Physics
Scientific paper
Oct 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.5923m&link_type=abstract
Journal of Geophysical Research, vol. 84, Oct. 1, 1979, p. 5923-5928.
Physics
13
Earth Magnetosphere, Electric Fields, Magnetohydrodynamic Waves, Particle Collisions, Wave Propagation, Whistlers, Anisotropy, Atmospheric Models, Electrostatics, Propagation Modes, Temperature Distribution, Wave Attenuation
Scientific paper
A dispersion relation for the whistler mode wave propagation in an anisotropic warm magnetoplasma in the presence of a weak parallel electrostatic field has been derived from linearized coupled Boltzmann-Maxwell equations with collision frequency independent of particle velocity. An expression for the growth rate has been derived in the presence of an electric field and for small temperature anisotropy for the whistler mode wave. Under suitable approximation we recover the earlier known results. The modifications introduced in the growth rate by the electric field and temperature anisotropy have been discussed using observed plasma parameters at 6.6 earth radii. It is observed that growth (damping) of whistler mode waves is possible when the wave vector is parallel (antiparallel) to the static electric field. The effect of the electric field is more pronounced at low frequency (higher wave number) wave spectrum.
Mishra S. P.
Misra K. D.
Singh D. B.
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