T
Toshihiko Yamauchi
Researcher at Japan Atomic Energy Research Institute
Publications - 100
Citations - 1261
Toshihiko Yamauchi is an academic researcher from Japan Atomic Energy Research Institute. The author has contributed to research in topics: Tokamak & Plasma. The author has an hindex of 19, co-authored 100 publications receiving 1247 citations. Previous affiliations of Toshihiko Yamauchi include Japan Atomic Energy Agency.
Papers
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Journal ArticleDOI
Edge electric-field profiles of H-mode plasmas in the JFT-2M tokamak.
Katsumi Ida,S. Hidekuma,Y.M. Miura,Takaaki Fujita,Michiyasu Mori,Katsumichi Hoshino,Norio Suzuki,Toshihiko Yamauchi +7 more
TL;DR: The structure of the edge radial electric field inferred from the poloidal rotation velocity is compared with that of the particle and thermal transport barrier for {ital H}-mode plasmas in JFT-2M and its gradient is found to become more negative at the {ital L}-{ital H] transition.
Journal ArticleDOI
Avoidance of qa=3 disruption by electron cyclotron heating in the JFT-2M tokamak.
Katsumichi Hoshino,M. Mori,Takumi Yamamoto,Hiroshi Tamai,Teruaki Shoji,Y.M. Miura,H. Aikawa,Satoshi Kasai,T. Kawakami,Hisato Kawashima,Masaki Maeno,Tatsuma D. Matsuda,K. Oasa,Kazuo Odajima,Hiroaki Ogawa,Toru Ogawa,T. Seike,T. Shiina,Kazuya Uehara,Toshihiko Yamauchi,Norio Suzuki,Hikosuke Maeda +21 more
TL;DR: The observed narrow suppression window suggests that the basic mechanism responsible for the suppression is direct island heating, which is much faster than the time scale of the change of the overall current profile.
Journal ArticleDOI
Edge poloidal rotation profiles of H-mode plasmas in the JFT-2M tokamak
Katsumi Ida,S. Hidekuma,Mamoru Kojima,Y. Miura,Shunji Tsuji,Katsumichi Hoshino,M. Mori,N. Suzuki,Toshihiko Yamauchi +8 more
TL;DR: In this paper, the radial structure of edge poloidal rotation is studied with spectroscopic measurements for L and Hmode plasmas in the JFT•2M tokamak.
Journal ArticleDOI
Density peaking in the JFT-2M tokamak plasma with counter neutral-beam injection.
Katsumi Ida,Sanae Inoue Itoh,K. Itoh,S. Hidekuma,Y. Miura,Hisato Kawashima,Michiyasu Mori,Tatsuma D. Matsuda,N. Suzuki,Hiroshi Tamai,Toshihiko Yamauchi +10 more
TL;DR: A significant particle pinch and reduction of the effective thermal diffusivity were observed after switching the neutral beam direction from coinjection to counterinjection in the JFT-2M tokamak as mentioned in this paper.
Journal ArticleDOI
Regime of improved confinement in neutral-beam-heated limiter discharges of a tokamak
Seio Sengoku,A. Funahashi,Mitsuru Hasegawa,Katsumichi Hoshino,Satoshi Kasai,T. Kawakami,Hisato Kawashima,Tohru Matoba,Tatsuma D. Matsuda,H. Matsumoto,Y.M. Miura,M. Mori,Hiroaki Ogawa,Toru Ogawa,Hidewo Ohtsuka,Teruaki Shoji,Norio Suzuki,Hiroshi Tamai,Yoshihiko Uesugi,Takumi Yamamoto,Toshihiko Yamauchi +20 more
TL;DR: A new operational regime has been observed in neutral-beam--heated JFT-2M limiter discharges, characterized by confinement times close to those of Ohmic and divertor H-mode (good confinement mode) discharges.