Title :
Parametric excitation of electrostatic whistler wave and electron Bernstein wave by extraordinary EM wave
Author :
Kumar, Atul ; Sugawa, M. ; Isobe, S. ; Sharma, R.P.
Author_Institution :
Dept. of Phys., Ehime Univ., Matsuyama, Japan
fDate :
12/1/1995 12:00:00 AM
Abstract :
In the present paper, the parametric decay instability of an extraordinary electromagnetic wave (X-wave) into an electron Bernstein wave (EBW) and an electrostatic whistler wave (W-wave) has been studied. Expressions are derived for homogeneous threshold, growth rate, and convective threshold for this instability. The relevance of the present parametric process has been pointed out to explain the generation of whistler mode radiations in the SL-2 experiment, ionospheric modification experiment, in the polar cusp region of the magnetosphere, as well as during intense electron cyclotron resonance heating in the MTX tokamak
Keywords :
atmospheric radiation; ionosphere; ionospheric disturbances; magnetosphere; parametric instability; plasma Bernstein waves; plasma confinement; plasma electromagnetic wave propagation; plasma electrostatic waves; plasma radiofrequency heating; plasma toroidal confinement; whistlers; MTX tokamak; SL-2 experiment; convective threshold; electron Bernstein wave; electrostatic whistler wave; extraordinary EM wave; extraordinary electromagnetic wave; growth rate; homogeneous threshold; intense electron cyclotron resonance heating; ionospheric modification experiment; magnetosphere; parametric decay instability; parametric excitation; polar cusp region; whistler mode radiations; Cyclotrons; Electromagnetic scattering; Electron beams; Electrostatics; Frequency; Ionosphere; Laboratories; Magnetosphere; Plasma waves; Resonance;
Journal_Title :
Plasma Science, IEEE Transactions on
