Physics – Plasma Physics
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aps..dppgp1082r&link_type=abstract
American Physical Society, 48th Annual Meeting of the Division of Plasma Physics, October 30-November 3, 2006, abstract #GP1.082
Physics
Plasma Physics
Scientific paper
Whether an efficient collisonless temperature equilibration mechanism exists for a two-temperature ion-electron plasma, with Ti>Te, is important for understanding astrophysical phenomena such as radiatively inefficient accretion flows and supernova remnants. Here we study whether Weibel instability driven by a proton temperature anisotropy can be such a mechanism. Analysis and PIC simulations find that in an unmagnetized plasma, although the instability grows at a rate much larger than the ion-electron collision rate, the saturated magnetic field is low and inefficient to couple the ions and electrons. It is speculated that in a magnetized plasma the instability can provide a more efficient coupling.
Blackman Eric
Fong Wen-fai
Ren Chuang
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