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

Abstract

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 was used to obtain spatially-resolved measurements of Ti K-$$\alpha$$ emission. Density profiles were measured from K-$$\alpha$$ intensity. Ti ionization state distributions and electron temperatures were inferred by fitting K-$$\alpha$$ spectra to spectra from CRETIN simulations. This study 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.

Authors:
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)
Publication Date:
Research Org.:
Univ. of Michigan, Ann Arbor, MI (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1338283
Alternate Identifier(s):
OSTI ID: 1326116; OSTI ID: 1342024
Report Number(s):
LLNL-JRNL-694298
Journal ID: ISSN 0021-8979; TRN: US1701620
Grant/Contract Number:
NA0002956; AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 120; Journal Issue: 12; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

MacDonald, M. J., Keiter, P. A., Montgomery, D. S., Scott, H. A., Biener, M. M., Fein, J. R., Fournier, K. B., Gamboa, E. J., Kemp, G. E., Klein, S. R., Kuranz, C. C., LeFevre, H. J., Manuel, M. J. -E., Wan, W. C., and Drake, R. P. Spatially resolved density and ionization measurements of shocked foams using x-ray fluorescence. United States: N. p., 2016. Web. doi:10.1063/1.4963113.
MacDonald, M. J., Keiter, P. A., Montgomery, D. S., Scott, H. A., Biener, M. M., Fein, J. R., Fournier, K. B., Gamboa, E. J., Kemp, G. E., Klein, S. R., Kuranz, C. C., LeFevre, H. J., Manuel, M. J. -E., Wan, W. C., & Drake, R. P. Spatially resolved density and ionization measurements of shocked foams using x-ray fluorescence. United States. doi:10.1063/1.4963113.
MacDonald, M. J., Keiter, P. A., Montgomery, D. S., Scott, H. A., Biener, M. M., Fein, J. R., Fournier, K. B., Gamboa, E. J., Kemp, G. E., Klein, S. R., Kuranz, C. C., LeFevre, H. J., Manuel, M. J. -E., Wan, W. C., and Drake, R. P. Thu . "Spatially resolved density and ionization measurements of shocked foams using x-ray fluorescence". United States. doi:10.1063/1.4963113. https://www.osti.gov/servlets/purl/1338283.
@article{osti_1338283,
title = {Spatially resolved density and ionization measurements of shocked foams using x-ray fluorescence},
author = {MacDonald, M. J. and Keiter, P. A. and Montgomery, D. S. and Scott, H. A. and Biener, M. M. and Fein, J. R. and Fournier, K. B. and Gamboa, E. J. and Kemp, G. E. and Klein, S. R. and Kuranz, C. C. and LeFevre, H. J. and Manuel, M. J. -E. and Wan, W. C. and Drake, R. P.},
abstractNote = {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 was used to obtain spatially-resolved measurements of Ti K-$\alpha$ emission. Density profiles were measured from K-$\alpha$ intensity. Ti ionization state distributions and electron temperatures were inferred by fitting K-$\alpha$ spectra to spectra from CRETIN simulations. This study 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.},
doi = {10.1063/1.4963113},
journal = {Journal of Applied Physics},
number = 12,
volume = 120,
place = {United States},
year = {Thu Sep 22 00:00:00 EDT 2016},
month = {Thu Sep 22 00:00:00 EDT 2016}
}

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