TY  - JOUR
AU  - Ziener, C.
AU  - Uschmann, I.
AU  - Stobrawa, G.
AU  - Reich, C.
AU  - Gibbon, P.
AU  - Feurer, T.
AU  - Morak, A.
AU  - Duesterer, S.
AU  - Schwoerer, H.
AU  - Foerster, E.
AU  - Sauerbrey, R.
TI  - Optimization of K alpha bursts for photon energies between 1.7 and 7 keV produced by femtosecond-laser-produced plasmas of different scale length
JO  - Physical review / E
VL  - 65
IS  - 6
SN  - 1063-651X
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-1508
SP  - 066411
PY  - 2002
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000176762900070
DO  - DOI:10.1103/PhysRevE.65.066411
UR  - https://juser.fz-juelich.de/record/1508
ER  -