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Magnetohydrodynamic activity during edge localized modes on ASDEX

S. Von Goeler, O. Klüber, G. Fussmann, J. Gernhardt, M. Kornherr1990年被引用 15Nuclear FusionIF 3出版社

Magnetohydrodynamic (MHD) activity during edge localized modes (ELMs) has been monitored in the ASDEX tokamak. Besides a fast inward shift of the plasma column, a helical MHD perturbation has been found to accompany ELMs. For the discharges investigated, the helical instability has a poloidal mode number m of 3 or 4 and a toroidal mode number n of 1, and it propagates in the direction of the electron diamagnetic drift. It seems to be identical with the Toi mode, which has been observed to disappear during L-H transitions.

日本語訳

周辺局在モード(ELM)中の磁気流体力学(MHD)活動がASDEXトカマクにおいて監視された。プラズマ柱の高速な内側へのシフトに加えて、螺旋状のMHD摂動がELMに伴って発生することが見出された。調査された放電において、螺旋不安定性はポロイダルモード数mが3または4、トロイダルモード数nが1であり、電子反磁性ドリフトの方向に伝播する。これは、L-H遷移中に消滅することが観測されているToiモードと同一であると思われる。

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MagnetohydrodynamicsASDEXEdge localized mode
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