A physical model for oblique whistler-mode instabilities

Details A physical model for oblique whistler-mode instabilities A physical model for oblique whistler-mode instabilities

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ang....38..111s&link_type=abstract

Annales de Geophysique, vol. 38, Apr.-June 1982, p. 111-118.

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Magnetohydrodynamic Stability, Plasma Resonance, Plasma-Electromagnetic Interaction, Whistlers, Cerenkov Radiation, Cyclotron Resonance, Electrons

Scientific paper

A physical model for the resonance interaction between obliquely propagating whistlers and electrons is considered. In particular it is pointed out that, concerning the Cerenkov resonance, the energy exchange takes place mainly between the electrons and the perpendicular component of the wave electric field as occurs with other resonances. The well known formula for the increment of oblique whistler mode instability is obtained by a new method, based on the calculation of the energy exchange between whistlers and electrons. Gendrin's (1981) criterium for the instability based on the mutual location of the isodensity, isoenergy and diffusion curves in the velocity space is shown to remain valid in the general case of obliquely propagating whistlers. Some well known properties of oblique whistler mode interaction with the electrons are obtained using this criterium.

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