High Power Laser Science and Engineering, 2021, 9 (1): 010000e3, Published Online: Feb. 8, 2021   

Reflecting laser-driven shocks in diamond in the megabar pressure range Download: 1102次

Author Affiliations
1 IPPLM Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland
2 CNRS, CEA, CELIA, Universite de Bordeaux, Talence, France
3 Donostia International Physics Center (DIPC), Donostia-San Sebastian, Basque Country, Spain
4 Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milano, Italy
5 Fisika Aplikatua 1 Saila, Ingeniaritza Eskola, University of the Basque Country (UPV/EHU), Basque Country, Spain & Centro de Física de Materiales (CSIC-UPV/EHU), Donostia/San Sebastian, Basque Country, Spain
6 Department of Plasma Physics, National Research Nuclear University MEPhI, Moscow, Russia
7 Joint Institute for High Temperature RAS, Moscow, Russia
8 GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
9 Dipartimento di Ingegneria Industriale, Università degli studi di Roma “Tor Vergata”, Roma, Italy
10 Institute for Microelectronics and Microsystems - CNR, Roma, Italy
11 IGRRE - Joint Institute for High Temperatures RAS, Makhachkala, Russia
12 Department of Physics “G. Occhialini”, University of Milano-Bicocca, Milano, Italy
Abstract
In this work we present experimental results on the behavior of diamond at megabar pressure. The experiment was performed using the PHELIX facility at GSI in Germany to launch a planar shock into solid multi-layered diamond samples. The target design allows shock velocity in diamond and in two metal layers to be measured as well as the free surface velocity after shock breakout. As diagnostics, we used two velocity interferometry systems for any reflector (VISARs). Our measurements show that for the pressures obtained in diamond (between 3 and 9 Mbar), the propagation of the shock induces a reflecting state of the material. Finally, the experimental results are compared with hydrodynamical simulations in which we used different equations of state, showing compatibility with dedicated SESAME tables for diamond.

K. Jakubowska, D. Mancelli, R. Benocci, J. Trela, I. Errea, A. S. Martynenko, P. Neumayer, O. Rosmej, B. Borm, A. Molineri, C. Verona, D. Cannatà, A. Aliverdiev, H. E. Roman, D. Batani. Reflecting laser-driven shocks in diamond in the megabar pressure range[J]. High Power Laser Science and Engineering, 2021, 9(1): 010000e3.

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