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Dependence of the threshold for perturbation field generated m/n = 2/1 tearing modes on the plasma fluid rotation

H.R. Koslowski, Y. Liang, A. Krämer-Flecken, K. Löwenbrück, M. von Hellermann, E. Westerhof, R. C. Wolf, O. Zimmermann, the TEXTOR team2006年被引用 79Nuclear FusionIF 3出版社

The dynamic ergodic divertor (DED) on the TEXTOR tokamak allows for the creation of static and rotating helical magnetic perturbation fields. In the 3/1 configuration the strong m/n = 2/1 sideband excites a locked 2/1 tearing mode above a critical perturbation field strength. The mode onset threshold depends strongly on the plasma fluid rotation with respect to the mode. Rotation in plasma current direction destabilizes the mode in a certain range of rotation frequencies, whereas counter-rotation has a stabilizing influence. The threshold shows a minimum when the frequency of the external perturbation equals the MHD frequency of the mode.

日本語訳

動的エルゴディックダイバータ(DED)は、TEXTORトカマクにおいて、静的および回転するヘリカル磁場摂動の生成を可能にする。3/1配位において、強いm/n = 2/1サイドバンドは、臨界摂動磁場強度を超えると、ロックされた2/1テアリングモードを励起する。モードの発生閾値は、モードに対するプラズマ流体回転に強く依存する。プラズマ電流方向の回転は、特定の回転周波数範囲においてモードを不安定化する一方、反対方向の回転は安定化の影響を与える。外部摂動の周波数がモードのMHD周波数と一致するとき、閾値は最小値を示す。

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textor中精度(概要文一致)

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Tearing mode
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