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Proceedings Paper

Physics of shock-wave generation by laser plasma in water confinement regime
Author(s): Laurent Berthe; Arnault Sollier; Patrice Peyre; Christelle Carboni; Eric Bartnicki; Remy Fabbro
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Paper Abstract

The laser interaction in water confinement regime has been studied experimentally by reflectivity and ablated thickness measurements with a 3 ns squared laser pulse and 15 Gaussian laser pulse at 1.064 micrometer. Depending on laser pulse duration, the absorption of the confined plasma is 80 - 90%. The ablated thickness equals to 1.1 micrometer and 0.75 micrometer, for the 3 ns squared pulse at 20 GW/cm2 and the 15 ns Gaussian pulses at 1 GW/cm2 respectively. The plasma parameters have been evaluated from experimental results and new developments of the description of the confined interaction. The density range of heavy particles is 3.4 - 4.6 1021 cm-3, the degree of ionization 0.39 - 1.3, the temperature 1.7 - 4.0 eV. Numerical results agree with previous experimental results. The range of coupling parameter of these confined plasmas, which is 0.2 - 1, allows to classify them in strongly coupled plasmas.

Paper Details

Date Published: 16 August 2000
PDF: 10 pages
Proc. SPIE 4065, High-Power Laser Ablation III, (16 August 2000); doi: 10.1117/12.407374
Show Author Affiliations
Laurent Berthe, Cooperation Laser-Franco Allemande (France)
Arnault Sollier, Cooperation Laser-Franco Allemande (France)
Patrice Peyre, Cooperation Laser-Franco Allemande (France)
Christelle Carboni, Cooperation Laser-Franco Allemande (France)
Eric Bartnicki, Cooperation Laser-Franco Allemande (France)
Remy Fabbro, Cooperation Laser-Franco Allemande (France)

Published in SPIE Proceedings Vol. 4065:
High-Power Laser Ablation III
Claude R. Phipps, Editor(s)

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