Journal Article

PreJuSER-1508

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Optimization of K alpha bursts for photon energies between 1.7 and 7 keV produced by femtosecond-laser-produced plasmas of different scale length

Ziener, C. ; Uschmann, I. ; Stobrawa, G. ; Reich, C. ; Gibbon, P.FZJ* ; Feurer, T. ; Morak, A. ; Duesterer, S. ; Schwoerer, H. ; Foerster, E. ; Sauerbrey, R.

2002
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/2214  doi:10.1103/PhysRevE.65.066411

Abstract: The conversion efficiency of a 90 fs high-power laser pulse focused onto a solid target into x-ray Kalpha line emission was measured. By using three different elements as target material (Si, Ti, and Co), interesting candidates for fast x-ray diffraction applications were selected. The Kalpha output was measured with toroidally bent crystal monochromators combined with a GaAsP Schottky diode. Optimization was performed for different laser intensities as well as for different density scale lengths of a preformed plasma. These different scale lengths were realized by prepulses of different intensities and delay times with respect to the main pulse. Whereas the Kalpha yield varied by a factor of 1.8 for different laser intensities, the variation of the density scale length could provide a gain factor up to 4.6 for the Kalpha output.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Zentralinstitut für Angewandte Mathematik (ZAM)

Research Program(s):

1. Methoden und Systeme der Informationstechnik (I02)

Appears in the scientific report 2002
Notes: This version is available at the following Publisher URL: http://pre.aps.org

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