Is it possible that MHD instability triggers a transition into the improved confinement regime of toroidal plasmas?


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Толық мәтін

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Аннотация

Analyzing the experimental data from L-2M stellarator and performing appropriate theoretical analysis, the authors affirmatively answer the question raised in the title of the article. The external peeling mode is proposed as the instability triggering the transition. Peeling mode stability in magnetic-hill Mercierstable plasmas is analyzed analytically. It is shown that correctly taking into account vacuum region forbids internal peeling modes, while the external peeling mode has a threshold with respect to the plasma pressure gradient. Calculations and experimental data are in reasonable agreement.

Авторлар туралы

S. Shchepetov

Prokhorov General Physics Institute

Хат алмасуға жауапты Автор.
Email: shch@fpl.gpi.ru
Ресей, Moscow, 119991

D. Vasilkov

Prokhorov General Physics Institute; Bauman Moscow State Technical University

Email: shch@fpl.gpi.ru
Ресей, Moscow, 119991; Moscow, 105005

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