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Proceedings Paper

Multi-keV x-ray conversion from prepulsed foil experiments
Author(s): Frederic Girard; Jean-Paul Jadaud; Michel Naudy; Bruno Villette; Daniele Babonneau; Michel Primout; Sylvie Depierreux; Michael C. Miller; Robert L. Kauffman; Laurence J. Suter; Kevin B. Fournier; S. H. Glenzer; Christina A. Back; Jacob Grun; John F. Davis
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Paper Abstract

Starting from FCI2 simulations showing good multi-keV conversion efficiencies of a preformed plasm from thin foils heated by two laser pulses, experiments have been performed with titanium and copper on the Omega laser facility at University of Rochester. The advantages of using this method are efficiencies close to gas targets due to the under-dense plasma created by the pre-pulse and X-ray emissions available at high photon energies that cannot be reached with gas targets. Optimum parameters (laser intensities, delay between the two pulses and thickness of the foil) for titanium and copper foils were estimated from simulations. An increase in the multi-keV conversion efficiency (above 4 keV) by a factor of 2, compared to the case without pre-pulse, is clearly shown on titanium targets. X-ray emission was measured by different diagnostics in good agreement and close to simulations results.

Paper Details

Date Published: 7 January 2004
PDF: 14 pages
Proc. SPIE 5196, Laser-Generated and Other Laboratory X-Ray and EUV Sources, Optics, and Applications, (7 January 2004); doi: 10.1117/12.510010
Show Author Affiliations
Frederic Girard, CEA-DIF (France)
Jean-Paul Jadaud, CEA-DIF (France)
Michel Naudy, CEA-DIF (France)
Bruno Villette, CEA-DIF (France)
Daniele Babonneau, CEA-DIF (France)
Michel Primout, CEA-DIF (France)
Sylvie Depierreux, CEA-DIF (France)
Michael C. Miller, Lawrence Livermore National Lab. (United States)
Robert L. Kauffman, Lawrence Livermore National Lab. (United States)
Laurence J. Suter, Lawrence Livermore National Lab. (United States)
Kevin B. Fournier, Lawrence Livermore National Lab. (United States)
S. H. Glenzer, Lawrence Livermore National Lab. (United States)
Christina A. Back, Lawrence Livermore National Lab. (United States)
Jacob Grun, Naval Research Lab. (United States)
John F. Davis, Alme & Associates (United States)


Published in SPIE Proceedings Vol. 5196:
Laser-Generated and Other Laboratory X-Ray and EUV Sources, Optics, and Applications
George A. Kyrala; Jean-Claude J. Gauthier; Carolyn A. MacDonald; Ali M. Khounsary, Editor(s)

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