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Toroidally asymmetric ELM precursors in TCV

H. Reimerdes, A. Pochelon, W. Suttrop1998年被引用 18Nuclear FusionIF 3出版社

Coherent magnetic oscillations precede edge localized modes (ELMs) in TCV. The precursor has been detected prior to ELMs considered to be of type III and others previously referred to as TCV large ELMs. This permits the identification of both as type III ELMs according to the usual classification scheme. The strong localization of these precursors on the bad curvature side of the plasma and their medium toroidal mode numbers indicate their ballooning character. Unlike conventional MHD modes, these modes start toroidally localized and grow in amplitude and toroidal extent. When the precursor encompasses the whole toroidal circumference, the increased transport phase, as indicated by the characteristic Dα spike, begins.

日本語訳

コヒーレントな磁気振動がTCVにおける周辺局在モード(ELM)に先行する。前駆現象は、タイプIIIとみなされるELMおよび以前にTCV大型ELMと呼ばれていたものの前に検出された。これにより、標準的な分類スキームに従って、両方がタイプIII ELMとして同定される。これらの前駆現象の悪曲率側における強い局在性と、その中程度のトロイダルモード数は、それらのバルーニング的性質を示している。従来のMHDモードとは異なり、これらのモードはトロイダル方向に局在して始まり、振幅とトロイダル方向の広がりを増大させる。前駆現象がトロイダル方向全体に及ぶと、特徴的なDαスパイクによって示される輸送増大位相が始まる。

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Edge localized modeTCV
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