研究者詳細 - 大野　哲靖

論文 - 大野　哲靖

分割表示 657 件中 241 - 260 件目／全件表示 >>

Development of steady/transient dual plasma irradiation device using a plasma gun 査読有り

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

Journal of Nuclear Materials 438 巻頁： S707-S710 2013年7月

Edge and divertor plasma measurements with ion sensitive and Mach probes in LHD 査読有り

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

Journal of Nuclear Materials 438 巻頁： S1228-S1231 2013年7月

Tritium retention in nanostructured tungsten with large effective surface area 査読有り

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

Journal of Nuclear Materials 438 巻頁： S1142-S1145 2013年7月

Study of hydrogen isotopes behavior in carbon based materials with in situ ion beam analysis under plasma exposure 査読有り

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

Journal of Nuclear Materials 438 巻頁： S1036-S1039 2013年7月

Influence of crystal orientation on damages of tungsten exposed to helium plasma 査読有り

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

Journal of Nuclear Materials 438 巻頁： S879-S882 2013年7月

Thermal radiation characteristics and direc evidence of tungsten cooling on the way to nanostructure formation on its surface 査読有り

S.Takamura, T.Miyamoto, N.Ohno

Journal of Nuclear Materials 438 巻頁： S814-S817 2013年7月

Recent results of divertor simulation research using an end-cell of a large tandem mirror device 査読有り

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 438 巻頁： S738-S741 2013年7月

Kinetic effect of high energy ions on the temperature profile in the boundary plasma region 査読有り

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

Journal of Nuclear Materials 438 巻頁： S472-S474 2013年7月

Divertor heat and particle control experiments on the large helical device 査読有り

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

Journal of Nuclear Materials 438 巻頁： S133-S138 2013年7月

Properties of deposited layer formed by interaction with Be seeded D-He mixture plasma and tungsten 査読有り国際共著国際誌

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 442 巻 ( 1-3 SUPPL.1 ) 2013年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Nuclear Materials

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

Field Emission Property of Nanostuructured Tungsten Formed by Helium Plasma Irradiation 査読有り

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

Journal of Fusion Engineering and Design 88 巻頁： 2842-2847 2013年6月

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

S.Takamura, T.Miyamoto, N.Ohno

Transactions of Fusion Science and Technology 63 巻頁： 225-228 2013年5月

Investigation of Advanced Divertor Magnetic Configuration for Demo Tokamak Reactor 査読有り

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 63 巻 ( 1T ) 頁： 70-75 2013年5月

Impact of arcing on carbon and tungsten: from the observations in JT-60U, LHD and NAGDIS-II 査読有り

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

Nuclear Fusion 53 巻頁： 053013(9 pp) 2013年4月

Helium plasma implantation on metals: Nanostructure formation and visible-light photocatalytic response 査読有り

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

Journal of Applied Physics 113 巻頁： 134301(8 pp) 2013年4月

Assessment of multi-pulse laser-induced damage threshold of metallic mirrors for Thomson scattering system 査読有り

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

Optics Express 21 巻 ( 8 ) 頁： 9333-9342 2013年4月

Comparison of damages on tungsten surfac exposed to noble gas plasmas 査読有り

M.Yajima, M.Yamagiwa, S.Kajita, N.Ohno et al.

Plasma Science & Technol. 15 巻頁： 282-286 2013年3月

Two-dimensional visualization of excitation temperature and chemical species in divertor plasmas: Trace CD molecules by chemical sputtering of fusion plasma reactor wall 査読有り

Z.Cui, K.Kodama, M.Yamamoto, Q.Shen, M.Yoshimi, S.Kajita, N.Ohno, K.Kitagawa

Microchemical Journal 106 巻頁： 174-179 2013年1月

Influence of the Probe Electrode on Probe Measurements for Atmospheric Pressure Microwave Plasma Torch 査読有り国際誌

Ezumi N., Kodama N., Akahane K., Shiozawa S., Sawada K., Ohno N.

Contributions to Plasma Physics 53 巻 ( 1 ) 頁： 81 - 85 2013年1月

担当区分：最終著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Contributions to Plasma Physics

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

Scopus

First Principles Investigation on Trapping of Multiple Helium Atoms within a Tungsten Monovacancy 査読有り

A.Takayama, A.M.Ito, S.Saito, N.Ohno, H.Nakamura

Japanese Journal of Applied Physics 52 巻頁： 01AL03(4 pp) 2013年

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