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 language | English |
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Title of host publication | Diode-Pumped High Energy and High Power Lasers; ELI |
Subtitle of host publication | Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: The European Pathway to Laser Energy |
DOIs | |
Publication status | Published - 2011 |
Externally published | Yes |
Event | Diode-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 2011 → 20 Apr 2011 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 8080 |
ISSN (Print) | 0277-786X |
Conference
Conference | Diode-Pumped High Energy and High Power Lasers; ELI: Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: The European Pathway to Laser Energy |
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Country | Czech Republic |
City | Prague |
Period | 18/04/2011 → 20/04/2011 |
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