Physics – Plasma Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsh12a0398w&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SH12A-0398
Physics
Plasma Physics
2169 Sources Of The Solar Wind, 7509 Corona, 7839 Nonlinear Phenomena, 7843 Numerical Simulation Studies, 7867 Wave/Particle Interactions
Scientific paper
Ion heating through wave-particle interaction is of great interests in space plasma physics. A series of 1-D and 2-D hybrid simulations have been carried out to investigate the ion heating process in beam-plasma interaction, in which Alfven turbulences are produced via nonlinear evolution of beam-plasma instabilities. In the nonlinear stage of instability driven by high speed (>>VA) ion beams, the excited waves evolve to Alfven turbulence following ω =kcos α VA in the plasma frame, where α is the angle between the wave vector k and the background magnetic field B0. The power law spectra E(f) ~ f-γ, where γ ~ 1.0-1.8. The background ions are accelerated to a bulk flow speed V ~VA relative to their original speed. The background plasma is heated significantly, saturated at a final temperature T. The heating rate T/T0 can reach 10 to 200 for typical plasmas in the solar corona, where T0 is the initial temperature of background plasma. It is found that the ion heating in obliquely propagating waves (α ¬ = 0) is more effective than that in the case of α=0. The physics of the beam-plasma interaction and the ion heating is investigated. Heating of heavy ions by such mechanism is also simulated. Application to ion heating in the solar corona and solar wind will be discussed.
Lin Yangtin
Wang Xinhua
Wu Congjun
No associations
LandOfFree
Beam-Plasma Interaction and Associated Ion Heating 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 Beam-Plasma Interaction and Associated Ion Heating, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Beam-Plasma Interaction and Associated Ion Heating will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1434962