 1996.3

    国際共同研究 

  40. 計算機シミュレーションによるダイバータ・プラズマとダイバータ板前面のシース構造の解析

    1993.4 - 1994.3

    国際共同研究 

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KAKENHI (Grants-in-Aid for Scientific Research) 57

  1. Ammonia synthesis using low and high electron temperature coexisting plasma with spiral magnetic field

    Grant number:20K20909  2020.7 - 2024.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

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    Authorship:Principal investigator 

    Grant amount:\6370000 ( Direct Cost: \4900000 、 Indirect Cost:\1470000 )

  2. Development of three-dimensional measurement method of velocity distribution function by using ghost imaging absorption spectroscopy

    Grant number:20K20914  2020.7 - 2023.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

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    Authorship:Coinvestigator(s) 

    Direct Cost: \100000 )

  3. 消えるプラズマの時空間構造を支配する物理・化学機構の解明と制御

    Grant number:20H00138  2020.4 - 2024.3

    科学研究費助成事業   基盤研究(A)

    大野 哲靖

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    Authorship:Principal investigator 

    Grant amount:\44460000 ( Direct Cost: \34200000 、 Indirect Cost:\10260000 )

    プラズマプロセッシングや核融合研究において重要な課題となっている気相中で消えるプラズマの物性を明らかにする。電子・イオン再結合(三体再結合,放射再結合)が主要な過程となる再結合プラズマ中の非熱平衡性,電位構造に関連した熱・粒子輸送過程を,直線型高密度プラズマ発生装置を用いた基礎実験とシミュレーションとの相補的な研究により明らかにする。また,振動励起水素分子により駆動される再結合(分子駆動再結合)プラズマ生成に関して,固体壁で生成される振動・回転励起水素分子の影響と同位体効果を明らかにする。さらに,再結合プラズマのパルス応答を高時間分解で調べ,時空間変化を決定する物理・化学過程を明らかにする。

  4. 金属堆積環境でのナノ構造加速成長と核融合炉への影響

    Grant number:19H01874  2019.4 - 2023.3

    梶田 信

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    Authorship:Coinvestigator(s) 

    Grant amount:\100000

    ヘリウムプラズマとタングステンを含む金属の相互作用(ヘリウム照射効果)により,来金属粒子とプラズマからの粒子が共堆積する環境下で,繊維状ナノ構造の桁違いの加速成長が起こることが明らかにされてきた。本研究では,これまでのヘリウム照射効果を根本的に変える可能性がある共堆積環境でのヘリウム照射効果に着目し,mmスケールのナノ構造成長の起こる条件と加速成長のメカニズムの解明と,核融合への影響や産業応用への分野への波及を視野に入れ加速成長を自由に制御することを目指し,直線型プラズマ装置を用いた実験を中心に研究を進める。

  5. Control of vacancy concentration and hydrogen isotope retention in neutron-irradiated tungsten alloys for fusion applications

    Grant number:18H03688  2018.4 - 2022.3

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    Authorship:Coinvestigator(s) 

    Grant amount:\200000

  6. Development and application of high density nitrogen radical source using helical plasma with long magnetic connection length

    Grant number:17K18768  2017.6 - 2019.3

    Grant-in-Aid for Challenging Research (Exploratory)

    Ohno Noriyasu

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    Authorship:Principal investigator 

    Grant amount:\6370000 ( Direct Cost: \4900000 、 Indirect Cost:\1470000 )

    A high density, high capacity nitrogen radical source has been developed by utilizing the helical nitrogen plasma with long magnetic field connection length generated by the magnetic field components in two directions and dissociative recombination process of nitrogen molecular ions. Two-dimensional measurement using an Langumuir probe revealed the dependence of the plasma parameters (electron density, electron temperature) of the helical nitrogen plasma on the magnetic line length and the neutral gas pressure. The generated nitrogen radical density was also evaluated by spectroscopy.
    In the future, high-density nitrogen radical sources will be used to form nitride films for coatings on cutting tools and machine parts such as automobiles, and to improve the quality of GaN expected as next-generation power semiconductors, and ammonia used for hydrogen fuel.

