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.

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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