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Three-dimensional stability of solitary shear kinetic Alfvén waves in a low-beta plasma

Published online by Cambridge University Press:  13 March 2009

K. P. Das ,
L. P. J. Kamp  and
F. W. Sluijter
K. P. Das
Affiliation:
Department of Physics, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
L. P. J. Kamp
Affiliation:
Department of Physics, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
F. W. Sluijter
Affiliation:
Department of Physics, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
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Abstract

The three-dimensional stability of solitary shear kinetic Alfvén waves in a low-β plasma is investigated by the method of Zakharov & Rubenchik (1974). It is found that there is no instability if the direction of perturbation falls within a certain region of space. The growth rate of the instability for the unstable region is determined. This growth rate is found to decrease with increasing angle between the direction of propagation of the solitary wave and the direction of the external uniform magnetic field. A particular case of the present analysis gives results on the stability of ion-acoustic solitons in a magnetized plasma.

Type
Research Article
Information
Journal of Plasma Physics , Volume 41 , Issue 1 , February 1989 , pp. 171 - 184
Copyright
Copyright © Cambridge University Press 1989

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