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Excitation and suppression of kink modes by coupling to ion-acoustic waves

P.N. Guzdar, A. Sen, P.K. Kaw1975年被引用 2Nuclear FusionIF 3出版社

The stability of kink modes in a cylindrical plasma column under the influence of an oscillating magnetic field applied in the azimuthal direction is studied. The frequency of the applied field is chosen close to the ion-acoustic frequency. It is found that coupling to damped ion-acoustic waves induces a small real frequency to the kink modes which can significantly affect their growth rates. Conditions for parametrically suppressing (or exciting) these modified kink modes are specified.

日本語訳

円筒プラズマ柱におけるキンクモードの安定性を、方位角方向に印加された振動磁場の下で研究する。印加磁場の周波数はイオン音波周波数に近い値に選ばれる。減衰するイオン音波との結合により、キンクモードに小さな実周波数が誘起され、それが成長率に有意に影響を及ぼし得ることが見出される。これらの修正されたキンクモードをパラメトリックに抑制(または励起)するための条件が明示される。

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Ion acoustic waveKink mode
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