Secondary DT neutron spectra in magnetized indirect-drive implosions

ORAL

Abstract

Diagnosing plasma magnetization in inertial-confinement-fusion (ICF) implosions is important for understanding how magnetic fields affect implosion dynamics. 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. Neutron spectra from magnetized and unmagnetized indirect-drive implosions at the National Ignition Facility (NIF) will be discussed.

*This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344, and LDRD SI-2020-002.

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Presenters

  • Hong W Sio

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

Authors

  • Hong W Sio

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

  • John D Moody

    • Lawrence Livermore National Laboratory
    • Lawrence Livermore Natl Lab
    • LLNL
    • Lawrence Livermore National Lab

  • Bradley B Pollock

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

  • David J Strozzi

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

  • Darwin Ho

    • LLNL
    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

  • Edward P Hartouni

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

  • Chris A Walsh

    • Lawrence Livermore National Laboratory
    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

  • Burl G Logan

    • BG Logan Scientific

  • Sergei Kucheyev

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

  • Bernard Kozioziemski

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

  • Jim Sater

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

  • Johnathan Fry

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

  • Ken Skulina

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

  • Evan Carroll

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab
    • Lawrence Livermore National Laboratory

  • Vincent Tang

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab
    • Lawrence Livermore National Laboratory

  • Scott Winters

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Lab

  • Jeremy P Chittenden

    • Imperial College London

  • Aidan C Crilly

    • Imperial College London
    • CIFS, The Blackett Laboratory, Imperial College London

  • Brian D Appelbe

    • Imperial College London
    • CIFS, The Blackett Laboratory, Imperial College London
    • Imperial College