Faculty Profiles - OHNO, Noriyasu

Papers - OHNO, Noriyasu

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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

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

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

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

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

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

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

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

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

Language：English

© 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

Scopus

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

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

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

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

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

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

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

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

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

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

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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Papers - OHNO, Noriyasu