7 January 2004 Multi-keV x-ray conversion from prepulsed foil experiments
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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.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Frederic Girard, Frederic Girard, Jean-Paul Jadaud, Jean-Paul Jadaud, Michel Naudy, Michel Naudy, Bruno Villette, Bruno Villette, Daniele Babonneau, Daniele Babonneau, Michel Primout, Michel Primout, Sylvie Depierreux, Sylvie Depierreux, Michael C. Miller, Michael C. Miller, Robert L. Kauffman, Robert L. Kauffman, Laurence J. Suter, Laurence J. Suter, Kevin B. Fournier, Kevin B. Fournier, S. H. Glenzer, S. H. Glenzer, Christina A. Back, Christina A. Back, Jacob Grun, Jacob Grun, John F. Davis, John F. Davis, } "Multi-keV x-ray conversion from prepulsed foil experiments", Proc. SPIE 5196, Laser-Generated and Other Laboratory X-Ray and EUV Sources, Optics, and Applications, (7 January 2004); doi: 10.1117/12.510010; https://doi.org/10.1117/12.510010


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