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The effect of toroidal plasma rotation on low-frequency reversed shear Alfvén eigenmodes in tokamaks

J W Haverkort2012年Plasma Physics and Controlled FusionIF 2.2出版社

The influence of toroidal plasma rotation on the existence of reversed shear Alfvén eigenmodes (RSAEs) near their minimum frequency is investigated analytically. An existence condition is derived showing that a radially decreasing kinetic energy density is unfavourable for the existence of RSAEs. The Coriolis effect is typically unfavourable for modes moving slower than the plasma or moving in the opposite direction. The generality of the analysis allows for the description of downwards sweeping RSAEs and also rotation-induced modes in regular shear plasmas.

日本語訳

トロイダルプラズマ回転が、最小周波数近傍における逆シア・アルヴェン固有モード(RSAE)の存在に及ぼす影響について、解析的に調査する。運動エネルギー密度が半径方向に減少することがRSAEの存在に不利であることを示す存在条件を導出する。コリオリ効果は、プラズマよりも遅く移動するモード、または逆方向に移動するモードに対して典型的に不利である。本解析の一般性により、下方掃引RSAEおよび通常シアプラズマにおける回転誘起モードの記述が可能となる。

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Alfvén waveAlfvén eigenmodePlasma rotationReversed magnetic shearShear Alfvén waves
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