Trapping of turbulence clumps by geodesic acoustic modes

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抜粋

Dynamics of drift wave turbulence interacting with geodesic acoustic modes (GAMs) is investigated, focusing on the turbulence trapping in a phase space (real-space and wavenumber-space). Based on the wave-kinetic theory, we consider the dynamics of the turbulence coupling with the GAMs for two limiting cases; one is the case of GAMs driven by the turbulence, and the another is the case of the GAMs driven by energetic particles (EGAMs). For the case of the turbulence driven GAMs, the turbulence intensity is modulated spatially and temporally due to the trapping effect. The turbulence trapping significantly affects the spatial profile of the turbulence: The turbulence exclusion occurs at the positive curvature region, and the turbulence accumulation is significant at the negative curvature region. Their relation is kept with the propagation. It is also shown that the trapped turbulence by the EGAMs can be carried nonlocally in space. The trapped turbulence can penetrate the transport barrier and can propagate regions where the turbulence is stable. The turbulence trapping plays important roles for the nonlocal propagation of the turbulence and for determining the spatial profile of the turbulence intensity.

元の言語英語
ホスト出版物のタイトルFront-runners' Symposium on Plasma Physics in Honor of Professors Kimitaka Itoh and Sanae-I. Itoh
編集者Yasushi Todo, Katsumi Ida
出版者American Institute of Physics Inc.
ISBN(印刷物)9780735417090
DOI
出版物ステータス出版済み - 8 1 2018
イベントFront-runners� Symposium on Plasma Physics in Honor of Professors Kimitaka Itoh and Sanae-I. Itoh, 2018 - Toki, Gifu, 日本
継続期間: 1 11 2018 → …

出版物シリーズ

名前AIP Conference Proceedings
1993
ISSN(印刷物)0094-243X
ISSN(電子版)1551-7616

その他

その他Front-runners� Symposium on Plasma Physics in Honor of Professors Kimitaka Itoh and Sanae-I. Itoh, 2018
日本
Toki, Gifu
期間1/11/18 → …

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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  • これを引用

    Sasaki, M. (2018). Trapping of turbulence clumps by geodesic acoustic modes. : Y. Todo, & K. Ida (版), Front-runners' Symposium on Plasma Physics in Honor of Professors Kimitaka Itoh and Sanae-I. Itoh [020007] (AIP Conference Proceedings; 巻数 1993). American Institute of Physics Inc.. https://doi.org/10.1063/1.5048717