Physics – Plasma Physics
Scientific paper
Apr 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996jgr...101.7881g&link_type=abstract
Journal of Geophysical Research, Volume 101, Issue A4, p. 7881-7890
Physics
Plasma Physics
3
Magnetospheric Physics: Energetic Particles, Trapped, Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Space Plasma Physics: Charged Particle Motion And Acceleration, Space Plasma Physics: Kinetic And Mhd Theory
Scientific paper
Analytical expressions for the components of the dielectric permeability operator tensor of plasmas confined in planetary dipolar magnetospheres are derived. The kinetic Vlasov's equation of a two-dimensional plasma model, confined by an axisymmetric mirror trap, with circular magnetic field lines has been used. The conditions for single-particle resonances of trapped particles are discussed, taking into account the bounce resonances. It is shown that the collisionless Cherenkov damping of the Alfvén and magnetosonic waves differs substantially from the Cherenkov damping of these modes in the straight confining magnetic field case; this is true due to the presence of the trapped particles. Estimations of the damping coefficients for Langmuir and kinetic Alfvén waves are made, and some observational consequences of this study are discussed.
de Assis Altair S.
de Azevedo Carlos A.
Grishanov Nikolay I.
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