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Decay of the ion-cyclotron instability in magnetized plasmas with thermally anisotropic minority ions

R M O Galvao, G Gnavi, L Comberoff, F T Gratton1994年Plasma Physics and Controlled FusionIF 2.2出版社

It is well known that the temperature anisotropy of either the minority or majority species in a two-component plasma can make the electromagnetic ion-cyclotron mode unstable. This instability may be particularly relevant in tokamak experiments where high-power ion-cyclotron resonance heating (ICRH) is used to create an energetic population of minority ions. We investigate the nonlinear stability of this mode and show that it may decay by coupling with the sound waves supported by the two species or by a modulational decay into sideband waves.

日本語訳

二成分プラズマにおける少数成分または多数成分のいずれかの温度異方性が、電磁イオンサイクロトロンモードを不安定にし得ることはよく知られている。この不安定性は、高パワーのイオンサイクロトロン共鳴加熱(ICRH)を用いて高エネルギーの少数成分イオンを生成するトカマク実験において特に重要となり得る。我々はこのモードの非線形安定性を調査し、それが二成分によって支持される音波との結合による減衰、または側帯波への変調的減衰を起こし得ることを示す。

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Magnetized plasmaCyclotron instability
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