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Nonlinear stage in the development of hydrodynamic instability in laser targets

Published online by Cambridge University Press:  09 March 2009

E. G. Gamaly ,
A. P. Favorsky ,
A. O. Fedyanin ,
I. G. Lebo ,
E. E. Myshetskaya ,
V. B. Rozanov  and
V. F. Tishkin
E. G. Gamaly
Affiliation:
Lebedev Physics Institute, Academy of Science of the USSR, Moscow 117924
A. P. Favorsky
Affiliation:
Keldysh Institute of Applied Mathematics, Academy of Science of the USSR, Moscow 125047
A. O. Fedyanin
Affiliation:
Keldysh Institute of Applied Mathematics, Academy of Science of the USSR, Moscow 125047
I. G. Lebo
Affiliation:
Lebedev Physics Institute, Academy of Science of the USSR, Moscow 117924
E. E. Myshetskaya
Affiliation:
Keldysh Institute of Applied Mathematics, Academy of Science of the USSR, Moscow 125047
V. B. Rozanov
Affiliation:
Lebedev Physics Institute, Academy of Science of the USSR, Moscow 117924
V. F. Tishkin
Affiliation:
Keldysh Institute of Applied Mathematics, Academy of Science of the USSR, Moscow 125047
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Abstract

The development of hydrodynamic instability in laser targets is studied by means of the 2D numerical code “ATLANT.” At the linear stage, perturbations grow as At the nonlinear stage, the growth rate of Rayleigh-Taylor instability is reduced and new harmonics are generated. The effect of the nonuniformity of laser irradiation has been investigated for long- and shortwave perturbations. The growth rate of short-wave perturbations may be effectively decreased by means of symmetrical prepulses.

Type
Research Article
Information
Laser and Particle Beams , Volume 8 , Issue 3 , September 1990 , pp. 399 - 407
Copyright
Copyright © Cambridge University Press 1990

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