Measurements of thermal transport in plasmas produced by picosecond laser pulses

Year: 1995

Authors: Gizzi LA., Mackinnon AJ., Riley D., Viana SM,. Willi O.

Autors Affiliation: Univ London imperial Coll Sci Technol & Med, Blackett Lab, Price Consort Rd, London, England

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 10(16) W/cm(2), 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.


Volume: 13 (4)      Pages from: 511  to: 524

KeyWords: mass-ablation rate; magnetic-fields; dependence; generation; targets
DOI: 10.1017/S0263034600009654

Citations: 12
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