Parametric decay of an extraordinary electromagnetic wave in relativistic plasma

Parametric instability of an extraordinary electromagnetic wave in plasma preheated to a relativistic temperature is considered. A set of self-similar nonlinear differential equations taking into account the electron “thermal” mass is derived and investigated. Small perturbations of the parameters of the heated plasma are analyzed in the linear approximation by using the dispersion relation determining the phase velocities of the fast and slow extraordinary waves. In contrast to cold plasma, the evanescence zone in the frequency range above the electron upper hybrid frequency vanishes and the asymptotes of both branches converge. Theoretical analysis of the set of nonlinear equations shows that the growth rate of decay instability increases with increasing initial temperature of plasma electrons. This result is qualitatively confirmed by numerical simulations of plasma heating by a laser pulse injected from vacuum. © 2015, Pleiades Publishing, Ltd.

Авторы
Dorofeenko V.G.1 , Krasovitskiy V.B. 2 , Turikov V.A. 3
Редакторы
-
Журнал
Издательство
-
Номер выпуска
3
Язык
Английский
Страницы
262-268
Статус
Опубликовано
Подразделение
-
Номер
-
Том
41
Год
2015
Организации
  • 1 Institute for Advanced Studies, Stumpergasse 56, Vienna, 1060, Austria
  • 2 Keldysh Institute of Applied Mathematics, Miusskaya pl. 4, Moscow, 125047, Russian Federation
  • 3 Peoples’ Friendship University of Russia, ul. Miklukho-Maklaya 6, Moscow, 117198, Russian Federation
Ключевые слова
-
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/4753/