Oscillating twostream instabifity of upperhybrid laser radiation in a plasma
Abstract
In the vicinity of a turning point, a highpower laser radiation (in the upper hybrid mode) is unstable for short wavelength, purely growing perturbations, viz, oscillating twostream instability. The nonlinearity in the lowfrequency response arises through the parallel pondermotive force whereas in the high frequency response it arises through the equation of continuity. In the limits of long and short perpendicular wavelengths, κ┴ρ_{e}< 1 and κ┴ρ_{e} > 1, the growth rates are found to be γ∞ │κ┴.V_{0┴}│^{2}, where ρ_{e} and V_{0┴} are the electron Larmor radius and oscillatory drift velocity.
 Publication:

Journal of Plasma Physics
 Pub Date:
 June 1980
 DOI:
 10.1017/S0022377800022510
 Bibcode:
 1980JPlPh..23..515S
 Keywords:

 Laser Plasma Interactions;
 Magnetohydrodynamic Stability;
 Plasma Oscillations;
 Plasma Waves;
 Electrostatic Waves;
 Laser Fusion;
 Wave Propagation;
 Plasma Physics