Electromagnetic ion beam instabilities - Hot beams at interplanetary shocks

Details Electromagnetic ion beam instabilities - Hot beams at interplanetary shocks Electromagnetic ion beam instabilities - Hot beams at interplanetary shocks

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...288..342g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 288, Jan. 1, 1985, p. 342-352. Research supported by the U.S. Department of

Astronomy and Astrophysics

Astrophysics

24

Interplanetary Medium, Magnetospheric Instability, Shock Waves, Space Plasmas, Ion Beams, Magnetohydrodynamic Stability, Plasma-Electromagnetic Interaction, Wave Propagation

Scientific paper

This paper considers Vlasov instabilities driven by a very hot ion beam streaming parallel to a magnetic field. The linear theory of electromagnetic instabilities driven by such a beam in a homogeneous, collisionless, nonrelativistic plasma is used. Numerical solutions of the full linear dispersion equation for bi-Maxwellian distribution functions are presented. If the thermal speed of the beam is greater than its drift speed, the two dominant modes are the right-hand and left-hand resonant ion beam instabilities. The parametric dependencies of the threshold drift speeds and growth rates for both modes are presented. In particular, the thresholds are shown to be sensitive functions of the beam temperature anisotropies. Arguments are presented that these two modes are driven by the suprathermal ion component at interplanetary shocks, and that the growth of these modes is sufficient to account for the amplitudes of MHD-like waves observed at such shocks.

Affiliated with

Also associated with

No associations

Rating

Electromagnetic ion beam instabilities - Hot beams at interplanetary shocks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Electromagnetic ion beam instabilities - Hot beams at interplanetary shocks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetic ion beam instabilities - Hot beams at interplanetary shocks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-925291