Abstract
Based on an improved quasilongitudinal approximation of the Appleton-Hartree dispersion equation for whistler-mode waves, we have derived the formula for the squared whistler-mode refractive index N 2 in which the effects of plasma finite density and finite temperature and anisotropy are considered as the perturbations of the corresponding squared refractive index N 0 0 for whistler-mode waves in a cold and infinitely dense plasma. The relative influence of the effects of plasma finite density and temperature on the value of N 2, the direction of whistler-mode group velocity, the whistler-mode energy guidance along magnetic field lines, and the whistler-mode polarization, growth and damping are considered. The conditions under which these effects compensate each other for the above-mentioned characteristics of whistler-mode waves are pointed out.
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