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Effect of thermal anisotrophy on the loss-cone produced high-frequency quasi-electrostatic ion cyclotron waves in mixed warm-cold plasmas

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

We show that in the case of generalized loss-cone distribution functions characterized by loss-cone index l, parallel thermal velocity α∥ and perpendicular spread α⊥ sufficiently large anisotropy, (α∥/α⊥), may stabilize the high-frequency electrostatic ion cyclotron instability. The discussion refers to the oblique propagation and includes also a second, cold, ion component (besides warm isotropic electrons). Electromagnetic corrections to the quasi-electrostatic dispersion relation are also considered. Simple analytical expressions for the growth rates are derived and discussed.

Type
Research Article
Information
Journal of Plasma Physics , Volume 25 , Issue 1 , February 1981 , pp. 103 - 109
Copyright
Copyright © Cambridge University Press 1981

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References

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