  7. 中性粒子・輻射輸送に伴う非接触ダイバータプラズマ中のエネルギー輸送機構の解明

    Grant number:16H02440  2016.4 - 2020.3

    科学研究費助成事業  基盤研究(A)

    大野 哲靖, 梶田 信, 澤田 圭司, 荒巻 光利, 田中 宏彦, 河村 学思

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    Authorship:Principal investigator 

    Grant amount:\44850000 ( Direct Cost: \34500000 、 Indirect Cost:\10350000 )

    #レーザートムソン散乱法に条件付き平均を適用して,直線型ダイバータプラズマ模擬試験装置で生成された非接触合プラズマ中のプラズマ不安定性の時間的変化を測定した。 プラズマ再結合において,電子エネルギー分布関数は非マクスウェル成分を持ち,低電子温度成分の割合はガス圧とともに増加することが示された。高速時間分解計測により非マクスウェル分布関数を引き起こす主な理由の1つは,電子温度の時間変化にあることが示唆された。さらに,電子密度と温度の空間(垂直および半径方向)分布の時間的変化が,さまざまな周波数範囲で明らかになった。
    #動的モード分解法(DMD)を,高速カメラによる計測された非接触プラズマの動的挙動の時系列データに適用した。 DMDにより,放射状プラズマ放出とE×B回転構造が抽出された。さらに,DMDモードの成長速度に対する中性ガス圧力の影響を調査した。 非接触プラズマの中性ガスの流量を増やすことにより,回転モードの成長速度は大きくなり,周波数は低下した。 これらの結果により,放出されたプラズマが周辺領域に長期間存在し,非接触プラズマにおける粒子・エネルギー輸送に大きな影響を与えていることが示された。
    #非接触ヘリウムプラズマシミュレーションでのエネルギー輸送解析の精度を高めるために,衝突放射モデルを使用して最新の速度係数を流体コードLINDAに導入し,従来の経験的データベースからのものと比較した。高密度条件において,改訂した生成項と経験的な生成項間のより大きなシミュレーション結果の違いが見られた。 一次元の非接触プラズマシミュレーションでは,ロールオーバー中のプラズマ密度が再結合に関連する損失項の違いに敏感であることを示した。さらに,三体再結合過程における加熱効果が,非接触プラズマ形成と下流のプラズマパラメータに強く影響することを明らかにした。
    令和元年度が最終年度であるため、記入しない。
    令和元年度が最終年度であるため、記入しない。

  8. ヘリウムプラズマ照射によるタングステンの物性変化と高密度プラズマとの相互作用

    2015.4 - 2019.3

    科学研究費補助金  基盤研究(B)

    梶田信

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  9. Helium irradiation effects on physical properties of tungsten and interaction with high density plasmas

    Grant number:15H04229  2015.4 - 2019.3

    Kajita Shin

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    Deposition of metal particles (ions and neutrals) was carried out simultaneously with helium irradiation on tungsten. As a result, it was revealed that huge fibrous nanostructures were formed. It was revealed that the formation proceeded at a rate 100 to 100,000 times faster than the formation rate of ordinary fibrous nanostructures. Focusing on its initial growth, it is found that it is quite different from the usual tungsten nanostructure (fuzz) growth, which increases exponentially with the irradiation time and thickness increases in proportion to the square root of time. It is revealed that the growth of large-scale nanostructures in the plane direction always has the same direction on the millimeter scale and is consistent with the direction of plasma flow.

  10. Pulsed plasma heat flow to tungsten material surface and its effect on melting and evaporation

    Grant number:26420855  2014.4 - 2017.3

    Takamura Shuichi

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    Melting, evaporation and tungsten atomic invasion into deuterium plasmas have been investigated by reaching 3000 degree C at tungsten surface with plasma heat pulse. Concerning the plasma heat flow to the surface, power transmission factor was studied in the experiment as well as numerical analysis, clarifying the importance of thermo-electron emission from the tungsten surfaces and a change in ion energy reflection coefficient due to its surface morphology. On the other hand, plasma momentum input to plasma-facing material surface was observed experimentally, and the analytical formulation was given. In addition, physical mechanism for fiber-form nanostructure formation on refractory metal surfaces are discussed in terms of shear modulus of metals containing helium atoms as a function of surface temperature and a mobility of helium atoms in metals.

