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Nonlinear generation of electromagnetic waves in a magnetoplasma

Published online by Cambridge University Press:  13 March 2009

G. Murtaza  and
P. K. Shukla
G. Murtaza
Affiliation:
Institut für Theoretische Physik, Ruhr-Universität Bochum, 4630 Bochum 1, Federal Republic of Germany
P. K. Shukla
Affiliation:
Institut für Theoretische Physik, Ruhr-Universität Bochum, 4630 Bochum 1, Federal Republic of Germany
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Abstract

It is shown that a finite-amplitude upper-hybrid wave can decay into a perpendicularly (to an external magnetic field B0zˇ) propagating electrostatic lower-hybrid/ion-cyclotron wave and a left-handed circularly polarized (LHCP) electromagnetic wave (along B0) or an ordinary mode radiation (across B0). Nonlinear dispersion relations and the growth rates are obtained. It is suggested that the present nonlinear instability can be responsible for the enhanced narrow band radiation which is frequently observed in the Earth's magnetosphere.

Type
Research Article
Information
Journal of Plasma Physics , Volume 31 , Issue 3 , June 1984 , pp. 423 - 436
Copyright
Copyright © Cambridge University Press 1984

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