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Scattering of electromagnetic waves by anomalous fluctuations of a magnetized plasma

Published online by Cambridge University Press:  13 March 2009

V. N. Pavlenko  and
V. G. Panchenko
V. N. Pavlenko
Affiliation:
Institute for Nuclear Research of the Ukrainian Academy of Sciences, U.S.S.R. SU-252028, Kiev-28, Prospekt Nauki, 47
V. G. Panchenko
Affiliation:
Institute for Nuclear Research of the Ukrainian Academy of Sciences, U.S.S.R. SU-252028, Kiev-28, Prospekt Nauki, 47
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Abstract

Fluctuations and scattering of transverse electromagnetic waves by density fluctuations in a magnetized plasma in the presence of parametric decay of the pump wave are investigated. The spectral density of electron-density fluctuations is calculated. It is shown that the differential scattering cross-section has sharp maxima at the ion-acoustic and lower-hybrid frequencies when parametric decay of the lower-hybrid pump wave occurs. We note that scattering at the ion-acoustic frequency is dominant. When the pump-wave amplitude tends to the threshold strength of the electric field the scattering cross-section increases anomalously, i.e. there is critical opalescence.

Type
Research Article
Information
Journal of Plasma Physics , Volume 43 , Issue 2 , April 1990 , pp. 165 - 172
Copyright
Copyright © Cambridge University Press 1990

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