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  1. B100 理学部/理学研究科
  2. B100a 雑誌掲載論文
  3. 学術雑誌

Suppression of Ion-Scale Microtearing Modes by Electron-Scale Turbulence via Cross-Scale Nonlinear Interactions in Tokamak Plasmas

http://hdl.handle.net/2237/27093
86833f4f-4021-43fd-92a4-3de11a66ee33
名前 / ファイル ライセンス アクション
PhysRevLett.119.195002.pdf PhysRevLett.119.195002.pdf (1.5 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-11-13
タイトル
タイトル Suppression of Ion-Scale Microtearing Modes by Electron-Scale Turbulence via Cross-Scale Nonlinear Interactions in Tokamak Plasmas
著者 Maeyama, S.

× Maeyama, S.

WEKO 74027

Maeyama, S.

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Watanabe, T.-H.

× Watanabe, T.-H.

WEKO 74028

Watanabe, T.-H.

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Ishizawa, A.

× Ishizawa, A.

WEKO 74029

Ishizawa, A.

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権利
権利情報 © 2017 American Physical Society
抄録
内容記述 Gyrokinetic turbulence simulations are applied for the first time to the cross-scale interactions of microtearing modes (MTMs) and electron-temperature-gradient (ETG) modes. The investigation of the fluctuation response in a multiscale simulation including both types of instabilities indicates that MTMs are suppressed by ETG turbulence. A detailed analysis of nonlinear mode coupling reveals that radially localized current-sheet structures of MTMs are strongly distorted by fine-scale E×B flows of ETG turbulence. Consequently, electron heat transport caused by the magnetic flutter of MTMs is significantly reduced and ETG turbulence dominates electron heat transport.
内容記述タイプ Abstract
出版者
出版者 American Physical Society
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
ISSN
収録物識別子タイプ ISSN
収録物識別子 0031-9007
書誌情報 Physical Review Letters

巻 119, p. 195002-195002, 発行日 2017-11
著者版フラグ
値 publisher
URI
識別子 https://doi.org/10.1103/PhysRevLett.119.195002
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/27093
識別子タイプ HDL
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