Parametric instabilities study in a shock ignition relevant regime

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

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

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.

Original languageEnglish
Title of host publicationDiode-Pumped High Energy and High Power Lasers; ELI
Subtitle of host publicationUltrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: The European Pathway to Laser Energy
DOIs
Publication statusPublished - 2011
Externally publishedYes
EventDiode-Pumped High Energy and High Power Lasers; ELI: Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: The European Pathway to Laser Energy - Prague, Czech Republic
Duration: 18 Apr 201120 Apr 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8080
ISSN (Print)0277-786X

Conference

ConferenceDiode-Pumped High Energy and High Power Lasers; ELI: Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: The European Pathway to Laser Energy
CountryCzech Republic
CityPrague
Period18/04/201120/04/2011

Bibliographical note

Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.

Keywords

  • Inertial confinement fusion
  • Laser-plasma
  • Parametric instabilities

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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