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Proceedings Paper

X-ray and optical diagnostics of a 100-fs laser-produced plasma
Author(s): Jean-Paul Geindre; Patrick Audebert; Claude J. Chenais-Popovics; Jean-Claude J. Gauthier; Rene Benattar; Jean-Paul Chambaret; Andre Mysyrowicz; Andre Antonetti
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Paper Abstract

Solid targets have been irradiated by 80 fs laser pulses at 1017 W/cm2 laser irradiance. Spectra obtained in the 0.7 - 0.9 nm wavelength range show that x ray emission occurs at near-solid electron densities (Ne $OM 1023 cm-3). The analysis of the K(alpha) emission line points out the role of hot, fast electrons in the interaction physics. A time-resolved Schlieren imaging technique shows that the ultrashort laser pulses strikes a preplasma created by the laser-amplified spontaneous emission (ASE) with an electron density gradient scale length less than 1 micrometers.

Paper Details

Date Published: 1 October 1991
PDF: 8 pages
Proc. SPIE 1502, Industrial and Scientific Uses of High-Power Lasers, (1 October 1991); doi: 10.1117/12.46904
Show Author Affiliations
Jean-Paul Geindre, Ecole Polytechnique (France)
Patrick Audebert, Ecole Polytechnique (France)
Claude J. Chenais-Popovics, Ecole Polytechnique (France)
Jean-Claude J. Gauthier, Ecole Polytechnique (France)
Rene Benattar, Ecole Polytechnique (France)
Jean-Paul Chambaret, ENSTA-X (France)
Andre Mysyrowicz, ENSTA-X (France)
Andre Antonetti, ENSTA-X (France)

Published in SPIE Proceedings Vol. 1502:
Industrial and Scientific Uses of High-Power Lasers
Jean Pierre Billon; Edouard Fabre, Editor(s)

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