How our physics understanding changes when we move from 2D to 3D measurements in ICF plasmas

ORAL

Abstract

Recent inertial confinement fusion (ICF) measurements have highlighted the importance of 3D asymmetry effects on implosion performance. One prominent example is the bulk drift velocity of the deuterium-tritium plasma undergoing fusion (``hot spot''). Upgrades to the National Ignition Facility neutron time-of-flight diagnostics now provide v$_{\mathrm{bulk}}$ to better than 1 part in 10$^{\mathrm{4}}$, and enable cross-correlations with other measurements. This talk presents the impact of v$_{\mathrm{bulk}}$ on neutron yield, downscatter ratio, apparent ion temperature, electron temperature, and 2D x-ray and neutron emission. The benefits of using cross-diagnostic analysis to obtain 3D views of the plasma is highlighted. A comparison with modeling is made, and future concepts for measuring hot spot flows is presented. This research reflects the growing interest in 3D measurements of the national ICF community.

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

–

Authors

  • D. J. Schlossberg

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Richard Bionta

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Daniel Casey

    • Lawrence Livermore Natl Lab
    • LLNL

  • Mark Eckart

    • Lawrence Livermore Natl Lab

  • David Fittinghoff

    • Lawrence Livermore Natl Lab

  • K.D. Hahn

    • Lawrence Livermore Natl Lab

  • Edward Hartouni

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Justin Jeet

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Shaun Kerr

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • A.J. Mackinnon

    • Lawrence Livermore Natl Lab

  • Alastair Moore

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

  • Michael Rubery

    • UK Atomic Weapons Establishment
    • Atomic Weapons Establishment
    • AWE

  • V. Geppert-Kleinrath

    • Los Alamos Natl Lab

  • Petr Volegov

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory