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Quasilinear dynamics of ion cyclotron instability in an anisotropic plasma

Published online by Cambridge University Press:  13 March 2009

J. Preinhaelter
Affiliation:
Institute of Plasma Physics, Czochoslovak Academy of Sciences, Nademýnská 600, Prague 9, Czechoslovakia
J. Václavík
Affiliation:
Institute of Plasma Physics, Czochoslovak Academy of Sciences, Nademýnská 600, Prague 9, Czechoslovakia

Abstract

It is shown that in a dense magnetoactive plasma c/cA ≫ 1 with cold electrons and ions with an anisotropic temperature the ion cyclotron waves propagating along the magnetostatic field are excited with a maximum increment. The dynamics of the quasilinear stage of this instability is investigated. It turns out that, at any moment, the ion distribution function is of the form of a step with the steep front. The speed of the front in the velocity space and the characteristic time of the relaxation process are found. It is ascertained that the distribution function arising in the course of the relaxation is stable with respect to the ion cyclotron waves propagating obliquely to the magnetostatic field.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1970

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References

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