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Features of ion and electron fishbone instabilities on HL-2A

W. Chen, X.T. Ding, Yi. Liu, Q.W. Yang, X.Q. Ji, M. Isobe, G.L. Yuan, Y.P. Zhang, Y. Zhou, X.Y. Song2010年被引用 87Nuclear FusionIF 3出版社

The features of ion and electron fishbone instabilities have been investigated during neutral beam injection (NBI) and electron cyclotron resonance heating (ECRH) on HL-2A. Some new phenomena, such as frequency jumps and V-font-style sweeping, have been presented in the paper. Three kinds of i-fishbones, including hybrid sawtooth–fishbone (sawbone), run-on fishbone and classical fishbone, have been identified during NBI. During high power (PECRH > 0.7 MW) ECRH, the experimental results indicate that the e-fishbone frequencies are higher than those during low power ECRH, and are provided with up- and down-chirping behaviours, and sometimes also with V-font-style sweeping. The periodic mode frequency jumps have also been detected by a soft x-ray array. It is possible to correlate these phenomena with the redistribution of energetic electrons.

日本語訳

HL-2Aにおいて、中性粒子ビーム入射(NBI)および電子サイクロトロン共鳴加熱(ECRH)中に、イオンおよび電子フィッシュボーン不安定性の特徴を調査した。周波数ジャンプやV字型スイープなどのいくつかの新現象が、本論文で提示された。NBI中に、ハイブリッド鋸歯状-フィッシュボーン(ソーボーン)、ランオン・フィッシュボーン、および古典的フィッシュボーンを含む3種類のi-フィッシュボーンが同定された。高パワー(PECRH > 0.7 MW)ECRH中、実験結果は、e-フィッシュボーン周波数が低パワーECRH中よりも高く、アップチャープおよびダウンチャープ挙動を示し、時にはV字型スイープも伴うことを示している。周期的なモード周波数ジャンプも、軟X線アレイによって検出された。これらの現象を高エネルギー電子の再分布と関連付けることが可能である。

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