Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-30T15:37:32.750Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of self-focusing on parametric back-scattering and absorptive instabilities in a plasma

Published online by Cambridge University Press:  13 March 2009

M. S. Sodha ,
S. C. Kaushik  and
R. P. Sharma
M. S. Sodha
Affiliation:
Department of Electrical Engineering, Drexel University, Philadelphia 19104, U.S.A.
S. C. Kaushik
Affiliation:
Physics Department, Indian Institute of Technology, New Delhi-110029, India
R. P. Sharma
Affiliation:
Physics Department, Indian Institute of Technology, New Delhi-110029, India
Get access Rights & Permissions [Opens in a new window]

Abstract

This paper presents an investigation of the effect of self-focusing on the absolute growth rates of parametric back-scattering (e.g. stimulated Raman and Brillouin scatterings) and absorptive instabilities (e.g. two-plasmon decay and ion–plasmon decay) in a homogeneous and collisionless plasma. Gaussian intensity distribution of the pump laser beam causes the redistribution of carriers in the plane transverse to the beam propagation on account of the ponderomotive force, and leads the beam to propagate in an oscillatory wave guide mode. The modifications in plasma frequency and intensity of the beam cause the growth rates of the above parametric instabilities to show an oscillatory behaviour with the distance of propagation.

Type
Research Article
Information
Journal of Plasma Physics , Volume 18 , Issue 3 , December 1977 , pp. 551 - 561
Copyright
Copyright © Cambridge University Press 1977

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Akhmanov, S. A., Sukhorukov, A. P. & Khokhlov, R. V. 1968 Soviet Phys. Uspekhi 10, 609.Google Scholar
Bornatici, M., 1975, J. Plasma Phys., 14, 105.Google Scholar
Brueckner, K. A. & Jorna, S., 1974, Rev. Mod. Phys. 46, 325.Google Scholar
Drake, J. F., Kaw, P. K., Lee, Y. C., Schmidt, G., Liu, C. S. & Rosenbluth, M. N., 1974 Phys. Fluids, 17, 778.Google Scholar
Eremin, B. G., Litvak, A. G., & Poluyakhatov, B. K., 1972. Isv. VVz. Radio Fizika, 15, 1132.Google Scholar
Forslund, D. W., Kindel, J. M., & Lindman, E. L., 1975, Phys. Fluids, 18, 1002 and 1017.CrossRefGoogle Scholar
Jorna, S., 1974Google Scholar
Kidder, R. E., 1973, Fundamental and Applied Laser Physics (Ed. Feld, M. S., Javan, A. and Jurnit, N. A.), p. 107. Wiley.Google Scholar
Lee, P., Giovanielli, D. V., Godwin, R. P. & McCall, G. H., 1974, Appl. Phys. Lett. 24, 406.Google Scholar
Liu, C. S., Rosenbluth, M. N., & White, R. B., 1974, Phys. Fluids, 17, 1211.Google Scholar
Manheimer, W. M., & Ott, E., 1974, Phys. Fluides, 17, 1413.Google Scholar
Max, C. E., Arons, J., & Langdon, A. B., 1974 Phys. Rev. Lett. 33, 209.CrossRefGoogle Scholar
Nishikawa, K., 1968, J. Phys. Soc. Japan, 24, 916 and 1152.CrossRefGoogle Scholar
Ott, E., Manheimer, M. W., & Klein, H. H., 1974 Phys. Fluids, 17, 1757.Google Scholar
Porkolab, M., 1976, Physica C 82, 86.Google Scholar
Sodha, M. S., Ghatak, A. K., & Tripathi, V. K., 1974, Self-focusing of Laser Beams in Dielectrics, Plasmas and Semiconductors. Tata McGraw-Hill, New Delhi.Google Scholar
Sodha, M. S., Ghatak, A. K., & Tripathi, V. K., 1976, Progress in Optics, vol. 13, p. 169. North Holland.Google Scholar
Sodha, M. S., Sharma, R. P., & Kaushik, S. C., 1975, J. Appl. Phys. 46, 4697.Google Scholar
Sodha, M. S., Sharma, R. P., & Kaushik, S. C., 1976 a, Plasma Phys. 18, 879.Google Scholar
Sodha, M. S., Sharma, R. P., & Kaushik, S. C., 1976 b J. Appl. Phys. 47, 3518.Google Scholar
Tomljanovich, N. M., 1975, Phys. Fluids, 18, 741.Google Scholar