Drift waves in high-beta two-temperature plasmas

Details Drift waves in high-beta two-temperature plasmas Drift waves in high-beta two-temperature plasmas

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....8911023m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Dec. 1, 1984, p. 11023-11027.

Physics

5

Collisionless Plasmas, Hydrogen Plasma, Magnetohydrodynamic Waves, Plasma Drift, Plasma Temperature, Ion Cyclotron Radiation, Magnetohydrodynamic Stability, Picosecond Pulses, Wave Dispersion

Scientific paper

The linear stability of low-frequency drift-compressional and drift-mirror modes is examined in two-component (hot and cold) plasmas. A full-beta dispersion relation is derived that retains finite temperature effects for the cold component. The effect of a nonzero ratio Tc/Th is examined, and the critical value of this parameter (that produces stabilization of the modes) is determined. The main result of this work shows that very small temperature ratios (Tc/Th less than 1 percent, in some cases) are sufficient to completely stabilize these modes at certain wave numbers.

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