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Nonlinear excitation of vortices at the upper-hybrid layer

Published online by Cambridge University Press:  13 March 2009

H. U. Rahman ,
M. Y. Yu  and
P. K. Shukla
H. U. Rahman
Affiliation:
Institut für Theoretische Physik, Ruhr-Universität Bochum, 4630 Bochum 1, F. R. Germany.
M. Y. Yu
Affiliation:
Institut für Theoretische Physik, Ruhr-Universität Bochum, 4630 Bochum 1, F. R. Germany.
P. K. Shukla
Affiliation:
Institut für Theoretische Physik, Ruhr-Universität Bochum, 4630 Bochum 1, F. R. Germany.
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Extract

It is shown that convective cells can be excited by large-amplitude propagating upper-hybrid waves in a plasma. Using the two-fluid model, we obtain a coupled set of differential equations. A nonlinear dispersion relation for the modulational instability is then derived. This relation is investigated for two parameter regimes and expressions for the growth rates are obtained analytically. The limiting case of a dipole pump field is also considered. The relevance of our work in laser-produced, as well as magnetically confined, plasmas is discussed.

Type
Articles
Information
Journal of Plasma Physics , Volume 25 , Issue 3 , June 1981 , pp. 509 - 514
Copyright
Copyright © Cambridge University Press 1981

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References

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