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We studied the interaction of a double-spot laser beam with targets using the Prague Asterix Laser System (PALS) iodine laser working at 0.44 μm wavelength and intensity of about 1015 W/cm2. Shock breakout signals were recorder using time-resolved self-emission from target rear side of irradiated targets. We compared the behavior of pure Al targets and of targets with a foam layer on the laser side. Results have been simulated using hydrodynamic numerical codes.
Institute for Geothermal Researches of Dagestan Scientific Center of Russian Academy of Sciences, 30A Shamilya Pr., 367030, Makhachkala, Russia, Tel.: +7 928 560 3898
Institute of Plasma Physics and Laser Microfusion, 23 Hery Str., 01-497 Warsaw, Poland and University Bordeaux, CEA, CNRS, CELIA (Centre Laser Intense at Applications), UMR 5107, F-33405 Talence, France
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