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Proceedings Paper

Investigation of laser plasmas relevant to shock ignition at PALS
Author(s): J. Nejdl; M. Kozlová; M. Sawicka; D. Margarone; M. Krus; J. Prokupek; B. Rus; D. Batani; L. Antonelli; A. Patria; O. Ciricosta; C. Cecchetti; P. Koester; L. Labate; A. Giulietti; L. A. Gizzi; A. Moretti; M. Richetta; G. Schurtz; X. Ribeyre; M. Lafon; C. Spindloe; T. O'Dell
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Paper Abstract

We present the results of an experiment concerning laser-plasma interaction in the regime relevant to shock ignition. The interaction of high-intensity frequency tripled laser pulse with CH plasma preformed by lower intensity pre-pulse on fundamental wavelength of the kJ-class iodine laser was investigated in the planar geometry in order to estimate the coupling of the laser energy to the shock wave or parametric instabilities such as stimulated Raman or Brillouin scattering, or to the fast electrons. First the complete characterization of the hydrodynamic parameters of preformed plasma was made using crystal spectrometer to estimate the electron temperature and XUV probe to resolve the electron density profile close to the critical density region. The other part of the experiment consisted of the shock chronometry, calorimetry of the back-scattered light and hard X-ray spectrometry to evaluate the coupling to different processes. The preliminary analysis of the measurements showed rather low energy transfer of the high-intensity pulse to back-scattered light (< 5%) and no traces of any significant hot electron production were found in the X-ray spectra.

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, 80802B (9 June 2011); doi: 10.1117/12.892321
Show Author Affiliations
J. Nejdl, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Czech Technical Univ. (Czech Republic)
M. Kozlová, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
M. Sawicka, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Czech Technical Univ. (Czech Republic)
D. Margarone, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
M. Krus, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Czech Technical Univ. (Czech Republic)
J. Prokupek, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
Czech Technical Univ. (Czech Republic)
B. Rus, Institute of Physics of the ASCR, v.v.i. (Czech Republic)
D. Batani, Univ. degli Studi di Milano-Bicocca (Italy)
L. Antonelli, Univ. degli Studi di Milano-Bicocca (Italy)
A. Patria, Univ. degli Studi di Milano-Bicocca (Italy)
O. Ciricosta, Intense Laser Irradiation Lab, INO-CNR (Italy)
C. Cecchetti, Intense Laser Irradiation Lab, INO-CNR (Italy)
P. Koester, Intense Laser Irradiation Lab, INO-CNR (Italy)
L. Labate, Intense Laser Irradiation Lab, INO-CNR (Italy)
A. Giulietti, Intense Laser Irradiation Lab, INO-CNR (Italy)
L. A. Gizzi, Intense Laser Irradiation Lab, INO-CNR (Italy)
A. Moretti, Univ. degli Studi di Roma Tor Vergata (Italy)
M. Richetta, Univ. degli Studi di Roma Tor Vergata (Italy)
G. Schurtz, Ctr. Lasers Intenses et Applications, CNRS, Univ. Bordeaux 1 (France)
X. Ribeyre, Ctr. Lasers Intenses et Applications, CNRS, Univ. Bordeaux 1 (France)
M. Lafon, Ctr. Lasers Intenses et Applications, CNRS, Univ. Bordeaux 1 (France)
C. Spindloe, Rutherford Appleton Lab. (United Kingdom)
T. O'Dell, Rutherford Appleton Lab. (United Kingdom)


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; Leonida Antonio Gizzi; Joachim Hein; Georg Korn; Chris Edwards, Editor(s)

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