Effect of bounce resonance on Alfven-wave excitation outside the plasmasphere

Details Effect of bounce resonance on Alfven-wave excitation outside the plasmasphere Effect of bounce resonance on Alfven-wave excitation outside the plasmasphere

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ge%26ae..17..894p&link_type=abstract

Geomagnetizm i Aeronomiia, vol. 17, Sept.-Oct. 1977, p. 894-899. In Russian.

Physics

1

Geomagnetic Pulsations, Magnetohydrodynamic Waves, Magnetospheric Instability, Plasma Resonance, Wave Excitation, Magnetic Field Configurations, Plasma Oscillations, Plasmapause

Scientific paper

The stability of Alfven oscillations in the hot plasma located in the curvilinear geomagnetic field is considered. A general expression for the Alfven-instability increment is obtained, and the value of the increment is calculated numerically for the case of a parabolic magnetic field and a disturbance with an arbitrarily small wavelength that is of the order of the bounce frequency of particles oscillating between reflection points. The frequency dependence of the instability increment in the presence of bounce resonances is examined. Experimental data concerning Pi1c pulsations are interpreted on the basis of this frequency dependence.

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