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High-frequency ion electrostatic instabilities in mixed warm–cold plasma

Published online by Cambridge University Press:  13 March 2009

L. Gomberoff  and
S. Cuperman
L. Gomberoff
Affiliation:
Department of Physics and Astronomy, Tel-Aviv University, Ramat-Aviv, Israel
S. Cuperman
Affiliation:
Department of Physics and Astronomy, Tel-Aviv University, Ramat-Aviv, Israel
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Abstract

It is shown that an ion loss cone distribution function with m ≥ 1 becomes unstable against electrostatic waves with ω ≫ Ωp and k0 = 0 in the presence of a cold plasma population, in contrast with pure warm systems, which require m ≥ 3 for instability. This result is an extension to high frequencies, ω ≫ Ω of similar conclusions reached by Pearlstein et al. (1966) and Farr & Budwine (1968), for ω-values equal to the first few harmonics of the proton gyrofrequency.

Type
Research Article
Information
Journal of Plasma Physics , Volume 15 , Issue 3 , June 1976 , pp. 325 - 333
Copyright
Copyright © Cambridge University Press 1976

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References

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