Physics
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998phpl....5.4384g&link_type=abstract
Physics of Plasmas, Volume 5, Issue 12, pp. 4384-4394 (1998).
Physics
3
Electromagnetic Wave Propagation, Magnetohydrodynamic Waves, Plasma Kinetic Equations, Dielectric Properties
Scientific paper
Longitudinal permittivity elements of an axisymmetric magnetosphere are derived by solving the drift-kinetic equation for the trapped particles, in a two-dimensional plasma model with dipole and circular magnetic field lines. The drift-kinetic equation is solved for waves in the frequency range much larger than the drift frequencies. It is shown that the collisionless dissipation of such waves by the bounce-resonant interaction with the trapped particles differs substantially from one in a straight magnetic field. The estimations of the electron Landau damping for kinetic Alfvén waves in magnetospheric plasmas are presented. Imaginary part of the longitudinal permittivity is analyzed numerically in the wide range of wave frequencies and plasma parameters.
de Assis Altair S.
de Azevedo Carlos A.
Grishanov Nikolay I.
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