Geodesic acoustic modes in noncircular cross section tokamaks

The influence of the shape of the plasma cross section on the continuous spectrum of geodesic acoustic modes (GAMs) in a tokamak is analyzed in the framework of the MHD model. An expression for the frequency of a local GAM for a model noncircular cross section plasma equilibrium is derived. Amendments to the oscillation frequency due to the plasma elongation and triangularity and finite tokamak aspect ratio are calculated. It is shown that the main factor affecting the GAM spectrum is the plasma elongation, resulting in a significant decrease in the mode frequency. © 2017, Pleiades Publishing, Ltd.

Авторы
Sorokina E.A. 1, 2 , Lakhin V.P.1 , Konovaltseva L.V. 2 , Ilgisonis V.I. 1, 2, 3
Журнал
Номер выпуска
3
Язык
Английский
Страницы
271-279
Статус
Опубликовано
Том
43
Год
2017
Организации
  • 1 National Research Center “Kurchatov Institute,”, Moscow, Russian Federation
  • 2 People’s Friendship University of Russia, Moscow, Russian Federation
  • 3 National Research Nuclear University “MEPhI,”, Moscow, Russian Federation
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/5607/
Поделиться

Другие записи