Artcicle: Heating of beam ions by ion acoustic waves

Details Artcicle: Heating of beam ions by ion acoustic waves Artcicle: Heating of beam ions by ion acoustic waves

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998angeo..16..403v&link_type=abstract

Annales Geophysicae, vol. 16, Issue 4, pp.403-412

Physics

2

Scientific paper

Satellite measurements show that ion beams above the auroral acceleration region are heated to hundreds of eV in a direction perpendicular to the magnetic field. We show that ion acoustic waves may be responsible for much of this heating. Even in the absence of a positive slope in the velocity distribution of the beam ions, ion acoustic waves can be generated by a fan instability. We present analytical estimates of the wave growth rate and ion beam heating rate. These estimates, which are confirmed by particle simulations, indicate that the perpendicular temperature of the beam ions will increase by 30 eV/s, or by 1 eV in 20-25 km. From the simulations we also conclude that the heating saturates at a perpendicular temperature around 200 eV, which is consistent with observations.

Affiliated with

Also associated with

No associations

Rating

Artcicle: Heating of beam ions by ion acoustic waves 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 Artcicle: Heating of beam ions by ion acoustic waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Artcicle: Heating of beam ions by ion acoustic waves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1602386