Nonlinear relativistic plasma resonance: Renormalization group approach
- Авторы: Metelskii I.1,2, Kovalev V.2,3, Bychenkov V.1,2
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Учреждения:
- Lebedev Physical Institute
- Dukhov All-Russian Research Institute of Automatics
- Keldysh Institute of Applied Mathematics
- Выпуск: Том 43, № 2 (2017)
- Страницы: 175-190
- Раздел: Laser Plasma
- URL: https://journals.rcsi.science/1063-780X/article/view/186446
- DOI: https://doi.org/10.1134/S1063780X1702009X
- ID: 186446
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Аннотация
An analytical solution to the nonlinear set of equations describing the electron dynamics and electric field structure in the vicinity of the critical density in a nonuniform plasma is constructed using the renormalization group approach with allowance for relativistic effects of electron motion. It is demonstrated that the obtained solution describes two regimes of plasma oscillations in the vicinity of the plasma resonance— stationary and nonstationary. For the stationary regime, the spatiotemporal and spectral characteristics of the resonantly enhanced electric field are investigated in detail and the effect of the relativistic nonlinearity on the spatial localization of the energy of the plasma relativistic field is considered. The applicability limits of the obtained solution, which are determined by the conditions of plasma wave breaking in the vicinity of the resonance, are established and analyzed in detail for typical laser and plasma parameters. The applicability limits of the earlier developed nonrelativistic theories are refined.
Об авторах
I. Metelskii
Lebedev Physical Institute; Dukhov All-Russian Research Institute of Automatics
Автор, ответственный за переписку.
Email: metelski@lebedev.ru
Россия, Moscow, 119991; Moscow, 127055
V. Kovalev
Dukhov All-Russian Research Institute of Automatics; Keldysh Institute of Applied Mathematics
Email: metelski@lebedev.ru
Россия, Moscow, 127055; Moscow, 125047
V. Bychenkov
Lebedev Physical Institute; Dukhov All-Russian Research Institute of Automatics
Email: metelski@lebedev.ru
Россия, Moscow, 119991; Moscow, 127055