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Laser beam filamentation in a plasma with a steep density profile

Published online by Cambridge University Press:  09 March 2009

J. Limpouch
Affiliation:
Faculty of Nuclear Science and Physical Engineering, Technical University of Prague, Prague, Czechoslovakia
G. Lonĉar
Affiliation:
Faculty of Nuclear Science and Physical Engineering, Technical University of Prague, Prague, Czechoslovakia
R. Dragila
Affiliation:
Laser Physics Centre, Research School of Physical Sciences, The Australian National University, P.O. Box 4, Canberra, ACT 2601, Australia

Abstract

A numerical analysis is presented of the electrostrictive filamentation of an electromagnetic wave in the presence of a reflected wave. Maxwell's equations are solved in the steadystate simultaneously with one fluid hydrodynamics and a simplified equation of state to obtain a self-consistent solution. The threshold for filamentation is shown to be often below the laser intensity necessary to modify the plasma density profile, however, even weak profile modification substantially affects the filamentation.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1990

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References

Andreev, A. A. et al. 1986 Kratkie soobshcheniya po fizike, No. 1, 15 (see Lebedev Institute. Reports for English translation).Google Scholar
Hora, H. 1969 Z. Phys. 226, 156.CrossRefGoogle Scholar
Kruer, W. L. 1986 in Laser Plasma Interactions III, ed. Hooper, M. B. (SUSSP Publications, Edinburgh), 79.Google Scholar
Limpouch, J. et al. 1988 Laser and Particle Beams 6, 295.CrossRefGoogle Scholar
Limpouch, J. & Dragila, R. 1989 (submitted for publication).Google Scholar
Perkins, F. W. et al. 1974 Phys. Rev. Lett. 32, 1234.CrossRefGoogle Scholar

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