  11. 長磁力線ダイバータ配位におけるプラズマデタッチメント特性の解明

    2013.4 - 2016.3

    科学研究費補助金  基盤研究(B)

    大野 哲靖

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  12. Investigation and simulation of the advanced divertor design for the large power handling in the fusion reactor

    Grant number:25420899  2013.4 - 2016.3

    Asakura Nobuyuki

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    Divertor design appropriate for a DEMO reactor is a crucial for handling the large power exhaust. Advanced divertors, which modify the magnetic configuration by applying additional divertor coils, has been investigated both from the physics and engineering viewpoints. Calculation code for the advanced divertor configurations was developed. The concept of superconductor divertor coils installed inside the toroidal field coil was proposed, and their locations and currents were determined. Divertor plasma simulation for the advanced divertor has been performed under the DEMO conditions; the divertor plasma temperature became low (1 eV), producing fully detached plasmas efficiently, and the peak heat load was reduced by 30-50% of the conventional divertor. Future issues are clarified; technology and engineering for the interlink-coil and their fabrication are crucial. Improvements of magnetic and geometrical configurations and accuracy of the simulation such as diffusion are necessary.

  13. 低温高密度非接触再結合プラズマを用いたWarm Dense Matter研究

    2013.4 - 2015.3

    科学研究費補助金  挑戦的萌芽研究

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  14. イオンビーム解析によるプラズマ照射環境下での水素同位体動的吸蔵量のその場計測

    2011.4 - 2013.3

    科学研究費補助金  挑戦的萌芽研究

    大野 哲靖

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  15. Study of the directionality on the redeposition layer in fusion devices

    Grant number:23656579  2011 - 2013

    MASUZAKI Suguru

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid)  Grant type:Competitive

    Material migration in the vacuum vessel of fusion devices is a crucial issue because it strongly affect the lifetime of plasma facing components and hydrogen isotope retention. In this study, I focused on the "directionality" to understand the mechanism of the redeosition layer formation. I designed the "directional material probe" which consists of the disk on which deposition layer is formed and the pin which makes shadow on the deposition layer if the deposits come to the probe with directionality. The probes were installed in LHD in NIFS and QUEST in Kyushu university. In LHD, it was revealed that the effects of plasma flow on the redeposition layer formation is weak. Carbon and iron are the main components of the in-vessel components of LHD. It was observed by the analysis of the probes that the deposition mechanism of them is same at some places and is different at the other places.

  16. プラズモイドー定常高熱流プラズマ複合照射装置を用いた先進プラズマー壁相互作用研究

    2010.4 - 2013.3

    科学研究費補助金  基盤研究(A)

    大野 哲靖

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  17. 核融合炉複合照射環境下で高い適応性を有するタングステンの研究

    2010.4 - 2013.3

    科学研究費補助金  基盤研究(A)

    上田良夫

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  18. Investigation and Control of Helium Defects Process on TungstenWall by using Newly Developed High Particle Flux Plasma Source

    Grant number:20360414  2008 - 2012

    TAKAMURA Shuichi

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    The new plasma device, AIT-PID, has been constructed, producing the high heat flux plasmas with high density of more than 1018 m-3 and the high electron energy (the high temperature ~ 30 eV; the low one ~ 5 eV). The fiber-form nanostructure, one of the important helium defect of tungsten (W), has been formed on the various grade of W’s. The surface properties like electron emission, radiation emissivity and sputtering yield have been investigating, showing serious effects of nanostructure on these characteristics. In addition the way of recovering from such defects has been demonstrated with the technique of plasma annealing, and the mitigation method using a thin carbon fil has been clarified.

  19. 核融合炉内複雑環境におけるトリチウム蓄積挙動の実験的研究

    2007.4 - 2012.3

    科学研究費補助金  特定領域研究

    上田良夫

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  20. トロイダルダイバータ模擬プラズマを用いた非接触プラズマ物理の解明

    2007.4 - 2010.3

    科学研究費補助金  基盤研究(B)

    大野 哲靖

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  21. トーラスSOLプラズマにおける非拡散的熱・非平衡放射ダイナミックスの解明

    2005.4 - 2008.3

    科学研究費補助金  基盤研究(A)

    高村秀一

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  22. 電磁場とプラズマの相互作用を通した高温燃焼火炎の新しい制御

