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Title: Spatially resolved density and ionization measurements of shocked foams using x-ray fluorescence

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4963113· OSTI ID:1338283
ORCiD logo [1];  [2];  [3];  [4];  [4];  [2]; ORCiD logo [4];  [5];  [4];  [2];  [2];  [2];  [2];  [2]; ORCiD logo [2]
  1. Univ. of Michigan, Ann Arbor, MI (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Univ. of Michigan, Ann Arbor, MI (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States)

We present experiments at the Trident laser facility demonstrating the use of x-ray fluorescence (XRF) to simultaneously measure density, ionization state populations, and electron temperature in shocked foams. An imaging x-ray spectrometer obtained spatially resolved measurements of Ti K-α emission. Density profiles were measured from K-α intensity. Ti ionization state distributions and electron temperatures were inferred by fitting K-α spectra to spectra from CRETIN simulations. This work shows that XRF provides a powerful tool to complement other diagnostics to make equation of state measurements of shocked materials containing a suitable tracer element.

Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0002956; AC52-07NA27344
OSTI ID:
1338283
Alternate ID(s):
OSTI ID: 1326116; OSTI ID: 1342024
Report Number(s):
LLNL-JRNL-694298; TRN: US1701620
Journal Information:
Journal of Applied Physics, Vol. 120, Issue 12; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

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Cited By (2)

Developing a long-duration Zn K-α source for x-ray scattering experiments journal October 2018
X-ray fluorescence imaging of jet flow in laser driven high-energy-density experiments journal July 2019

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