Mirror modes: Nonmaxwellian distributions

We perform direct analysis of mirror mode instabilities from the general dielectric tensor for several model distributions, in the longwavelength limit. The growth rate at the instability threshold depends on the derivative of the distribution for zero parallel energy. The maximum growth rate is alw...

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Bibliographic Details
Published in:arXiv.org 2000-09
Main Authors: Gedalin, M, Lyubarsky, Yu E, Balikhin, M, Strangeway, R J, Russell, C T
Format: Article
Language:English
Subjects:
Dependence
Distribution functions
Electron distribution
Energy distribution
Growth rate
Stability
Tensors
Online Access:Get full text
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Summary:We perform direct analysis of mirror mode instabilities from the general dielectric tensor for several model distributions, in the longwavelength limit. The growth rate at the instability threshold depends on the derivative of the distribution for zero parallel energy. The maximum growth rate is always \(\sim k_\parallel v_{T\parallel}\) and the instability is of nonresonant kind. The instability growth rate and its dependence on the propagation angle depend on the shape of the ion and electron distribution functions.
ISSN:2331-8422
DOI:10.48550/arxiv.0009040