THE EFFECTIVE POLYTROPIC INDEX IN A MAGNETIZED PLASMA

Authors
PUDOVKIN MI MEISTER CV BESSER BP BIERNAT HK
Citation
Mi. Pudovkin et al., THE EFFECTIVE POLYTROPIC INDEX IN A MAGNETIZED PLASMA, J GEO R-S P, 102(A12), 1997, pp. 27145-27149
Citations number
22
Journal title
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN journal
21699380 → ACNP
Volume
102
Issue
A12
Year of publication
1997
Pages
27145 - 27149
Database
ISI
SICI code
2169-9380(1997)102:A12<27145:TEPIIA>2.0.ZU;2-A
Abstract
The effective polytropic index gamma(eff) in a magnetized anisotropic plasma is obtained in the frame of one-fluid, double-adiabatic magneto hydrodynamics. The value of gamma(eff) is found to depend on the chara cteristics of the plasma flow, and on the temperature anisotropy. It i s shown that the most probable value of gamma(eff) is 1.4-1.9 at the b ow shock, and it may be less than unity in the magnetopause region.