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Title: The Radiochemical Analysis of Gaseous Samples (RAGS) apparatus for nuclear diagnostics at the National Ignition Facility (invited)

Abstract

The Radiochemical Analysis of Gaseous Samples (RAGS) diagnostic apparatus was recently installed at the National Ignition Facility (NIF). Following a NIF shot, RAGS is used to pump the gas load from the NIF chamber for purification and isolation of the noble gases. After collection, the activated gaseous species are counted via gamma spectroscopy for measurement of the capsule areal density and fuel-ablator mix. Collection efficiency was determined by injecting a known amount of {sup 135}Xe into the NIF chamber, which was then collected with RAGS. Commissioning was performed with an exploding pusher capsule filled with isotopically enriched {sup 124}Xe and {sup 126}Xe added to the DT gas fill. Activated xenon species were recovered post-shot and counted via gamma spectroscopy. Results from the collection and commissioning tests are presented. The performance of RAGS allows us to establish a noble gas collection method for measurement of noble gas species produced via neutron and charged particle reactions in a NIF capsule.

Authors:
; ; ; ; ; ; ;  [1]
  1. Lawrence Livermore National Laboratory, PO Box 808, L-236, Livermore, California 94551 (United States)
Publication Date:
OSTI Identifier:
22093884
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 83; Journal Issue: 10; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CHARGED-PARTICLE REACTIONS; COMMISSIONING; DENSITY; EFFICIENCY; GAMMA SPECTROSCOPY; INERTIAL CONFINEMENT; NEUTRONS; PLASMA; PLASMA DENSITY; PLASMA DIAGNOSTICS; RADIOCHEMICAL ANALYSIS; RADIOCHEMISTRY; US NATIONAL IGNITION FACILITY; XENON; XENON 124; XENON 126; XENON 135

Citation Formats

Shaughnessy, D. A., Velsko, C. A., Jedlovec, D. R., Yeamans, C. B., Moody, K. J., Tereshatov, E., Stoeffl, W., and Riddle, A. The Radiochemical Analysis of Gaseous Samples (RAGS) apparatus for nuclear diagnostics at the National Ignition Facility (invited). United States: N. p., 2012. Web. doi:10.1063/1.4742145.
Shaughnessy, D. A., Velsko, C. A., Jedlovec, D. R., Yeamans, C. B., Moody, K. J., Tereshatov, E., Stoeffl, W., & Riddle, A. The Radiochemical Analysis of Gaseous Samples (RAGS) apparatus for nuclear diagnostics at the National Ignition Facility (invited). United States. https://doi.org/10.1063/1.4742145
Shaughnessy, D. A., Velsko, C. A., Jedlovec, D. R., Yeamans, C. B., Moody, K. J., Tereshatov, E., Stoeffl, W., and Riddle, A. 2012. "The Radiochemical Analysis of Gaseous Samples (RAGS) apparatus for nuclear diagnostics at the National Ignition Facility (invited)". United States. https://doi.org/10.1063/1.4742145.
@article{osti_22093884,
title = {The Radiochemical Analysis of Gaseous Samples (RAGS) apparatus for nuclear diagnostics at the National Ignition Facility (invited)},
author = {Shaughnessy, D. A. and Velsko, C. A. and Jedlovec, D. R. and Yeamans, C. B. and Moody, K. J. and Tereshatov, E. and Stoeffl, W. and Riddle, A.},
abstractNote = {The Radiochemical Analysis of Gaseous Samples (RAGS) diagnostic apparatus was recently installed at the National Ignition Facility (NIF). Following a NIF shot, RAGS is used to pump the gas load from the NIF chamber for purification and isolation of the noble gases. After collection, the activated gaseous species are counted via gamma spectroscopy for measurement of the capsule areal density and fuel-ablator mix. Collection efficiency was determined by injecting a known amount of {sup 135}Xe into the NIF chamber, which was then collected with RAGS. Commissioning was performed with an exploding pusher capsule filled with isotopically enriched {sup 124}Xe and {sup 126}Xe added to the DT gas fill. Activated xenon species were recovered post-shot and counted via gamma spectroscopy. Results from the collection and commissioning tests are presented. The performance of RAGS allows us to establish a noble gas collection method for measurement of noble gas species produced via neutron and charged particle reactions in a NIF capsule.},
doi = {10.1063/1.4742145},
url = {https://www.osti.gov/biblio/22093884}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 10,
volume = 83,
place = {United States},
year = {Mon Oct 15 00:00:00 EDT 2012},
month = {Mon Oct 15 00:00:00 EDT 2012}
}