This title appears in the Scientific Report : 2002 

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. / Feurer, T. / Morak, A. / Duesterer, S. / Schwoerer, H. / Foerster, E. / Sauerbrey, R.
Zentralinstitut für Angewandte Mathematik; ZAM
Physical review / E, 65 (2002) S. 066411
College Park, Md. APS 2002
Journal Article
Methoden und Systeme der Informationstechnik
Physical Review E 65
Please use the identifier: in citations.
Please use the identifier: in citations.
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.