Coupled quasi-linear wave damping and stochastic acceleration of pickup ions in the solar wind

Details Coupled quasi-linear wave damping and stochastic acceleration of pickup ions in the solar wind Coupled quasi-linear wave damping and stochastic acceleration of pickup ions in the solar wind

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96..161b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Jan. 1, 1991, p. 161-178.

Physics

96

Energetic Particles, Magnetohydrodynamic Waves, Particle Acceleration, Plasma-Particle Interactions, Solar Wind, Interstellar Matter, Ionic Waves, Kinetic Equations, Stochastic Processes

Scientific paper

The evolution of the energetic ion omnidirectional distribution function and the intensities of MHD waves propagating parallel and antiparallel to the ambient magnetic field is studied using coupled, partially homogeneous quasi-linear kinetic equations. This treatment of stochastic acceleration is the first one in which the back reaction of the ions on the turbulence is included self-consistently. Numerical solutions to the kinetic equations are presented for four cases of pickup ions in the solar wind which show the essential features of the evolution: (1) interstellar pickup helium near a heliocentric radial distance of 1 AU, (2) interstellar pickup hydrogen near 10 AU, (3) water group pickup ions downstream of the bow wave of Comet Giacobini-Zinner for parameters observed during the International Cometary Explorer flyby, and (4) water group pickup ions downstream of the bow wave of Comet Halley for parameters observed during the Giotto flyby.

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