Plasma acceleration by finite amplitude Alfven wave beams

Details Plasma acceleration by finite amplitude Alfven wave beams Plasma acceleration by finite amplitude Alfven wave beams

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...234..560s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 234, no. 1-2, Aug. 1990, p. 560-566.

Astronomy and Astrophysics

Astrophysics

3

Cosmic Plasma, Magnetohydrodynamic Waves, Magnetohydrodynamics, Plasma Acceleration, Solitary Waves, Wave Equations, Wave Propagation

Scientific paper

The nonlinear behavior of a finite-amplitude Alfven wave beam propagating in an ideal and uniform magnetoplasma is studied using the multiple scale method. It is shown that nonlinearities lead to beam defocusing which ultimately leads to plasma acceleration in the beam region. The relevance of this acceleration mechanism for astrophysical plasmas is pointed out.

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