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タイトル: Reformation of the Electron Internal Transport Barrier with the Appearance of a Magnetic Island
著者: Kenmochi, N.
Minami, T.
Mizuuchi, T.
Takahashi, C.
Weir, G. M.
Nishioka, K.
Kobayashi, S.
Nakamura, Y.
Okada, H.
Kado, S.
Yamamoto, S.
Ohshima, S.
Konoshima, S.
Ohtani, Y.
Nagasaki, K.
著者名の別形: 釼持, 尚輝
南, 貴司
水内, 亨
高橋, 千尋
西岡, 賢二
小林, 進二
中村, 祐司
岡田, 浩之
門, 信一郎
山本, 聡
大島, 慎介
木島, 滋
大谷, 芳明
長﨑, 百伸
キーワード: Magnetically confined plasmas
Plasma physics
発行日: 8-Jan-2020
出版者: Springer Nature
誌名: Scientific Reports
巻: 10
論文番号: 5
抄録: When realising future fusion reactors, their stationary burning must be maintained and the heat flux to the divertor must be reduced. This essentially requires a stationary internal transport barrier (ITB) plasma with a fast control system. However, the time scale for determining the position of the foot point of an ITB is not clearly understood even though its understanding is indispensable for fast profile control. In this study, the foot point of the electron ITB (eITB) was observed to be reformed at the vicinity of a magnetic island when the island started to form. In addition, the enhanced confinement region was observed to expand during the eITB formation according to the radial movement of the magnetic island toward the outer region. Compared to the time scales of the local heat transport, the faster time scales of the movement of the eITB foot point immediately after island formation (~0.5 ms) suggest the importance of the magnetic island for plasma profile control to maintain stationary burning.
記述: 核融合エネルギーの実現に必要な水素プラズマの超高温領域を瞬時に拡大することに成功 --ゼロエミッションエネルギー実現に向けて前進--. 京都大学プレスリリース. 2020-01-09.
著作権等: © The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
URI: http://hdl.handle.net/2433/245345
DOI(出版社版): 10.1038/s41598-019-56492-x
PubMed ID: 31913300
関連リンク: https://www.kyoto-u.ac.jp/ja/research-news/2020-01-09
出現コレクション:学術雑誌掲載論文等

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