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Title: Diagnosing plasma magnetization in inertial confinement fusion implosions using secondary deuterium-tritium reactions

Abstract

Diagnosing plasma magnetization in inertial confinement fusion implosions is important for understanding how magnetic fields affect implosion dynamics and to assess plasma conditions in magnetized implosion experiments. Secondary deuterium–tritium (DT) reactions provide two diagnostic signatures to infer neutron-averaged magnetization. Magnetically confining fusion tritons from deuterium–deuterium (DD) reactions in the hot spot increases their path lengths and energy loss, leading to an increase in the secondary DT reaction yield. In addition, the distribution of magnetically confined DD-triton is anisotropic, and this drives anisotropy in the secondary DT neutron spectra along different lines of sight. Implosion parameter space as well as sensitivity to the applied B-field, fuel ρR, temperature, and hot-spot shape will be examined using Monte Carlo and 2D radiation-magnetohydrodynamic simulations.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3]
+ Show Author Affiliations
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
  3. Imperial College, London (United Kingdom). The Centre for Inertial Fusion Studies, The Blackett Lab.
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1787218
Alternate Identifier(s):
OSTI ID: 1777578
Report Number(s):
LLNL-JRNL-818043
Journal ID: ISSN 0034-6748; 1028402; TRN: US2210424
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 92; Journal Issue: 4; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Neutron spectra; Monte Carlo methods; plasma confinement; nuclear fusion

Citation Formats

Sio, H., Moody, J. D., Ho, D. D., Pollock, B. B., Walsh, C. A., Lahmann, B., Strozzi, D. J., Kemp, G. E., Hsing, W. W., Crilly, A., Chittenden, J. P., and Appelbe, B. Diagnosing plasma magnetization in inertial confinement fusion implosions using secondary deuterium-tritium reactions. United States: N. p., 2021. Web. doi:10.1063/5.0043381.
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Sio, H., Moody, J. D., Ho, D. D., Pollock, B. B., Walsh, C. A., Lahmann, B., Strozzi, D. J., Kemp, G. E., Hsing, W. W., Crilly, A., Chittenden, J. P., & Appelbe, B. Diagnosing plasma magnetization in inertial confinement fusion implosions using secondary deuterium-tritium reactions. United States. https://doi.org/10.1063/5.0043381
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Sio, H., Moody, J. D., Ho, D. D., Pollock, B. B., Walsh, C. A., Lahmann, B., Strozzi, D. J., Kemp, G. E., Hsing, W. W., Crilly, A., Chittenden, J. P., and Appelbe, B. Thu . "Diagnosing plasma magnetization in inertial confinement fusion implosions using secondary deuterium-tritium reactions". United States. https://doi.org/10.1063/5.0043381. https://www.osti.gov/servlets/purl/1787218.
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@article{osti_1787218,
title = {Diagnosing plasma magnetization in inertial confinement fusion implosions using secondary deuterium-tritium reactions},
author = {Sio, H. and Moody, J. D. and Ho, D. D. and Pollock, B. B. and Walsh, C. A. and Lahmann, B. and Strozzi, D. J. and Kemp, G. E. and Hsing, W. W. and Crilly, A. and Chittenden, J. P. and Appelbe, B.},
abstractNote = {Diagnosing plasma magnetization in inertial confinement fusion implosions is important for understanding how magnetic fields affect implosion dynamics and to assess plasma conditions in magnetized implosion experiments. Secondary deuterium–tritium (DT) reactions provide two diagnostic signatures to infer neutron-averaged magnetization. Magnetically confining fusion tritons from deuterium–deuterium (DD) reactions in the hot spot increases their path lengths and energy loss, leading to an increase in the secondary DT reaction yield. In addition, the distribution of magnetically confined DD-triton is anisotropic, and this drives anisotropy in the secondary DT neutron spectra along different lines of sight. Implosion parameter space as well as sensitivity to the applied B-field, fuel ρR, temperature, and hot-spot shape will be examined using Monte Carlo and 2D radiation-magnetohydrodynamic simulations.},
doi = {10.1063/5.0043381},
journal = {Review of Scientific Instruments},
number = 4,
volume = 92,
place = {United States},
year = {Thu Apr 15 00:00:00 EDT 2021},
month = {Thu Apr 15 00:00:00 EDT 2021}
}
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https://doi.org/10.1063/5.0043381
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