Experimental Analysis of nT Kinematic Edge Data on OMEGA

ORAL

Abstract

Recent work [A. J. Crilly \textit{et al.}, Phys. Plasmas \textbf{25}, 122703 (2018)] has identified the shape of the nT kinematic edge present in the scattered neutron energy spectrum of DT cryogenic experiments as a useful diagnostic feature. The neutrons that populate the nT kinematic edge spectral feature have originated from scattering events with tritons of various velocities and temperatures, and therefore contain information on the triton velocity distributions. The mean energy of the nT edge is related to the mean of the scatter-weighted triton velocity distribution, while the slope of the edge is related to the variance of the scatter-weighted triton velocity distribution. An experimental analysis of the nT kinematic edge measured in cryogenic implosions on OMEGA will be presented and the mean and variance of the scatter-weighted triton velocity distribution inferred. A comparison to 1-D and 2-D radiation-hydrodynamic simulation results will be presented and provide insights into the interpretation of these values.

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Authors

  • Owen Mannion

    Laboratory for Laser Energetics, University of Rochester

  • D. Cao

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

  • C.J. Forrest

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

  • V.Yu. Glebov

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

  • V. N. Goncharov

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

  • Varchas Gopalaswamy

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

  • J.P. Knauer

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

  • Zaarah Mohamed

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

  • Sean Regan

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

  • Craig Sangster

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

  • C. Stoeckl

    University of Rochester, University of Rochester - LLE, Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, Laboratory for Laser Energetics, U. of Rochester, University of Rochester, NY 14623, USA

  • Aidan Crilly

    Imperial College London, Center for Inertial Fusion Studies, Imperial College

  • Brian Appelbe

    Center for Inertial Fusion Studies, Imperial College

  • J. P. Chittenden

    Imperial College London, Imperial College, Center for Inertial Fusion Studies, Imperial College