Effect of growth-rate modulation on the nonlinear mode coupling between stable and unstable plasma waves
Abstract
An investigation is made of the effect of an external growth-rate modulation on the saturation of a linearly unstable plasma wave by means of nonlinear Landau damping. Different ways of exciting the saturated system by suitable choices of modulation frequency are discussed and the characteristics of the resulting instabilities, like thresholds, growth-rates, maximum amplitudes and final saturation levels are determined.
- Publication:
-
Journal of Plasma Physics
- Pub Date:
- October 1977
- DOI:
- 10.1017/S0022377800021140
- Bibcode:
- 1977JPlPh..18..363A
- Keywords:
-
- Amplitude Modulation;
- Coupled Modes;
- Magnetohydrodynamic Stability;
- Plasma Resonance;
- Plasma Waves;
- Propagation Modes;
- Landau Damping;
- Nonlinear Equations;
- Spontaneous Emission;
- Wave Equations;
- Plasma Physics