Radiative shock properties using x-ray Thomson scattering and self-emission measurements on the National Ignition Facility

ORAL

Abstract

Radiative shocks are relevant to a variety of astrophysical phenomena, such as supernova remnants and accretion shocks. Experiments to understand the structure and radiation transport in radiative shocks inform the interpretation of observational data and improve simulation codes. A recent Discovery Science campaign measured radiative shocks using x-ray Thomson scattering and streaked self-emission from the heated material to extract quantitative information about the temperature profile and radiation transport. The experiment uses a halfraum to drive a radiative shock into a 20 mg cm$^{-3}$ CH foam and a Zn probe foil to produce 9 keV emission for the scattering measurement. The self-emission diagnostic determined the average shock velocity is 130 $\mu$m ns$^{-1}$. This presentation will present the analysis of the scattering and self-emission data collected during the recent discovery science campaign.

* This work is funded by the U.S. DOE NNSA Center of Excellence under cooperative agreement number DE-NA0003869 and the NSF through the Basic Plasma Science and Engineering program NSF 16-564, grant number 1707260. The work of M.J.M., T.D., M.M and C.M.H. was performed under the auspices of the U.S. DOE by LLNL under Contract DE-AC52-07NA27344.

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Authors

  • Heath LeFevre

    University of Michigan, Univ of Michigan - Ann Arbor

  • Kevin Ma

    Univ of Michigan - Ann Arbor

  • M.J. MacDonald

    Lawrence Livermore National Laboratory, LLNL

  • T. Doeppner

    Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab, LLNL

  • Marius Millot

    Lawrence Livermore National Lab, Lawrence Livermore National Laboratory, Livermore, USA, Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Channing Huntington

    Lawrence Livermore National Laboratory

  • Paul Keiter

    Los Alamos National Laboratory, Los Alamos National Lab., LANL, Los Alamos Natl Lab

  • Eric Johnsen

    University of Michigan, Univ of Michigan - Ann Arbor, University of Michigan - Ann Arbor

  • C.C. Kuranz

    University of Michigan, Univ of Michigan - Ann Arbor, U. of Michigan, Ann Arbor, Nuclear Engineering \& Radiological Sciences Department, University of Michigan