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Title: A recoverable gas-cell diagnostic for the National Ignition Facility

Here, the high-fluence neutron spectrum produced by the National Ignition Facility (NIF) provides an opportunity to measure the activation of materials by fast-spectrum neutrons. A new large-volume gas-cell diagnostic has been designed and qualified to measure the activation of gaseous substances at the NIF. This in-chamber diagnostic is recoverable, reusable and has been successfully fielded. Data from the qualification of the diagnostic have been used to benchmark an Monte Carlo N-Particle Transport Code simulation describing the downscattered neutron spectrum seen by the gas cell. We present early results from the use of this diagnostic to measure the activation of natXe and discuss future work to study the strength of interactions between plasma and nuclei.
Authors:
 [1] ; ORCiD logo [1] ;  [1] ;  [2] ;  [2] ;  [1] ; ORCiD logo [2] ;  [3] ;  [1] ;  [4] ; ORCiD logo [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of California, Berkeley, CA (United States)
  3. Univ. of Oslo, Oslo (Norway)
  4. iThemba LABS, Somerset West (South Africa)
Publication Date:
Report Number(s):
LLNL-JRNL-695435
Journal ID: ISSN 0034-6748; RSINAK; TRN: US1701701
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 70 PLASMA PHYSICS AND FUSION
OSTI Identifier:
1342074

Ratkiewicz, A., Hopkins, L. Berzak, Bleuel, D. L., Bernstein, L. A., van Bibber, K., Cassata, W. S., Goldblum, B. L., Siem, S., Velsko, C. A., Wiedeking, M., and Yeamans, C. B.. A recoverable gas-cell diagnostic for the National Ignition Facility. United States: N. p., Web. doi:10.1063/1.4961278.
Ratkiewicz, A., Hopkins, L. Berzak, Bleuel, D. L., Bernstein, L. A., van Bibber, K., Cassata, W. S., Goldblum, B. L., Siem, S., Velsko, C. A., Wiedeking, M., & Yeamans, C. B.. A recoverable gas-cell diagnostic for the National Ignition Facility. United States. doi:10.1063/1.4961278.
Ratkiewicz, A., Hopkins, L. Berzak, Bleuel, D. L., Bernstein, L. A., van Bibber, K., Cassata, W. S., Goldblum, B. L., Siem, S., Velsko, C. A., Wiedeking, M., and Yeamans, C. B.. 2016. "A recoverable gas-cell diagnostic for the National Ignition Facility". United States. doi:10.1063/1.4961278. https://www.osti.gov/servlets/purl/1342074.
@article{osti_1342074,
title = {A recoverable gas-cell diagnostic for the National Ignition Facility},
author = {Ratkiewicz, A. and Hopkins, L. Berzak and Bleuel, D. L. and Bernstein, L. A. and van Bibber, K. and Cassata, W. S. and Goldblum, B. L. and Siem, S. and Velsko, C. A. and Wiedeking, M. and Yeamans, C. B.},
abstractNote = {Here, the high-fluence neutron spectrum produced by the National Ignition Facility (NIF) provides an opportunity to measure the activation of materials by fast-spectrum neutrons. A new large-volume gas-cell diagnostic has been designed and qualified to measure the activation of gaseous substances at the NIF. This in-chamber diagnostic is recoverable, reusable and has been successfully fielded. Data from the qualification of the diagnostic have been used to benchmark an Monte Carlo N-Particle Transport Code simulation describing the downscattered neutron spectrum seen by the gas cell. We present early results from the use of this diagnostic to measure the activation of natXe and discuss future work to study the strength of interactions between plasma and nuclei.},
doi = {10.1063/1.4961278},
journal = {Review of Scientific Instruments},
number = 11,
volume = 87,
place = {United States},
year = {2016},
month = {8}
}