Scattering of electromagnetic waves by anomalous fluctuations of a magnetized plasma
Abstract
Fluctuations and scattering of transverse electromagnetic waves by density fluctuations in a magnetized plasma in the presence of parametric decay of the pump wave are investigated. The spectral density of electron-density fluctuations is calculated. It is shown that the differential scattering cross-section has sharp maxima at the ion-acoustic and lower-hybrid frequencies when parametric decay of the lower-hybrid pump wave occurs. We note that scattering at the ion-acoustic frequency is dominant. When the pump-wave amplitude tends to the threshold strength of the electric field the scattering cross-section increases anomalously, i.e. there is critical opalescence.
- Publication:
-
Journal of Plasma Physics
- Pub Date:
- April 1990
- DOI:
- 10.1017/S0022377800014719
- Bibcode:
- 1990JPlPh..43..165P