Soft X-ray backlighter source driven by a short-pulse laser for pump-probe characterization of warm dense matter

McGuffey, C.; Dozières, M.; Kim, J.; Savin, A.; Park, J.; Emig, J.; Brabetz, C.; Carlson, L.; Heeter, R. F.; McLean, H. S.; Moody, J.; Schneider, M. B.; Wei, M. S.; Beg, F. N.

doi:10.1063/1.5039419

Title: Soft X-ray backlighter source driven by a short-pulse laser for pump-probe characterization of warm dense matter

Journal Article · Tue Oct 16 00:00:00 EDT 2018 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.5039419· OSTI ID:1482222

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^[3]; Emig, J. ^[3];

^[4]; Carlson, L. ^[5];

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^[3]; Moody, J. ^[3];

^[3]; Wei, M. S. ^[5]; Beg, F. N. ^[1]

Univ. of California, San Diego, La Jolla, CA (United States)
Univ. of Oxford, Oxford (United Kingdom)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
GSI Helmholtzzentrum, Darmstadt (Germany)
General Atomics, San Diego, CA (United States)

In this paper, we propose a pump-probe X-ray absorption spectroscopy temperature measurement technique appropriate for matter having temperature in the range of 10 to a few 100 eV and density up to solid density. Atomic modeling simulations indicate that for various low- to mid-Z materials in this range the energy and optical depth of bound-bound and bound-free absorption features are sensitive to temperature. We discuss sample thickness and tamp layer considerations. A series of experimental investigations was carried out using a range of laser parameters with pulse duration ≤5 ps and various pure and alloyed materials to identify backlighter sources suitable for the technique.

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Research Organization:: Univ. of California, San Diego, La Jolla, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: SC0014600

OSTI ID:: 1482222

Alternate ID(s):: OSTI ID: 1477811

Journal Information:: Review of Scientific Instruments, Vol. 89, Issue 10; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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