    2005.4 - 2007.3

    科学研究費補助金  萌芽研究

    高村秀一

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  23. Studies on Non-diffusive Heat and particle Transport and Non-equilibrium radiation dynamics in Troidal SOL Plasmas

    Grant number:17206093  2005 - 2007

    TAKAMURA Shuichi

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    The control of plasma heat and particles in fusion reactor is one of the most important issues in realization of nuclear fusion energy. The basic research on the plasma-wall interactions (PWI), the physics of detached recombining plasmas and so on have been performed in linear plasma simulators, NAGDIS. However, hi toroidal magnetic confinement devices, the curvature of magnetic field lines, the gradient of magnetic field intensity, the grazing incidence of magnetic line of force on the plasma-facing surfaces, and so on could not be realized in linear machines so that a development of toroidal divertor simulator is essential. The non-diffusive plasma transport and nonequilibrium radiation dynamics are impoi taut in understanding of boundary layer plasma physics towards a success of ITER and the realization of demo reactor.
    Conceming the development of toroidal divertor plasma simulator, the RF Joule heating produces a large volume of deuterium plasma whose density is more than 10^<18>M^<-3> and the electron temperature is higher than 10 eV. On the other hand, the D.C discharge with a hot cathode generates multi-tum deuterium plasma loop whose plasma density is higher than 10^<19>m^<-3> with the electron temperature of 2 eV. The flout of the plasma loop shows the characteristics of recombining cold plasma. These results provide a basis of toroidal divertor simulator.
    The success of stable atmospheric helium discharge jet shows a possibility of a new plasma source for PWI with a very high-heat flux.
    As far as the statistical analysis of edge plasma fluctuations, we have tried to put the physical meaning of this analysis by using the probability distribution function PDF and its moments. That is, we have discussed the physical origin of the outward shift of velocity distribution function of blobs, identified the influence of the rotating helical magnetic perturbations on the plasma turbulence, and recognized a self-similarity of edge plasma fluctuations in terms of multi-fractal properties which shows a long time and space correlations contributing an anomalous plasma transport.
    We identified the radiation trapping of visible helium atomic lines which substantially influences on the determination of plasma parameter measurements, and developed a new set of He atomic lines which is robust to the radiation trapping by using collisional-radiative SOPHIA code developed by one of collaborators Professor Rosmej.

  24. 周辺プラズマ揺動構造の可視化によるバースト的輸送構造の解明

    2004.4 - 2006.3

    科学研究費補助金  基盤研究(B)

    朝倉伸幸

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  25. Understanding of burst transport of edge plasma using visualization of plasma turbulence structures

    Grant number:16360463  2004 - 2005

    ASAKURA Nobuyuki

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    Radial transport of the SOL plasma was studied in order to understand heat and particle loading to the first wall and the SOL formation mechanism. Fast propagation of the Edge Localized Mode (ELM) plasma and turbulence properties was determined at SOL using reciprocating Mach probes in JT-60U. A new fast TV camera system was developed in order to measure the 2 or 3-dimensional structure and its dynamics of the ELM plasma and turbulence properties.
    Statistical analysis of a probability distribution function (p.d.f.) showed, for the first time, that the positive bursty events appeared most frequently at r〜 5cm, suggesting the radial transport of the convective blobby plasma. Large and short (10-20 micro-s) peaks were found in ELM plasma flux (j_s), which was regularly enhanced after each ELM event (magnetic turbulence). Transport dynamics of the first large j_s peak was determined, i.e. it propagated to near the first wall with the fast velocity of 1.3-2.5km/s, which was faster than other tokamaks.
    In 2004, test of a fast TV camera (Fotoron, FASTCAM MAX-II) and design of the optical (focusing lenses and image guided) and trigger control systems were completed. In Feb. 2005, installation of the system was finished, and Da/Ha emission images (32x32cm) are measured in JT-60U experiments with sampling rate of 10kHz. Experiments to measure two or three dimensional structure and the dynamics of the ELM plasma and bursty events in edge and SOL plasmas will be done in April-July 2006.

