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Measurements of thermal transport in plasmas produced by picosecond laser pulses

Published online by Cambridge University Press:  09 March 2009

L.A. Gizzi ,
A.J. Mackinnon ,
D. Riley ,
S.M. Viana  and
O. Willi
L.A. Gizzi
Affiliation:
The Blackett Laboratory, Imperial College of Science, Technology and Medicine, Prince Consort Road, London, SW7 2BZ, England
A.J. Mackinnon
Affiliation:
The Blackett Laboratory, Imperial College of Science, Technology and Medicine, Prince Consort Road, London, SW7 2BZ, England
D. Riley
Affiliation:
The Blackett Laboratory, Imperial College of Science, Technology and Medicine, Prince Consort Road, London, SW7 2BZ, England
S.M. Viana
Affiliation:
The Blackett Laboratory, Imperial College of Science, Technology and Medicine, Prince Consort Road, London, SW7 2BZ, England
O. Willi
Affiliation:
The Blackett Laboratory, Imperial College of Science, Technology and Medicine, Prince Consort Road, London, SW7 2BZ, England
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Abstract

In this paper we present measurements of energy transport in hot, high-density plasmas produced by picosecond laser interaction with solid targets. The propagation of the ablative heat wave was studied by using X-ray-ultraviolet (XUV) spectroscopy with picosecond temporal resolution. Measurements show that for laser intensities on target above 1016 W/cm2, strong inhibition of heat flux toward the cold target occurs. A detailed modelling of the experimental data is presented in which heat transport and absorption processes are taken into account self-consistently. Finally the role played by lateral transport and self-induced magnetic fields in our experiment is also discussed.

Type
Research Article
Information
Laser and Particle Beams , Volume 13 , Issue 4 , December 1995 , pp. 511 - 524
Copyright
Copyright © Cambridge University Press 1995

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