%0 Journal Article
%A Ziener, C.
%A Uschmann, I.
%A Stobrawa, G.
%A Reich, C.
%A Gibbon, P.
%A Feurer, T.
%A Morak, A.
%A Duesterer, S.
%A Schwoerer, H.
%A Foerster, E.
%A Sauerbrey, R.
%T Optimization of K alpha bursts for photon energies between 1.7 and 7 keV produced by femtosecond-laser-produced plasmas of different scale length
%J Physical review / E
%V 65
%N 6
%@ 1063-651X
%C College Park, Md.
%I APS
%M PreJuSER-1508
%P 066411
%D 2002
%Z Record converted from VDB: 12.11.2012
%X 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.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000176762900070
%R 10.1103/PhysRevE.65.066411
%U https://juser.fz-juelich.de/record/1508