  26. トロイダルダイバータ配位におけるバースト状非局所熱・粒子輸送に関する研究

    2002.4 - 2005.3

    科学研究費補助金  基盤研究(A)

    高村秀一

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  27. 動的エルゴディックダイバータを用いた先進トカマクに関する研究

    2002.4 - 2005.3

    科学研究費補助金  基盤研究(B)

    上杉喜彦

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  28. Studies on Nonlocal Bursty Transport of Plasma Heat and Particles in Toroidal Divertor Configuration

    Grant number:14208052  2002 - 2004

    TAKAMURA Shuichi

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    1. Construction of Toroidal Device NAGDIS-T for SOL and Divertor Simulation Studies
    Machine parameters are as follows: Major radius RO = 34 cm, width 2a =18 cm, Height 2b = 28 cm, Toroidal and vertical fields: Bt = 0.1 T, Bv = 10 G. The plasma density of ne~1018 m-3 and the electron temperature of Te~10 eV with the pulse length of 50 ms under the deuterium gas pressure of P~1 mTorr have been obtained by the injection of RF power of 20 kW for AC Joule heating. A simple numerical model for the plasma generation is employed and found to reproduce the gas pressure dependence of plasma density. A steady spiral toroidal plasma production using DC discharge of ne・1019 m-3 and Te~5 eV has been obtained for the prospect of ELM simulation by a pulsed operation.
    2. Research on bursty nonlocal transport of plasma heat and particles
    Statistical analysis of time-series data with the help of probability density function, wavelet transform associated by complex Morlet mother function, and fractal analysis becomes a very important tool for the present project owing to the contributions of Dr. Budaev.
    Radial velocity distribution function of intermittent bursty fluctuations observed in NAGDIS-II has been obtained. The velocity distribution with large amplitude at a specific range of of wavelet scale was also demonstrated, and the mean velocity is found as fast as 800 m/s.
    In. the properties of intermittent bursty fluctuations in JT-60U SOL, the skewness of Isat peaks around dsep = 60-80 mm where the direction of the mean parallel SOL flow changes upward to downward in both L-mode and between ELMs of ELMy H-mode. The radial decay length of Isat increases there. The decay length of Isat during ELM is about three times as large as one of Isat between ELMs. The ELMs seem like blobs
    The fluctuations in HYBTOK-II tokamak plasma with dynamic ergodic divertor configuration (DED) tend to propagate poloidally and predominantly in accordance with the DED rotation direction, something like chaos control.

  29. 電磁場閉じ込め静電加速核融合反応発生装置の開発

    2001.4 - 2004.3

    科学研究費補助金  基盤研究(B)

    高村秀一

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  30. 移動表面式プラズマ対向機器による粒子制御の原理検証実験

    2001.4 - 2004.3

    科学研究費補助金  基盤研究(C)

    廣岡慶彦

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  31. 水素・ヘリウム混合プラズマ照射によるタングステン材料表面特性変化の評価

    2001.4 - 2003.3

    科学研究費補助金  基盤研究(C)

    大野哲靖

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  32. 高リュードベリガス媒質中における音波伝搬

    2000.4 - 2002.3

    科学研究費補助金 

    高村秀一

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  33. 周辺プラズマの物理

    1999.4 - 2005.3

    科学研究費補助金  特定領域研究

    高村秀一

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  34. トカマクプラズマにおけるプラズマ回転の動的形成過程

    1999.4 - 2002.3

    科学研究費補助金  基盤研究(B)

    上杉喜彦

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  35. 分子活性化再結合による非接触水素プラズマの構造変化

    1999.4 - 2001.3

    科学研究費補助金  奨励研究

    大野 哲靖

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  36. 動的エルゴディックダイバータ基礎研究

    1997.4 - 2001.3

    科学研究費補助金  基盤研究(A)

    高村秀一

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  37. 非接触プラズマの動的過程の総合的理解

    1997.4 - 1999.3

    科学研究費補助金  奨励研究

    大野 哲靖

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  38. 高密度高リュードベリ原子媒質の生成とその相転移

    1997.4 - 1999.3

    科学研究費補助金  萌芽的研究

    高村秀一

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  39. 局所ダイバータバイアスによるヘリカルSOL電流の由樹とその電磁場構造への効果

    1996.4 - 1998.3

    科学研究費補助金  基盤研究(B)

    上杉喜彦

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  40. 固体表面での粒子反射に伴うDetached Plasmaの構造変化

