Scientific Results

Investigation of energy transfer from PALS iodine laser beam to shock wave generated in solid target relevant to shock ignition

Year: 2013

Authors: Pisarczyk T., Kalinowska Z., Badziak J., Kasperczuk A., Borodziuk S., Rosiński M., Parys P., Chodukowski T., Gus’kov S.Yu., Demchenko N. N., Batani D., Antonelli L., Koester P., Gizzi L.A., Labate L., Cristoforetti G., Baffigi F., Ullschmied J., Krouský E., Pfeifer M., Renner O., Šmíd M., Skála J., Pisarczyk P.

Autors Affiliation: Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland
P.N. Lebedev Physical Institute of RAS, 53 Leninsky Ave., 119 991 Moscow, Russia
CELIA, University Bordeaux-I, Bordeaux, France Intense Laser Irradiation Laboratory at INO-CNR, Pisa, Italy
Institute of Physics ASCR, v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic
Institute of Plasma Physics ASCR, v.v.i., Za Slovankou 3, 182 00 Prague 8, Czech Republic Warsaw University of Technology, ICS, 15/19 Nowowiejska St., 00-665 Warsaw, Poland

Abstract: The efficiency of the laser energy conversion to a shock wave has been investigated in solid targets irradiated by a single or two consecutive laser beams. The first laser pulse was used to produce the plasma simulating conditions relevant to shock ignition approach. Oneand two-layer planar targets (bulk Al and Cu alternatively covered by a thin CH layer) were used. The laser provided a 250 ps pulse within the intensity range of 1-50 PW/cm2 at the first and third harmonics with wavelengths of 1.315 and 0.438 µm, respectively. Three-frame interferometry and measurements of crater parameters were used as the main diagnostics. The contribution of fast electrons to ablation and the laser energy conversion into shock wave have been investigated for different conditions of the target irradiation, including the pre-plasma presence. 2D numerical simulations and theoretical analysis were carried out to support explanation of experimental results. Copyright

Conference title: 40th European Physical Society Conference on Plasma Physics. Finland, 1st—5th July 2013

Place: Espoo, Finland

More Information: Contributed Papers. Mulhouse: European Physical Society, 2013. ISBN 2-914771-84-3. – (Europhysics Conference Abstracts (ECA), P5.210)).
KeyWords: laser-matter interaction; plasma interferometry; shock wave generation; shock wave generation; fast electrons

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