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Proceedings Paper

X-ray spectroscopy and imaging of a plasma collision
Author(s): Claude J. Chenais-Popovics; Ovidiu N. Rancu; P. Renaudin; Jean-Claude J. Gauthier; F. Gilleron; O. Lindenmeyer; H. Kawagoshi; M. Dirksmoeller; Ingo Uschmann; Thomas Missalla; P. C. Sondhauss; Eckhart Foerster; Oldrich Renner; E. Krousky; Henri Pepin; O. Larroche; Olivier Peyrusse; Terry D. Shepard
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Paper Abstract

The collision of laser-produced plasmas has been diagnosed by x-ray spectroscopy and imaging. The two colliding plasmas are produced on Al thin foils at a distance of 200 to 900 micrometers irradiated at (lambda) equals 0.53 micrometers with laser intensities of 3 X 1013 to 6 X 1013 W/cm2. Interpretation of the plasmas was visualized by replacing one of the foils material by magnesium. The main diagnostics were x-ray crystal optics based on flat, cylindrical, and toroidal crystals viewing the inter-target space. A multifluid eulerian monodimensional hydrodynamic code coupled with a radiative-atomic package provided simulations of the experiments. Hydrodynamic 2D simulations calculating the lateral expansion of the plasma enabled a reliable treatment of reabsorption along the line of sight of the spectrographs. The size and the time duration of the collision, the plasma parameters in the collision region (Te, Ti, and ne) and interpenetration were measured. The hydrocode simulations give a good understanding of the behavior of the collision in function of intertarget distance and laser intensity.

Paper Details

Date Published: 18 September 1995
PDF: 7 pages
Proc. SPIE 2523, Applications of Laser Plasma Radiation II, (18 September 1995); doi: 10.1117/12.220983
Show Author Affiliations
Claude J. Chenais-Popovics, Ecole Polytechnique (France)
Ovidiu N. Rancu, Ecole Polytechnique (France)
P. Renaudin, Ecole Polytechnique (France)
Jean-Claude J. Gauthier, Ecole Polytechnique (France)
F. Gilleron, Ecole Polytechnique (France)
O. Lindenmeyer, Ecole Polytechnique (France)
H. Kawagoshi, Ecole Polytechnique (France)
M. Dirksmoeller, Friedrich-Schiller-Univ. Jena (Germany)
Ingo Uschmann, Friedrich-Schiller-Univ. Jena (Germany)
Thomas Missalla, Friedrich-Schiller-Univ. Jena (Germany)
P. C. Sondhauss, Friedrich-Schiller-Univ. Jena (Germany)
Eckhart Foerster, Friedrich-Schiller-Univ. Jena (Germany)
Oldrich Renner, Institute of Physics (Czech Republic)
E. Krousky, Institute of Physics (Czech Republic)
Henri Pepin, INRS-Energie et Materiaux (Canada)
O. Larroche, Ctr. d'Etudes de Limeil-Valenton (France)
Olivier Peyrusse, Ctr. d'Etudes de Limeil-Valenton (France)
Terry D. Shepard, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 2523:
Applications of Laser Plasma Radiation II
Martin C. Richardson; George A. Kyrala, Editor(s)

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