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Effect of finite ion Larmor radius on the Kelvin–Helmholtz instability

Published online by Cambridge University Press:  13 March 2009

Hirosh Nagano
Hirosh Nagano
Affiliation:
Department of Physics, Gifu College of Dentistry, Gifu, Japan
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Abstract

The effect of finite ion Larmor radius on the Kelvin–Helmholtz instability is investigated in the cases of an incompressible and a compressible plasma. When a wave vector is perpendicular to a uniform magnetic field, the effect of finite Larmor radius (FLR) stabilizes perturbations with a wavenumber exceeding a critical value, while there exists another case that the FLR effect destabilizes still more than the usual MHD approximation. The difference between these cases is decided from the configuration of flow velocity and magnetic field. When a wave vector is parallel to a magnetic field, the FLR effect tends to stabilize perturbations with a larger wavenumber.

Type
Research Article
Information
Journal of Plasma Physics , Volume 20 , Issue 2 , October 1978 , pp. 149 - 160
Copyright
Copyright © Cambridge University Press 1978

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