Computer Science
Scientific paper
Apr 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ssrv..tmp..127a&link_type=abstract
Space Science Reviews, Online First
Computer Science
Plasma Instabilities, Alfvén Waves, Parametric Effects, Wave Modes, Plasma Heating
Scientific paper
The results of a study of linear and nonlinear properties of Alfvén-cyclotron waves propagating along a background magnetic field in collisionless plasmas are presented. Kinetic theory and one-dimensional hybrid simulations are used to identify the complete family of growing and damped wave modes and the connection with the spontaneous fluctuations in plasmas. The self-consistent reshaping of initially cold ion velocity distributions, the simultaneous generation of beam protons, and the preferential heating and acceleration of alpha particles are shown to occur by the same mechanism: ion trapping and induced pitch-angle scattering by parametrically driven ion acoustic waves.
Araneda Jaime A.
Astudillo Hernán
Marsch Eckart
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