    1996.4 - 1997.3

    科学研究費補助金  奨励研究

    大野 哲靖

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  41. Generation of Helical SOL Current by on-axisymmetric Divertor Biasing and its effects on SOL Plasma Transport

    Grant number:08458133  1996 - 1997

    UESUGI Yoshihiko

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    Heat flux reduction onto the tokamak divertor plate by non-axisymmetric divertor biasing is investigated. ExB convective cells are generated in the scrape off layr (SOL) and divertor plasmas by this non-axisymmetric divertor biasing and SOL and divertor plasma transport is strongly modified. The local divertor biasing experiments have been done in the JFT-2M toka-mak and spatial changes of the plasma potential in the SOL due to local divertor biasing is observed. The spatial structure of the plasma potential during biasing is calculated by 1-DSOL-divertor biasing model and compared with the experimentally observed one. The experimental profile of the plasma potential, which shows the generation of ExB convective cells in the SOL,agrees qualitatively with the theoretical estimation. The particle flux onto the divertor plate is strongly modified by this ExB convective cell formation.
    In addition to the ExB convective cell formation by DC divertor biasing, Radio Frequency (RF) induced sheath on the RF antenna and its effects on the antenna-plasma coupling are studied in the linear divertor plasma simulator. In the conventional loop antenna large DC negative sheath voltage is induced by RF voltage on the antenna and the antenna heat flux is significantly increased by energetic ion bombardments accelerated by this DC negative sheath. The plasma potential near the antenna is strongly modified by the near RF field and plasma coupling, and the formation of ExB convective cells near the antenna is expected. The study of the RF induced ExB convective cells and their effects on the plasma transport is now in progress.

  42. トカマク高性能化のための基礎研究トーラスの開発

    1995.4 - 1998.3

    科学研究費補助金  基盤研究(A)

    高村秀一

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  43. 高熱流プラズマ炎の物理化学過程に関する総合的研究

    1995.4 - 1997.3

    科学研究費補助金  基盤研究(A)

    高村秀一

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  44. 動力学的ガスターゲットダイバータにおける高熱流プラズマ炎の構造と安定性

    1995.4 - 1997.3

    科学研究費補助金  基盤研究(B)

    高村秀一

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  45. 高熱流ダイバータ・プラズマ模擬装置を用いたプラズマ・対向壁相互作用に関する研究

    1995.4 - 1997.3

    科学研究費補助金  国際学術研究

    高村秀一

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  46. 環状磁場閉じ込めプラズマ発生装置を用いた高効率プラズマエッチングプロセシング

    1994.4 - 1995.3

    科学研究費補助金  奨励研究

    大野哲靖

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  47. ダイバータ模擬試験装置を用いた新しいヘリウム灰排出法の研究

    1993.4 - 1995.3

    科学研究費補助金  一般研究(B)

    上杉喜彦

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  48. 微粒子を含むプラズマの生成とその静電的特性の解明

    1993.4 - 1994.3

    科学研究費補助金  奨励研究

    大野哲靖

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  49. ダイバータ模擬試験装置を用いた不純物及び水素リサイクリング制御研究の新展開

    1992.4 - 1994.3

    科学研究費補助金  総合研究(A)

    高村秀一

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  50. 熱電子放出ダイバータ板と高熱流プラズマ複合系における分岐現象

    1992.4 - 1993.3

    科学研究費補助金  一般研究(C)

    高村秀一

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  51. 固体壁へのプラズマ熱流流入に関する物理過程の解明 研究課題

    1992.4 - 1993.3

    科学研究費補助金  奨励研究

    大野哲靖

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  52. 波動加熱を用いた新しい定常高熱流プラズマ源の開発

    1991.4 - 1994.3

    科学研究費補助金  試験研究(B)

    高村秀一

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  53. 高速イオンの古典的軌道損失を用いた非接触電場制御

    1991.4 - 1993.3

    科学研究費補助金  一般研究(B)

    上杉喜彦

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  54. ボックスカー撮像法によるトカマクプラズマ中のカオス磁場構造の可視化

    1991.4 - 1992.3

    科学研究費補助金  奨励研究

    大野哲靖

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  55. 磁界によるイオン・ラジカルの生成・輸送・成膜制御

