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Non-uniform illumination of laser targets

Published online by Cambridge University Press:  09 March 2009

R. G. Evans
R. G. Evans
Affiliation:
Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, Great Britain
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Abstract

Attempts to accelerate and implode laser targets are hindered by the non-uniformities present in real laser beams. The effects of non-uniform illumination are ‘smoothed’ by thermal transport in the low density ablation plasma but amplified by the fluid instabilities (Rayleigh–Taylor) present in the high density accelerated material. In this paper the effects of different assumptions concerning the plasma thermal conductivity are analysed and the inclusion of the full fluid equations is shown to introduce oscillatory (acoustic) and growing (Rayleigh–Taylor) phenomena into the fluid response.

Type
Research Article
Information
Laser and Particle Beams , Volume 3 , Issue 3 , August 1985 , pp. 273 - 281
Copyright
Copyright © Cambridge University Press 1985

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