Absolute parametric excitation by an imperfect pump or by turbulence in an inhomogeneous plasma
Abstract
Finite-bandwidth effects are investigated by using the random phase approximation. The conditions of validity are checked by solving exactly a particular model. It is found that a finite coherence length for the pump wave can favor the existence of absolute instability.
- Publication:
-
Physical Review Letters
- Pub Date:
- January 1976
- DOI:
- 10.1103/PhysRevLett.36.192
- Bibcode:
- 1976PhRvL..36..192L
- Keywords:
-
- Magnetohydrodynamic Stability;
- Nonuniform Plasmas;
- Plasma Turbulence;
- Wave Excitation;
- Magnetic Pumping;
- Stochastic Processes;
- Wentzel-Kramer-Brillouin Method;
- Plasma Physics