Distribution of collected target debris using the large area solid debris radiochemistry collector

doi:https://doi.org/10.1063/1.5039325

Title: Distribution of collected target debris using the large area solid debris radiochemistry collector

Abstract

A large area solid radiochemistry collector was deployed at the National Ignition Facility (NIF) with a collection efficiency for post-shot, solid target debris of approximately 1% of the total 4π solid angle. The collector consisted of a 20-cm diameter vanadium foil surrounded by an aluminum side-enclosure and was fielded 50 cm from the NIF target. The collector was used on two NIF neutron yield shots, both of which had a monolayer of ²³⁸U embedded in the capsule ablator 10 μm from the inner surface. Fission and activation products produced in the ²³⁸U were collected, and subsequent analyses via gamma spectroscopy indicated that the distribution of fission products was not uniform, with peak and valley fission products preferentially collected on the vanadium and low- and high-mass fission products primarily located on the aluminum side-enclosure. The results from these shots will be used to design future nuclear data experiments at NIF.

Authors:

Despotopulos, J. D. ^[1]; Shaughnessy, D. A. ^[1];

^[1]; Moody, K. J. ^[1]; Grant, P. M. ^[1];

^[1]; Waltz, C. S. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Publication Date:: 2018-10-12

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1545510

Alternate Identifier(s):: OSTI ID: 1477214

Grant/Contract Number:: AC52-07NA27344; 16-SI-001

Resource Type:: Journal Article: Accepted Manuscript

Journal Name:: Review of Scientific Instruments

Additional Journal Information:: Journal Volume: 89; Journal Issue: 10; Conference: 22. Topical Conference on High-Temperature Plasma Diagnostics , San Diego, CA (United States), Apr. 2018; Journal ID: ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats


                    Despotopulos, J. D., Shaughnessy, D. A., Gharibyan, N., Moody, K. J., Grant, P. M., Yeamans, C. B., and Waltz, C. S. Distribution of collected target debris using the large area solid debris radiochemistry collector.  United States: N. p., 2018. 
        Web.  doi:10.1063/1.5039325.

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                    Despotopulos, J. D., Shaughnessy, D. A., Gharibyan, N., Moody, K. J., Grant, P. M., Yeamans, C. B., & Waltz, C. S. Distribution of collected target debris using the large area solid debris radiochemistry collector.  United States.  https://doi.org/10.1063/1.5039325

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                    Despotopulos, J. D., Shaughnessy, D. A., Gharibyan, N., Moody, K. J., Grant, P. M., Yeamans, C. B., and Waltz, C. S. Fri .  
        "Distribution of collected target debris using the large area solid debris radiochemistry collector".  United States.  https://doi.org/10.1063/1.5039325.  https://www.osti.gov/servlets/purl/1545510.

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@article{osti_1545510,

  title        = {Distribution of collected target debris using the large area solid debris radiochemistry collector},

  author       = {Despotopulos, J. D. and Shaughnessy, D. A. and Gharibyan, N. and Moody, K. J. and Grant, P. M. and Yeamans, C. B. and Waltz, C. S.},

  abstractNote = {A large area solid radiochemistry collector was deployed at the National Ignition Facility (NIF) with a collection efficiency for post-shot, solid target debris of approximately 1% of the total 4π solid angle. The collector consisted of a 20-cm diameter vanadium foil surrounded by an aluminum side-enclosure and was fielded 50 cm from the NIF target. The collector was used on two NIF neutron yield shots, both of which had a monolayer of 238U embedded in the capsule ablator 10 μm from the inner surface. Fission and activation products produced in the 238U were collected, and subsequent analyses via gamma spectroscopy indicated that the distribution of fission products was not uniform, with peak and valley fission products preferentially collected on the vanadium and low- and high-mass fission products primarily located on the aluminum side-enclosure. The results from these shots will be used to design future nuclear data experiments at NIF.},

  doi          = {10.1063/1.5039325},

  url          = {https://www.osti.gov/biblio/1545510},
  journal      = {Review of Scientific Instruments},

  issn         = {0034-6748},

  number       = 10,

  volume       = 89,

  place        = {United States},

  year         = {2018},

  month        = {10}

}

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Journal Article:

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Accepted Manuscript (DOE)

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https://doi.org/10.1063/1.5039325

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Figures / Tables:

FIG. 1: The LASR assembly (pre-shot) before being mounted onto the end of the DIM for insertion into the NIF target chamber.

All figures and tables (6 total)

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Works referenced in this record:

Large area solid radiochemistry (LASR) collector at the National Ignition Facility
conference, September 2017

Waltz, Cory; Jedlovec, Donald R.; Hardy, Michael C.
Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI
https://doi.org/10.1117/12.2272640

Dynamic high energy density plasma environments at the National Ignition Facility for nuclear science research
journal, February 2018

Cerjan, Ch J.; Bernstein, L.; Hopkins, L. Berzak
Journal of Physics G: Nuclear and Particle Physics, Vol. 45, Issue 3
https://doi.org/10.1088/1361-6471/aa8693

Development of the CD Symcap platform to study gas-shell mix in implosions at the National Ignition Facility
journal, September 2014

Casey, D. T.; Smalyuk, V. A.; Tipton, R. E.
Physics of Plasmas, Vol. 21, Issue 9
https://doi.org/10.1063/1.4894215

Fuel gain exceeding unity in an inertially confined fusion implosion
journal, February 2014

Hurricane, O. A.; Callahan, D. A.; Casey, D. T.
Nature, Vol. 506, Issue 7488
https://doi.org/10.1038/nature13008

Target Development for the National Ignition Campaign
journal, February 2016

Hamza, A. V.; Nikroo, A.; Alger, E.
Fusion Science and Technology, Vol. 69, Issue 1
https://doi.org/10.13182/FST15-163

Radiochemical determination of Inertial Confinement Fusion capsule compression at the National Ignition Facility
journal, June 2014

Shaughnessy, D. A.; Moody, K. J.; Gharibyan, N.
Review of Scientific Instruments, Vol. 85, Issue 6
https://doi.org/10.1063/1.4883186

Fission Product Data Measured at Los Alamos for Fission Spectrum and Thermal Neutrons on 239Pu, 235U, 238U
journal, December 2010

Selby, H. D.; Mac Innes, M. R.; Barr, D. W.
Nuclear Data Sheets, Vol. 111, Issue 12
https://doi.org/10.1016/j.nds.2010.11.002

Figures / Tables found in this record:

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

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Similar Records

Title: Distribution of collected target debris using the large area solid debris radiochemistry collector

Abstract

Citation Formats

Figures / Tables:

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Dynamic high energy density plasma environments at the National Ignition Facility for nuclear science research journal, February 2018

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Fuel gain exceeding unity in an inertially confined fusion implosion
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