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Numerical simulation of the X-ray energetics in spherical plasmas

Published online by Cambridge University Press:  09 March 2009

J. P. Dinguirard ,
D. Mostacci ,
J. Briand ,
A. Gomes ,
J. C. Kieffer ,
Y. Quemener ,
C. Arnas ,
L. Berge  and
M. Armengaud
J. P. Dinguirard
Affiliation:
C.P.A.T.–G.I.L.M.T., Univ. P. Sabatier. CNRS-U.A. 277. 118 route de Narbonne, 31062, Toulouse-Cedex, France
D. Mostacci
Affiliation:
C.P.A.T.–G.I.L.M.T., Univ. P. Sabatier. CNRS-U.A. 277. 118 route de Narbonne, 31062, Toulouse-Cedex, France
J. Briand
Affiliation:
C.P.A.T.–G.I.L.M.T., Univ. P. Sabatier. CNRS-U.A. 277. 118 route de Narbonne, 31062, Toulouse-Cedex, France
A. Gomes
Affiliation:
C.P.A.T.–G.I.L.M.T., Univ. P. Sabatier. CNRS-U.A. 277. 118 route de Narbonne, 31062, Toulouse-Cedex, France
J. C. Kieffer
Affiliation:
C.P.A.T.–G.I.L.M.T., Univ. P. Sabatier. CNRS-U.A. 277. 118 route de Narbonne, 31062, Toulouse-Cedex, France
Y. Quemener
Affiliation:
C.P.A.T.–G.I.L.M.T., Univ. P. Sabatier. CNRS-U.A. 277. 118 route de Narbonne, 31062, Toulouse-Cedex, France
C. Arnas
Affiliation:
C.P.A.T.–G.I.L.M.T., Univ. P. Sabatier. CNRS-U.A. 277. 118 route de Narbonne, 31062, Toulouse-Cedex, France
L. Berge
Affiliation:
C.P.A.T.–G.I.L.M.T., Univ. P. Sabatier. CNRS-U.A. 277. 118 route de Narbonne, 31062, Toulouse-Cedex, France
M. Armengaud
Affiliation:
C.P.A.T.–G.I.L.M.T., Univ. P. Sabatier. CNRS-U.A. 277. 118 route de Narbonne, 31062, Toulouse-Cedex, France
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Abstract

1-D computer simulations have been performed to study the influence of X-rays preheating on the compression of spherical laser-produced plasmas. The targets are glass microballoons filled with Neon at the initial pressure 10 bars. It is assumed that the only significant absorption process in the Neon is by inverse bremsstrahlung absorption. The results indicate that the radiative preheating energy has a nonnegligible effect on the compression, and a study of the Lawson criterion shows that this effect is more important for high-Z target shell materials and for thicker shells.

Type
Research Article
Information
Laser and Particle Beams , Volume 6 , Issue 2 , May 1988 , pp. 343 - 351
Copyright
Copyright © Cambridge University Press 1988

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