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Title: Laser shock XAFS studies at OMEGA facility [HPR invited paper on XAFS]

Abstract

State-of-the-art laser facilities offer an excellent opportunity for studying materials at Mbar-Gbar pressures by dynamical compression. In this paper, we summarize recent experiments on EXAFS measurements of compressed solid iron up to 5 Mbar using OMEGA laser facility. The X-ray source is produced by a spherical implosion, providing enough brightness and spectral smoothness required for EXAFS measurements. The compression path is tuned by laser pulse shaping to achieve off-hugoniot states. Lastly, with an anharmonic model, the density, temperature and upper limit of strength of the compressed iron are determined from EXAFS data. Prospects of XAFS study of other materials are also discussed.

Authors:
 [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1458664
Report Number(s):
LLNL-JRNL-690925
Journal ID: ISSN 0895-7959; 818548
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
High Pressure Research
Additional Journal Information:
Journal Volume: 36; Journal Issue: 3; Journal ID: ISSN 0895-7959
Publisher:
Taylor & Francis
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; EXAFS; HED; laser compression: iron

Citation Formats

Ping, Yuan, and Coppari, Federica. Laser shock XAFS studies at OMEGA facility [HPR invited paper on XAFS]. United States: N. p., 2016. Web. doi:10.1080/08957959.2016.1196203.
Ping, Yuan, & Coppari, Federica. Laser shock XAFS studies at OMEGA facility [HPR invited paper on XAFS]. United States. doi:10.1080/08957959.2016.1196203.
Ping, Yuan, and Coppari, Federica. Mon . "Laser shock XAFS studies at OMEGA facility [HPR invited paper on XAFS]". United States. doi:10.1080/08957959.2016.1196203. https://www.osti.gov/servlets/purl/1458664.
@article{osti_1458664,
title = {Laser shock XAFS studies at OMEGA facility [HPR invited paper on XAFS]},
author = {Ping, Yuan and Coppari, Federica},
abstractNote = {State-of-the-art laser facilities offer an excellent opportunity for studying materials at Mbar-Gbar pressures by dynamical compression. In this paper, we summarize recent experiments on EXAFS measurements of compressed solid iron up to 5 Mbar using OMEGA laser facility. The X-ray source is produced by a spherical implosion, providing enough brightness and spectral smoothness required for EXAFS measurements. The compression path is tuned by laser pulse shaping to achieve off-hugoniot states. Lastly, with an anharmonic model, the density, temperature and upper limit of strength of the compressed iron are determined from EXAFS data. Prospects of XAFS study of other materials are also discussed.},
doi = {10.1080/08957959.2016.1196203},
journal = {High Pressure Research},
number = 3,
volume = 36,
place = {United States},
year = {Mon Jul 04 00:00:00 EDT 2016},
month = {Mon Jul 04 00:00:00 EDT 2016}
}

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Works referenced in this record:

Spatially resolved high resolution x-ray spectroscopy for magnetically confined fusion plasmas (invited)
journal, October 2008

  • Ince-Cushman, A.; Rice, J. E.; Bitter, M.
  • Review of Scientific Instruments, Vol. 79, Issue 10, Article No. 10E302
  • DOI: 10.1063/1.2968707