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Proceedings Paper

Temporal and spectral dependence of samariuom x-ray emission in subpicosecond and nanosecond laser-produced plasmas
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Paper Abstract

Ultra-short x-ray sources are generated by focusing sub- picosecond lasers on massive targets. The emission duration of a samarium x-ray source produced with a 100 TW sub- picosecond laser was measured using an ultra-fast X-ray streak camera. The spectral range was limited around 7.5-8.5 angstrom, the range in which samarium can be used as a backlighter for K(alpha) aluminum absorption experiments. The spectral time-evolution and the duration of samarium emission were measured. Preliminary calculations performed with non-local-thermodynamic equilibrium atomic physics show the plasma cooling which occurs with a characteristic time longer than predicted by radiative hydrocode simulations.

Paper Details

Date Published: 14 November 2001
PDF: 4 pages
Proc. SPIE 4504, Applications of X Rays Generated from Lasers and Other Bright Sources II, (14 November 2001); doi: 10.1117/12.448473
Show Author Affiliations
Claude J. Chenais-Popovics, Lab. pour l'Utilisation des Lasers Intenses (France)
Patrick Audebert, Lab. pour l'Utilisation des Lasers Intenses (France)
M. Fajardo, Lab. pour l'Utilisation des Lasers Intenses (France)
Ronnie L. Shepherd, Lawrence Livermore National Lab. (United States)
Olivier Peyrusse, CEA (France)
Jean-Claude J. Gauthier, Lab. pour l'Utilisation des Lasers Intenses (France)


Published in SPIE Proceedings Vol. 4504:
Applications of X Rays Generated from Lasers and Other Bright Sources II
George A. Kyrala; Jean-Claude J. Gauthier, Editor(s)

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