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Modulational instability of two transverse waves in a cold plasma

Published online by Cambridge University Press:  13 March 2009

K. P. Das  and
S. Sihi
K. P. Das
Affiliation:
Department of Mathematics, University of Kalyani, Kalyani, West Bengal, India
S. Sihi
Affiliation:
Department of Mathematics, University of Kalyani, Kalyani, West Bengal, India
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Abstract

By Whitham's method of averaged Lagrangian developed by Dysthe, two coupled nonlinear Schrödiriger equations are obtained for the evolution of the amplitude of two plane polarized transverse waves in a cold plasma, both propagating in the same direction. Relativistic corrections are included and amplitude-dependent frequency shifts are derived. It is found that two transverse waves are modulationally unstable. The relativistic terms play an important part in this instability.

Type
Research Article
Information
Journal of Plasma Physics , Volume 21 , Issue 1 , February 1979 , pp. 183 - 191
Copyright
Copyright © Cambridge University Press 1979

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References

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