Scientific Results

Experiment on laser interaction with a planar target for conditions relevant to shock ignition

Year: 2014

Authors: Maheut Y., Antonelli L., Atzeni S., Badziak J., Baffigi F., Batani D., Cecchetti C., Chodukowski T., Consoli F., Cristoforetti G., De Angelis R., Folpini G., Gizzi LA., Kalinowska Z., Kucharik M., Koester P., Krousky E., Labate L., Levato T., Liska R., Malka G., Marocchino A., Nicolai P., O’Dell T., Parys P., Pisarczyk T., Rączka P., Renner O., Rhee YJ., Ribeyre X., Richetta M., Rosinski M., Ryć L., Skala J., Schiavi A., Schurtz G., Smid M., Spindloe C., Ullschmied J., Wolowski J., Zaraś A.

Autors Affiliation: Université de Bordeaux, CNRS, UMR 5107, F-33405 Talence, France; University of Rome Tor Vergata, Roma, Italy; Dipartimento SBAI, University of Rome la Sapienza, CNISM, Rome, Italy; Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland; Intense Laser Irradiation Laboratory, INOCNR, Pisa, Italy; Associazione ENEA-Euratom sulla Fusione, Frascati, Italy; University of Milano-Bicocca, Milan, Italy; Czech Technical University, FNSPE, Prague, Czech Republic; Institute of Physics, Prague, Czech Republic; Scitech Precision, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, United Kingdom; Nuclear Data Center, KAERI, South Korea; Institute of Plasma Physics ASCR, Prague, Czech Republic

Abstract: We report the experiment conducted on the Prague Asterix Laser System (PALS) laser facility dedicated to make a parametric study of the laser-plasma interaction under the physical conditions corresponding to shock ignition thermonuclear fusion reactions. Two laser beams have been used: the auxiliary beam, for preplasma creation on the surface of a plastic foil, and the main beam to launch a strong shock. The ablation pressure is inferred from the volume of the crater in the Cu layer situated behind the plastic foil and by shock breakout chronometry. The population of fast electrons is analyzed by K alpha emission spectroscopy and imaging. The preplasma is characterized by three-frame interferometry, x-ray spectroscopy and ion diagnostics. The numerical simulations constrained with the measured data gave a maximum pressure in the plastic layer of about 90 Mbar.

Journal/Review: PHYSICA SCRIPTA

Volume: T161      Pages from: 014017  to: 014017

More Information: The authors acknowledge financial support from the LASERLAB-EUROPE to Research Infrastructure activity within the EC\’s 7th FP (GA number 284464), from the Czech Ministry MSMT under the grant number LM2010014, from the National Centre for Science (NCN), Poland under the grant number 2012/04/M/ST2/00452, Italian MIUR project PRIN 2009FCC9MS and Sapienza project 2012 C26A12CZH2. The work was conducted within the activities of the Working Package 10 (Fusion experiment) of the HiPER Project.
KeyWords: laser; plasma; shock ignition; hot electron; shock
DOI: 10.1088/0031-8949/2014/T161/014017

Citations: 2
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English