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Nonlinear dynamics of Alfvén eigenmodes in toroidal plasmas

L Chen, F Zonca, R A Santoro, G Hu1998年Plasma Physics and Controlled FusionIF 2.2出版社

Nonlinear saturation of toroidal Alfvén eigenmodes (TAE) via mode - mode couplings is investigated both analytically and numerically. It is demonstrated that, as the TAE mode amplitude increases, the corresponding nonlinear ponderomotive force produces a fine-structure density modulation, which then causes enhanced energy dissipation in the short scales and leads eventually to the nonlinear saturation of TAE.

日本語訳

トロイダルアルヴェン固有モード(TAE)のモード間結合による非線形飽和を、解析的および数値的に調査した。TAEモードの振幅が増大するにつれて、対応する非線形ポンデロモーティブ力が微細構造の密度変調を生成し、それが短波長スケールでのエネルギー散逸の増強を引き起こし、最終的にTAEの非線形飽和をもたらすことが実証された。

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Alfvén waveAlfvén eigenmode
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