Physics
Scientific paper
Nov 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9818985l&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A11, p. 18,985-18,997
Physics
5
Gyrofrequency, Ion Scattering, Mach Number, Plasma Dynamics, Plasma Heating, Reflection, Shock Fronts, Shock Waves, Bow Waves, Computerized Simulation, Ramps, Solar Wind
Scientific paper
Ion heating in high-Mach-number (MA greater than or equal to 3) quasi-parallel shocks is accomplished by ion reflections at the shock ramp and nonadiabatic pitch angle scattering through nonlinear waves in the shock transition region. Two types of ion reflection events are observed in high-Mach-number shock simulations: (1) the reflecting-reentering event and (2) the backstreaming-gyrating event. The behavior of ion reflection depends on the orientation of the ramp field relative to the upstream field. A gyro-reflection model is proposed to provide a physical explanation for the two types of ion reflection events observed in the high-Mach-number shocks. The rotation of the ramp field with time leads to alternative occurence of the two types of ion reflection events, which in turn leads to shock front reformation in the high-Mach-number quasi-parallel shock. The time scale for the shock front reformation is estimated to be about 1 to 2 upstream ion gyroperiods, which is about 10 ions gyroperiods for ions experiencing overshot magnetic field in the shock ramp.
Kan Joseph R.
Lyu L. H.
No associations
LandOfFree
Ion dynamics in high-Mach-number quasi-parallel 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 Ion dynamics in high-Mach-number quasi-parallel shocks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ion dynamics in high-Mach-number quasi-parallel shocks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-810934