    1990.4 - 1991.3

    科学研究費補助金  重点領域研究

    藤山寛

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    Authorship:Coinvestigator(s) 

  56. 磁界による反応性プラズマの制御

    1989.4 - 1990.3

    科学研究費補助金  重点領域研究

    藤山寛

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    Authorship:Coinvestigator(s) 

  57. 磁界による反応性プラズマの制御

    1988.4 - 1989.3

    科学研究費補助金  重点領域研究

    藤山寛

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    Authorship:Coinvestigator(s) 

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Industrial property rights 3

  1. 中性子発生源

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    Applicant:高村秀一、大野哲靖 他

    Application no:特願2201-58224  Date applied:2001

    Announcement no:特願2201-58224 

    Patent/Registration no:特願2201-58224  Date registered:2001 

    Country of applicant:Domestic  

  2. 中性子発生源

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    Applicant:高村秀一、大野哲靖 他

    Application no:特願2201-58224  Date applied:2001

    Announcement no:特願2201-58224 

    Patent/Registration no:特願2201-58224  Date registered:2001 

    Country of applicant:Domestic  

  3. プラズマ処理装置およびプラズマ処理法

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    Applicant:高村秀一、上杉喜彦、大野哲靖 他

    Application no:特願平11-294554  Date applied:1999

    Announcement no:特願平11-294554 

    Patent/Registration no:特願平11-294554 

    Country of applicant:Domestic  

 

Teaching Experience (On-campus) 7

  1. Electronics Circuits with Exercises

    2020

  2. Electronics Circuits with Exercises

    2020

  3. Electronic Circuits

    2020

  4. Basic Plasma Physics and Engineering

    2020

  5. 電子回路工学及び演習

    2012

  6. Foundations of Electromagnetics I

    2011

  7. First Year Seminar B

    2011

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Social Contribution 18

  1. 第11回「おもしろ科学教室」

    Role(s):Lecturer, Planner

    2019.1

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    Audience: High school students

    Type:Seminar, workshop

  2. 第11回「おもしろ科学教室」

    Role(s):Lecturer, Planner

    2019.1

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    Audience: High school students

    Type:Seminar, workshop

  3. 第10回「おもしろ科学教室」

    Role(s):Lecturer, Planner

    2018.1

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    Audience: High school students

    Type:Seminar, workshop

  4. 第9回「おもしろ科学教室」

    Role(s):Lecturer, Planner

    2017.1

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    Audience: High school students

    Type:Seminar, workshop

  5. 出前授業(岐阜北高等学校)

    Role(s):Lecturer

    2017

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    Audience: High school students

    Type:Visiting lecture

  6. 第8回「おもしろ科学教室」

    Role(s):Lecturer, Planner

    2016.1

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    Audience: High school students

    Type:Seminar, workshop

  7. 第7回「おもしろ科学教室」

    Role(s):Lecturer, Planner

    2015.1

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    Audience: High school students

    Type:Seminar, workshop

  8. 第6回「おもしろ科学教室」

    Role(s):Lecturer, Planner

    2014.1

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    Audience: High school students

    Type:Seminar, workshop

  9. 第5回「おもしろ科学教室」

    Role(s):Lecturer, Planner

    2013.1

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    Audience: High school students

    Type:Seminar, workshop

  10. 第4回「おもしろ科学教室」

    Role(s):Lecturer, Planner

    2012.1

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    Audience: High school students

    Type:Seminar, workshop

  11. プラズマ実験実習

    2011.8

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    高熱流プラズマによる耐熱材料照射実験
    参加高校:愛知県立春日井高等学校

  12. 高校生見学会(愛知県立岡崎北高等学校)

    2011.8

  13. プラズマ実験実習

    2011.8

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    ガスクッションによるプラズマ制御実験
    参加高校:愛知県立岡崎北高等学校
    名城大学附属高等学校

  14. 第3回「おもしろ科学教室」

    2011.1

  15. 出前授業(愛知県立岡崎北高等学校@核融合科学研究所)

    2010.8

  16. 出前授業(愛知県立成章高等学校)

    2010.3

  17. 第2回「おもしろ科学教室」

    2010.1

  18. 第1回「おもしろ科学教室」

    2009.1

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