Conversion efficiency of high-Z backlighter materials.
High-Z backlighter materials are commonly used as x-ray sources for diagnosing laser-driven experiments. In order to properly plan for experiments and analyze the data, it is important to understand both the number and distribution of photons emitted by the x-ray source when it is irradiated by a laser. The conversion efficiency of L-shell and M-shell emitters is not as well understood as K-shell emitters. The conversion efficiency of the former is typically presented in terms of the entire L- or M-shell spectral region. However, for some applications, one may only want to use a subset of this spectral region. Laser conversion efficiency for L-shell and M-shell emitters suitable for high-energy (>3 keV) absorption spectroscopy is presented at multiple laser intensities. The measured conversion efficiency of the materials ranges from 0.2% to 0.6%.
Keiter
Paul A
PA
Los Alamos National Laboratory, Los Alamos, NM 87545, USA. pkeiter@lanl.gov
Comely
Andrew
A
Morton
John
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Tierney
Heidi
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Workman
Jonathan
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Taylor
Mark
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