APS Logo

3D reconstruction techniques for imaging of knock-on deuterons from cryo DT inertial confinement fusion implosions

ORAL

Abstract

Knock-on deuteron imaging is a method for probing the 3D morphology of a cryogenic DT inertial confinement fusion (ICF) implosion. It uses deuterons elastically scattered by fusion neutrons from the fuel layer of the implosion. High-energy deuterons are produced by forward-scattering, and thus provide an image of the neutron-emitting hot spot of the implosion. Low-energy deuterons are produced by side-scattering and energy-slowing down in the fuel, and thus provide information about the dense fuel surrounding the hot spot. As knock-on deuteron images are collected on multiple lines of sight, 3D reconstruction algorithms are required to combine them to form a complete picture of the implosion morphology. Traditional tomographic techniques are not applicable because of the nonlinear relationship between the temperature and density profiles in the implosion and the energy-resolved deuteron image on a given line of sight. Novel iterative reconstruction algorithms that properly account for this relationship have been developed and applied to knock-on deuteron images from warm CD shell implosions at OMEGA. Insights into the 3D shapes of the implosions are presented and discussed.

–

Presenters

  • Justin H Kunimune

    Massachusetts Institute of Technology MI, PSFC, MIT, MIT

Authors

  • Justin H Kunimune

    Massachusetts Institute of Technology MI, PSFC, MIT, MIT

  • Hans Rinderknecht

    Laboratory for Laser Energetics, Laboratory for Laser Energetics - Rochester, Laboratory for Laser Energetics, U. of Rochester, University of Rochester, Laboratory for Laser Energetics, University of Rochester

  • Peter V Heuer

    Laboratory for Laser Energetics, Laboratory for Laser Energetics, University of Rochester

  • Patrick J Adrian

    Massachusetts Institute of Technology (MIT), MIT, Massachusetts Institute of Technology

  • Sean P Regan

    Laboratory for Laser Energetics, University of Rochester, University of Rochester, Laboratory for Laser Energetics, U. of Rochester

  • Maria Gatu-Johnson

    MIT, Massachusetts Institute of Technology MI, Massachusetts Institute of Technology

  • Fredrick H Seguin

    Massachusetts Institute of Technology MIT

  • Johan A Frenje

    Massachusetts Institute of Technology MIT, PSFC, MIT, MIT, Massachusetts Institute of Technology

  • Radha P Bahukutumbi

    University of Rochester, Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics - Rochester

  • James P Knauer

    University of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, University of Rochester

  • Benjamin Bachmann

    Lawrence Livermore Natl Lab

  • Daniel T Casey

    Lawrence Livermore Natl Lab

  • Verena Geppert-Kleinrath

    Los Alamos National Laboratory