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Competition between the stimulated Raman and Brillouin scattering under the strong damping condition

Published online by Cambridge University Press:  27 March 2013

L. Hao ,
Z. J. Liu ,
X. Y. Hu  and
C. Y. Zheng
L. Hao*
Affiliation:
Institute of Applied Physics and Computational Mathematics, Beijing, 100094, China
Z. J. Liu
Affiliation:
Institute of Applied Physics and Computational Mathematics, Beijing, 100094, China
X. Y. Hu
Affiliation:
Institute of Applied Physics and Computational Mathematics, Beijing, 100094, China
C. Y. Zheng
Affiliation:
Institute of Applied Physics and Computational Mathematics, Beijing, 100094, China Center for Applied Physics and Technology, Peking University, Beijing, 100871, China
*
Address correspondence and reprint requests to: Liang Hao, Institute of Applied Physics and Computational Mathematics Beijing, BeijingChina. E-mail: hao_liang@iapcm.ac.cn
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Abstract

In this paper, we discuss the competition between the stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS) instabilities under the strong damping condition. Based on a five-wave interaction model, relations of the stationary backscattering reflectivity between SRS and SBS are deduced in the case of homogeneous plasmas. Developments of the two coexistent instabilities are simulated with different parameters. The density and the temperature of plasma are found to be important in determining which instability dominates the backscattering in the regime of competition. Furthermore, the influence of inhomogeneous condition to the pattern of competition is analyzed. Numerical results consist with our theoretical results.

Keywords

BackscatteringFive-wave interaction modelStimulated Brillouin scatteringStimulated Raman scattering
Type
Research Article
Information
Laser and Particle Beams , Volume 31 , Issue 2 , June 2013 , pp. 203 - 209
Copyright
Copyright © Cambridge University Press 2013 

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References

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