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Frequency spectra of the Raman-backscattered light in an inhomogeneous plasma

Published online by Cambridge University Press:  09 March 2009

Guy Bonnaud ,
Denis Pesme  and
René Pellat
Guy Bonnaud
Affiliation:
CEA, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve St. Georges, France
Denis Pesme
Affiliation:
CEA, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve St. Georges, France
René Pellat
Affiliation:
Centre de Physique Théorique, Ecole Polytechnique, 91128 Palaiseau, France
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Abstract

The behavior of the stimulated Raman scattering is investigated in a laser-irradiated plasma with an inhomogeneous density profile, by means of wave-coupling simulations. In the case of a regular hydrodynamic-like profile, a spectral broadening is observed when the laser irradiance is increased and is found to result from a coupling between the convective and the absolute Raman scattering, via pump depletion. In the case where a short-scale modulation of the density is superimposed on the profile, the spectrum is strongly influenced by the propagation velocity of the modulation and by the sinusoidal/chaotic nature of the modulation.

Type
Research Article
Information
Laser and Particle Beams , Volume 9 , Issue 2 , June 1991 , pp. 477 - 492
Copyright
Copyright © Cambridge University Press 1991

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References

REFERENCES

Bonnaud, G. 1987 Plasma Phys. Controlled Fusion 29, 573.CrossRefGoogle Scholar
Bonnaud, G. 1989a CEA Report No. R–5477 (in French).Google Scholar
Bonnaud, G. 1989b State Doctorate Thesis, Paris XI University (in French).Google Scholar
Bonnaud, G. & Pesme, D. 1989 In Laser Plasma Interaction and Related Phenomena, edited by Hora, H. & Miley, G. (Plenum, New York), Vol. 8, p. 375.Google Scholar
Bonnaud, G., Pesme, D. & Pellat, R.1989 Phys. Rev. Lett. (submitted).Google Scholar
Dawson, J. M., Kruer, W. L. & Rosen, B. 1973 In Dynamics of Ionized Gases, edited by Lighthill, M., Imai, I. & Sato, H. (University of Tokyo Press, Tokyo), p. 73.Google Scholar
Drake, J. F. & Lee, Y. C. 1973 Phys. Rev. Lett. 31, 1197.CrossRefGoogle Scholar
Drake, R. P. et al. 1988 Phys. Rev. Lett. 60, 1018.Google Scholar
Karttunen, S. J. 1981 Phys. Rev. A 23, 2006.CrossRefGoogle Scholar
Kaw, P. K., Lin, A. T. & Dawson, J. M. 1973 Phys. Fluids 16, 1967.Google Scholar
Laval, G., Pellat, R. & Pesme, D. 1976 Phys. Rev. Lett. 36, 193.Google Scholar
Lee, Y. C. & Kaw, P. K. 1974 Phys. Rev. Lett. 32, 135.CrossRefGoogle Scholar
Nicholson, D. R. & Kaufman, A. N. 1974 Phys. Rev. Lett. 33, 1207.CrossRefGoogle Scholar
Phillion, D. W. et al. 1982 Phys. Fluids 25, 1434.CrossRefGoogle Scholar
Rosenbluth, M. N. 1972 Phys. Rev. Lett. 29, 565.CrossRefGoogle Scholar
Shepard, C. L. et al. 1986 Phys. Fluids 29, 583.Google Scholar
Tanaka, H. et al. 1982 Phys. Rev. Lett. 17, 1179.CrossRefGoogle Scholar
Williams, E. A., Albritton, J. R. & Rosenbluth, M. N. 1979 Phys. Fluids 22, 139.CrossRefGoogle Scholar