On the modifications of the whistler mode instability in the magnetosphere in the presence of parallel electric field by cold plasma injection

Details On the modifications of the whistler mode instability in the magnetosphere in the presence of parallel electric field by cold plasma injection On the modifications of the whistler mode instability in the magnetosphere in the presence of parallel electric field by cold plasma injection

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.5138m&link_type=abstract

Journal of Geophysical Research, vol. 85, Oct. 1, 1980, p. 5138-5142.

Physics

5

Cold Plasmas, Electric Fields, Magnetohydrodynamic Stability, Magnetospheric Instability, Plasma Interactions, Whistlers, Anisotropic Media, Equatorial Atmosphere, Plasma-Particle Interactions

Scientific paper

A dispersion relation for the whistler mode waves in an anisotropic warm magnetoplasma in the presence of a parallel electric field has been derived. The modifications in the whistler mode instability produced by cold plasma injection to an infinite uniform anisotropic plasma (A less than 1) in the presence of a parallel electric field have been studied. The study has been performed with plasma parameters similar to those observed in the equatorial magnetosphere at 6.6 earth radii. The electric field is found to have pronounced effect for small values of n(c)/n(w) and extends the range of instability in k space toward higher wavelengths. The cold plasma injection increases the range of instability in k space toward lower wave lengths. The effects of electric field seem to be insignificant for large values n(c)/n(w).

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