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

• Дата: 2017
• Автори: Pashnev, V.K., Sorokovoy, E.L., Petrushenya, A.A., Ozherel’ev, F.I.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2017
• Назва видання: Вопросы атомной науки и техники
• Теми: Магнитное удержание
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/122126
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Structure of intensive MHD fluctuations in torsatron in the mode of low frequency collisions / V.K. Pashnev, E.L. Sorokovoy, A.A. Petrushenya, F.I. Ozherel’ev // Вопросы атомной науки и техники. — 2017. — № 1. — С. 49-53. — Бібліогр.: 17 назв. — англ.

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.