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Filamentation and collapse of Langmuir waves in a weak magnetic field

Published online by Cambridge University Press:  13 March 2009

P. Rolland  and
S. G. Tagare
P. Rolland
Affiliation:
Association Euratom-Cea, Département de Recherches sur la Fusion Contrôlée, Service IGn – Centre d'Etudes Nucléaires, 86 X-38041 Grenoble Cedex, France
S. G. Tagare
Affiliation:
School of Mathematics, University of Hyderabad, Golden Threshold, Hyderabad 600001, India
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Abstract

The filamentation and collapse of Langmuir waves in a weak magnetic field are analysed in two particular cases of low-frequency acoustic perturbations: (i) adiabatic perturbations which correspond to subsonic collapse, and (ii) nonadiabatic perturbations which correspond to supersonic collapse. Here the existence of Langmuir filaments and Langmuir collapse in a weak magnetic field are due to nonlinear interaction of high-frequency Langmuir waves (which make small angle with the external magnetic field) with low-frequency acoustic perturbations along the magnetic field.

Type
Research Article
Information
Journal of Plasma Physics , Volume 28 , Issue 1 , August 1982 , pp. 19 - 36
Copyright
Copyright © Cambridge University Press 1982

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