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

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.

doi:10.1063/5.0043381

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

Journal Article · Thu Apr 15 00:00:00 EDT 2021 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/5.0043381· OSTI ID:1787218

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Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
Imperial College, London (United Kingdom). The Centre for Inertial Fusion Studies, The Blackett Lab.

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.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1787218

Alternate ID(s):: OSTI ID: 1777578

Report Number(s):: LLNL-JRNL-818043; 1028402; TRN: US2210424

Journal Information:: Review of Scientific Instruments, Vol. 92, Issue 4; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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

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