Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974azh....51.1277u&link_type=abstract
Astronomicheskii Zhurnal, vol. 51, Nov.-Dec. 1974, p. 1277-1282. In Russian.
Astronomy and Astrophysics
Astrophysics
Electron Beams, Plasma-Particle Interactions, Shock Waves, Solar Corona, Astrophysics, Collisionless Plasmas, Particle Acceleration, Plasmons, Solar Flares, Solitary Waves, Type 2 Bursts
Scientific paper
The effects of quasi-linear relaxation of an electron beam in a plasma whose concentration changes with time are investigated. Analysis is made of the decay of a beam in an inhomogeneous plasma with a monotonically increasing concentration and the influence of an electric field on beam relaxation. It is shown that electrons will be accelerated during beam decay and that the energy of an electric field will be transformed by electrons into the energy of longitudinal waves, which will further accelerate the particles. A soliton traveling through a plasma is analyzed, and it is found that, depending on the plasma parameters, every excitation encountering a nonrelativistic electron beam (at an angle or to the normal) will result in the acceleration of particles or the partial stabilization of the beam at the time of the interaction. These results are applied in the astrophysical context to solar flares and type II radio bursts.
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