Parametric decay of magneto-acoustic oscillations in a cylindrical plasma
Abstract
Parametric decay of magneto-acoustic oscillations in a cylindrical plasma column is considered, including the Hall effect and the effects of finite resistivity. Growth rates for axisymmetric modes in decay instabilities are derived and applied to the problems of parametric excitation of Alfvén waves and supplementary heating of plasmas. It is shown that both the slow (ion cyclotron) and fast (compressional) modes may be parametrically excited. The threshold &litudes for nonlinear dissipation of pump field energy are calculated and briefly discussed.
- Publication:
-
Journal of Plasma Physics
- Pub Date:
- December 1979
- DOI:
- 10.1017/S0022377800010308
- Bibcode:
- 1979JPlPh..22..549C
- Keywords:
-
- Magnetoacoustic Waves;
- Magnetohydrodynamic Stability;
- Plasma Cylinders;
- Plasma Heating;
- Plasma Oscillations;
- Hall Effect;
- Ion Cyclotron Radiation;
- Propagation Modes;
- Thresholds;
- Wave Excitation;
- Plasma Physics