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Structure of intensive MHD fluctuations in torsatron in the mode of low frequency collisions

Structure of intensive MHD fluctuations in torsatron in the mode of low frequency collisions

The structure of MHD-fluctuations in the frequency range 0.5…52 kHz of RF produced plasma was studied in the Uragan-3M torsatron by the use of magnetic probes placed in one of the poloidal cross-sections. Three types of fluctuations with specific spatial (3D) structures were observed. The first type...

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Bibliographic Details
Main Authors: Pashnev, V.K., Sorokovoy, E.L., Petrushenya, A.A., Ozherel’ev, F.I.
Format: Article
Language:English
Published: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2017
Series:Вопросы атомной науки и техники
Subjects:
Магнитное удержание
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/122126
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Summary:The structure of MHD-fluctuations in the frequency range 0.5…52 kHz of RF produced plasma was studied in the Uragan-3M torsatron by the use of magnetic probes placed in one of the poloidal cross-sections. Three types of fluctuations with specific spatial (3D) structures were observed. The first type: when the structure amplitude is changing slowly and the structure rotates as a whole with some frequency. The second type: the structure does not rotate but its amplitude is time varying. The third type is a combination of the first two types: the structure rotates and at the same time its amplitude fluctuates. The correlation was found between the level of fluctuations and the time dependence of plasma energy content before and after transition to regime of better confinement of plasma.

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