Reconstruction and analysis of knock-on deuteron images of direct-drive ICF implosions at OMEGA

ORAL

Abstract

Knock-on deuteron imaging is a new diagnostic technique that images the source distribution of deuterons that are elastically scattered by primary neutrons generated in a D-T gas-filled ICF implosion. By energy-resolving these deuteron images, obtained in three near-orthogonal directions, information about the morphology of the hot spot and high-density D-T fuel can be obtained. Experimental demonstrations of the concept were successfully conducted at the OMEGA laser facility. In these experiments, several absolutely co-aligned penumbral knock-on deuteron images, with different energy bands, were obtained in the three different directions, from which the hot spot and surrounding high-density shell could be reconstructed. Reconstruction techniques have been developed that will be presented here, along with examples of resulting images. These results demonstrate that this technique works well.

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Authors

  • J. Kunimune

    Massachusetts Institute of Technology, PSFC-MIT

  • Hans Rinderknecht

    Laboratory for Laser Energetics, LLE-UR, LLE

  • P. Adrian

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

  • Johan Frenje

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

  • Sean Regan

    University of Rochester, Laboratory for Laser Energetics - University of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, LLE-UR, LLE, Univ. of Rochester, Laboratory for Laser Energetics, University of Rochester, Lab for Laser Energetics

  • F.H. Seguin

    Massachusetts Institute of Technology, PSFC-MIT

  • Maria Gatu-Johnson

    MIT, Massachusetts Institute of Technology, PSFC-MIT

  • P. B. Radha

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

  • James Knauer

    Laboratory for Laser Energetics, U. of Rochester, 4Laboratory for Laser Energetics, Laboratory for Laser Energetics, LLE-UR, University of Rochester, Lab for Laser Energetics

  • B. Bachmann

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory, LLNL