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Title: Developing a high-flux, high-energy continuum backlighter for extended x-ray absorption fine structure measurements at the National Ignition Facility

Abstract

Extended X-ray absorption fine structure (EXAFS) spectroscopy is a powerful tool for in situ characterization of matter in the high energy density regime. An EXAFS platform is currently being developed on the National Ignition Facility. Development of a suitable X-ray backlighter involves minimizing the temporal duration and source size while maximizing spectral smoothness and brightness. One approach involves imploding a spherical shell, which generates a high-flux X-ray flash at stagnation. Furthermore we present results from a series of experiments comparing the X-ray source properties produced by imploded empty and Ar-filled capsules.

Authors:
ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [2];  [1];  [2];  [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Rochester, Rochester, NY (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:
1479076
Alternate Identifier(s):
OSTI ID: 1476379
Report Number(s):
LLNL-JRNL-750843
Journal ID: ISSN 0034-6748; 936398
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 89; Journal Issue: 10; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Krygier, A., Coppari, F., Kemp, G. E., Thorn, D. B., Craxton, R. S., Eggert, J. H., Garcia, E. M., McNaney, J. M., Park, H. -S., Ping, Y., Remington, B. A., and Schneider, M. B. Developing a high-flux, high-energy continuum backlighter for extended x-ray absorption fine structure measurements at the National Ignition Facility. United States: N. p., 2018. Web. doi:10.1063/1.5038669.
Krygier, A., Coppari, F., Kemp, G. E., Thorn, D. B., Craxton, R. S., Eggert, J. H., Garcia, E. M., McNaney, J. M., Park, H. -S., Ping, Y., Remington, B. A., & Schneider, M. B. Developing a high-flux, high-energy continuum backlighter for extended x-ray absorption fine structure measurements at the National Ignition Facility. United States. https://doi.org/10.1063/1.5038669
Krygier, A., Coppari, F., Kemp, G. E., Thorn, D. B., Craxton, R. S., Eggert, J. H., Garcia, E. M., McNaney, J. M., Park, H. -S., Ping, Y., Remington, B. A., and Schneider, M. B. 2018. "Developing a high-flux, high-energy continuum backlighter for extended x-ray absorption fine structure measurements at the National Ignition Facility". United States. https://doi.org/10.1063/1.5038669. https://www.osti.gov/servlets/purl/1479076.
@article{osti_1479076,
title = {Developing a high-flux, high-energy continuum backlighter for extended x-ray absorption fine structure measurements at the National Ignition Facility},
author = {Krygier, A. and Coppari, F. and Kemp, G. E. and Thorn, D. B. and Craxton, R. S. and Eggert, J. H. and Garcia, E. M. and McNaney, J. M. and Park, H. -S. and Ping, Y. and Remington, B. A. and Schneider, M. B.},
abstractNote = {Extended X-ray absorption fine structure (EXAFS) spectroscopy is a powerful tool for in situ characterization of matter in the high energy density regime. An EXAFS platform is currently being developed on the National Ignition Facility. Development of a suitable X-ray backlighter involves minimizing the temporal duration and source size while maximizing spectral smoothness and brightness. One approach involves imploding a spherical shell, which generates a high-flux X-ray flash at stagnation. Furthermore we present results from a series of experiments comparing the X-ray source properties produced by imploded empty and Ar-filled capsules.},
doi = {10.1063/1.5038669},
url = {https://www.osti.gov/biblio/1479076}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 10,
volume = 89,
place = {United States},
year = {Fri Oct 05 00:00:00 EDT 2018},
month = {Fri Oct 05 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 18 works
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Figures / Tables:

FIG. 1 FIG. 1: The experimental setup. 128 beams drive an implosion in a 1.6 mm diameter GDP shell using the pulse profile shown in the inset (integrated power shown, each beam nominally identical). As shown, one experiment used an empty shell, one shell was filled with 1 atm Ar, and onemore » shell was filled with 4 atm Ar. Time integrated Xray spectra from the implosion are recorded with MACSs on ports 000-000 (polar DIM) and 090-078; a flat {111}- cut Ge crystal is used on 000-000, and a flat {100}-cut quartz crystal is used on 090-078. The X-ray emission at stagnation is imaged using the GXD diagnostic on port 090-315. Dispersed X-rays are recorded with BAS-TR image plates. Temporal X-ray emission is recorded using two DANTE diagnostics on ports 064-350 and 143-274.« less

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Works referenced in this record:

Advanced gated x-ray imagers for experiments at the National Ignition Facility
conference, September 2011


Gated x-ray detector for the National Ignition Facility
journal, October 2006


Dante soft x-ray power diagnostic for National Ignition Facility
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Capsule implosions for continuum x-ray backlighting of opacity samples at the National Ignition Facility
journal, June 2017


Anisotropy in the deep Earth
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A platform for x-ray absorption fine structure study of dynamically compressed materials above 1 Mbar
journal, December 2013


X-ray source development for EXAFS measurements on the National Ignition Facility
journal, August 2017


X-ray and neutron sensitivity of imaging plates
conference, September 2013


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journal, July 2016


X-ray spectrometer throughput model for (selected) flat Bragg crystal spectrometers on laser plasma facilities
journal, October 2018


Equation of state of iron under core conditions of large rocky exoplanets
journal, April 2018


The National Ignition Facility: enabling fusion ignition for the 21st century
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Design of the National Ignition Facility static x-ray imager
journal, January 2001


Works referencing / citing this record:

A new toroidal x-ray crystal spectrometer for the diagnosis of high energy density plasmas at the National Ignition Facility
journal, October 2018


X-ray spectrometer throughput model for (selected) flat Bragg crystal spectrometers on laser plasma facilities
journal, October 2018


Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.