Nonlinear relativistic plasma resonance: Renormalization group approach
- Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)
- Dukhov All-Russian Research Institute of Automatics (Russian Federation)
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.
- OSTI ID:
- 22614044
- Journal Information:
- Plasma Physics Reports, Vol. 43, Issue 2; Other Information: Copyright (c) 2017 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-780X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Relativistic Non-linear Theory of Plasma Oscillations
Saturation of relativistic Weibel instability and the formation of stationary current sheets in collisionless plasma