Share Email Print
cover

Proceedings Paper

Parametric instabilities study in a shock ignition relevant regime
Author(s): C. A. Cecchetti; A. Giulietti; P. Koester; L. Labate; T. Levato; L. A. Gizzi; L. Antonelli; A. Patria; D. Batani; M. Kozlová; D. Margarone; J. Nejdl; B. Rus; M. Sawicka; M. Lafon; X. Ribeyre; G. Schurtz
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Inertial Confinement Fusion with Shock Ignition relies on a very strong shock created by a laser pulse at an intensity of the order of 1016W/cm2. In this context, an experimental campaign at the Prague Asterix Laser System (PALS) has been carried out within the frame of the HiPER project. Two beams have been used, the first to create an extended preformed plasma (scale length of the order of hundreds of micrometers) on a planar target, the second to generate a strong shock wave. Different diagnostics were used to study both the shock breakout at the rear surface of the target and the laserplasma coupling and parametric instabilities. This paper is focused on back-scattering analysis to measure the backreflected energy and to characterize parametric instabilities such as stimulated Brillouin and Raman scattering. Our experimental data show that parametric instabilities do not play a strong role in the laser plasma coupling. Moreover, preliminary analysis of the back reflected light from the interaction region shows that less than 5% of the total incident laser energy was back-reflected, with only a small fraction of that light was originating from parametric instabilities.

Paper Details

Date Published: 9 June 2011
PDF: 6 pages
Proc. SPIE 8080, Diode-Pumped High Energy and High Power Lasers; ELI: Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: the European Pathway to Laser Energy, 80802A (9 June 2011); doi: 10.1117/12.891249
Show Author Affiliations
C. A. Cecchetti, Intense Laser Irradiation Lab., INO-CNR (Italy)
Istituto Nazionale di Fisica Nucleare (Italy)
A. Giulietti, Intense Laser Irradiation Lab., INO-CNR (Italy)
P. Koester, Intense Laser Irradiation Lab., INO-CNR (Italy)
Istituto Nazionale di Fisica Nucleare (Italy)
L. Labate, Intense Laser Irradiation Lab., INO-CNR (Italy)
Istituto Nazionale di Fisica Nucleare (Italy)
T. Levato, Intense Laser Irradiation Lab., INO-CNR (Italy)
L. A. Gizzi, Intense Laser Irradiation Lab., INO-CNR (Italy)
Istituto Nazionale di Fisica Nucleare (Italy)
L. Antonelli, Univ. degli Studi di Milano-Bicocca (Italy)
A. Patria, Univ. degli Studi di Milano-Bicocca (Italy)
D. Batani, Univ. degli Studi di Milano-Bicocca (Italy)
INO-CNR (Italy)
M. Kozlová, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
D. Margarone, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
J. Nejdl, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
B. Rus, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
M. Sawicka, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
M. Lafon, Ctr. Lasers Intenses et Applications, CNRS, Univ. Bordeaux 1 (France)
X. Ribeyre, Ctr. Lasers Intenses et Applications, CNRS, Univ. Bordeaux 1 (France)
G. Schurtz, Ctr. Lasers Intenses et Applications, CNRS, Univ. Bordeaux 1 (France)


Published in SPIE Proceedings Vol. 8080:
Diode-Pumped High Energy and High Power Lasers; ELI: Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: the European Pathway to Laser Energy
Luis O. Silva; Georg Korn; Leonida Antonio Gizzi; Chris Edwards; Joachim Hein, Editor(s)

© SPIE. Terms of Use
Back to Top