Physics
Scientific paper
Aug 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983phfl...26.2263f&link_type=abstract
Physics of Fluids (ISSN 0031-9171), vol. 26, Aug. 1983, p. 2263-2270.
Physics
38
Cosmic Plasma, Cyclotron Frequency, Electron Plasma, Gas Masers, Magnetohydrodynamic Stability, Plasma Waves, Anisotropy, Thermal Plasmas
Scientific paper
The electron cyclotron maser instability is analyzed for a plasma which consists of a suprathermal electron component characterized by velocity-space anisotropies in directions both parallel and perpendicular to the ambient magnetic field, as well as a high-density thermal plasma in which omegae is approximately equal to Omegae (where omegae and Omegae are the electron plasma and cyclotron frequencies). The complete relativistic resonance condition is used and shown to result in a 'resonance ellipse' in momentum space. The instability is considered for both cold and warm suprathermal electron distributions, and for frequencies omega approximately equal to Omegae in the ordinary mode and omega approximately equal to 2(Omegae) in the fast extraordinary mode. It is shown that the growth rates are comparable for these harmonics over a wide range of parameters which, since they are escape modes of the plasma, can lead to comparable radiation intensities.
Freund H. P.
Wong Hung K.
Wu Shang-Chen
Xu Ming-Jie
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