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Raman gain against a background of non-thermal ion fluctuations in a plasma

Barr, H C, Boyd, T J M and Lukyanov, A V (2000) Raman gain against a background of non-thermal ion fluctuations in a plasma. Journal of Plasma Physics. pp. 623-630. ISSN 1469-7807

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Abstract

A complex stimulated Raman scattering event against a background of non-thermal ion acoustic waves in an inhomogeneous plasma is described. We obtain analytic forms for the Raman gain due to a five-wave interaction consisting of conventional three-wave Raman scattering followed by the decay of the Raman Langmuir wave into a second Langmuir wave (or a second scattered light wave) and an ion acoustic wave. Very modest levels of ion waves produce a. significant effect on Raman convective gain. A combination of plasma inhomogeneity and suprathermal ion fluctuations may offer a means for the control of Raman gain.

Item Type: Article
Copyright, Publisher and Additional Information: © 2000 Cambridge University Press.
Keywords: STIMULATED BRILLOUIN-SCATTERING, LANGMUIR DECAY INSTABILITY, LASER-PRODUCED PLASMA, ACOUSTIC-WAVES, ELECTRON-PLASMA
Institution: The University of York
Academic Units: The University of York > Physics (York)
Depositing User: Repository Officer
Date Deposited: 11 Oct 2005
Last Modified: 16 Oct 2014 17:15
Status: Published
Refereed: Yes
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/735

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