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Observation of m ≥ 2 modes in plasmas with 1/2 ≤ qa < 1

K. Itami, K. Hattori, T. Fujita, Y. Murakami, Z. Yoshida, N. Inoue1988年被引用 7Nuclear FusionIF 3出版社

Internal modes with m = 1 and m ≥ 2, which localize around a pitch minimum, have been studied for ultra-low-q plasmas with 1/2 ≤ qa < 1 in REPUTE-1, where m is the poloidal mode number and qa is the safety factor at the plasma surface. One-dimensional stability analysis has shown that, for finite beta, m ≥ 2 modes have a relatively large growth rate compared with those of the m = 1 modes. The internal structure of the magnetic fluctuations with m = 1 and m ≥ 2 is found to be consistent with the numerically calculated eigenfunctions.

日本語訳

内部モード(m = 1およびm ≥ 2)が、REPUTE-1における1/2 ≤ qa < 1の超低qプラズマについて研究された。ここで、mはポロイダルモード数、qaはプラズマ表面での安全係数である。1次元安定性解析により、有限ベータにおいて、m ≥ 2モードはm = 1モードと比較して比較的大きな成長率を持つことが示された。m = 1およびm ≥ 2の磁気揺動の内部構造は、数値計算により得られた固有関数と一致することが見出された。

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