Scientific Results

Pre-plasma effect on energy transfer from laser beam to shock wave generated in solid target

Year: 2014

Authors: Pisarczyk T., Gus’kov S. Yu, Kalinowska Z., Badziak J., Batani D., Antonelli L., Folpini G., Maheut Y., Baffigi F., Borodziuk S., Chodukowski T., Cristoforetti G., Demchenko N.N., Gizzi LA., Kasperczuk A., Koester P., Krousky E., Labate L., Parys P., Pfeifer M., Renner O., Smid N., Rosinski M., Skala J., Dudzak R., Ullschmied 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; Université Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, Talence, France; Intense Laser Irradiation Laboratory at INO-CNR, Pisa, Italy; Institute of Plasma Physics ASCR, v.v.i., ZaSlovankou 3, 182 00 Prague 8, Czech Republic; Institute of Physics ASCR, v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic; Warsaw University of Technology, ICS, 15/19 Nowowiejska St., 00-665 Warsaw, Poland

Abstract: Efficiency of the laser radiation energy transport into the shock wave generated in layered planar targets (consisting of massive Cu over coated by thin CH layer) was investigated. The targets were irradiated using two laser pulses. The 1 omega pulse with the energy of similar to 50J produced a pre-plasma, imitating the corona of the pre-compressed inertial confinement fusion target. The second main pulse used the 1 omega or 3 omega laser harmonics with the energy of similar to 200J. The influence of the pre-plasma on parameters of the shock wave was determined from the crater volume measurements and from the electron density distribution measured by 3-frame interferometry. The experimental results show that the energy transport by fast electrons provides a definite contribution to the dynamics of the ablative process, to the shock wave generation, and to the ablation pressure in dependence on the target irradiation conditions. The strong influence of the pre-plastna on the investigated process was observed in the 1 omega case. Theoretical analysis supports the explanation of experimental results. (C) 2014 AIP Publishing LLC.

Journal/Review: PHYSICS OF PLASMAS

Volume: 21 (1)      Pages from: 012708  to: 012708

More Information: This work was supported in part by the Access to Research Infrastructure activity in the 7th Framework Program of the EU Contract No. 284464, Laserlab Europe III, by the Czech Republic\’s Ministry of Education. Youth and Sports under PALS RI project (No. LM2010014), by National Centre for Science (NCN), Poland under Grant No. 2012/04/M/ST2/00452 and within the HiPER project under Grant Agreement No. 211737. The participation of S. Yu. Gus\’kov and N. N. Demchenko in this work was supported by RFBR projects Nos. 14-02-00010 and 13-02-00295. The participation of O. Renner was supported by the Czech Science Foundation project No. CZ.1.07/2.3.00/20.0279 and by the ELI Project No. CZ.1.05/1.1.00/02.0061.
KeyWords: plasma; laser; shock wave; system;
DOI: 10.1063/1.4862784

Citations: 22
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