Improvements to the NIF opacity platform

ORAL

Abstract

National Ignition Facility (NIF) experiments to measure the x-ray opacity of elements important to the flow of energy in astrophysical systems and other high energy density plasma have been underway for a number of years. In the past year significant improvements have been made to the platform to reduce backgrounds, increase signal strength, expand the spectral coverage of the spectrometer, and increase the range of temperatures and densities over which the measurements can be taken. This presentation will describe these improvements and show the most recent data from experiments on oxygen and iron opacities. This work was performed under the U.S. Department of Energy LANL contract 89233218CNA000001, LLNL Contract No. DE-AC52-07NA27344, Sandia Contract No. DE-AC04-94AL85000, NNSS Contract No. DE-AC52-06NA25946, and Unversity of Texas Contract No. DE-NA0003843.

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Publication: Y.P. Opachich, et al., "DANTE as a primary temperature diagnostic for the NIF iron opacity campaign," Rev. Sci. Instrum. 92, 033519 (2021).
M.S. Wallace, et al., "Upgrades and redesign of the National Ignition Facility's soft x-ray opacity spectrometer (OpSpec)," Rev. Sci. Instrum. 92, 035108 (2021).
E.C. Dutra, et al., "Characterization of AGFA D4 and D3sc X-ray films in the 0.7 to 4.6 keV energy range," Rev. Sci. Instrum. 92, 075103 (2021).

Presenters

  • Theodore S Perry

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory
    • Los Alamos National Lab
    • Lawrence Livermore Natl Lab

Authors

  • Theodore S Perry

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory
    • Los Alamos National Lab
    • Lawrence Livermore Natl Lab

  • Robert F Heeter

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Heather M Johns

    • Los Alamos Natl Lab
    • LANL

  • Yekaterina Opachich

    • Lawrence Livermore Natl Lab

  • Harry F Robey

    • Lawrence Livermore Natl Lab

  • Evan Dodd

    • Los Alamos Natl Lab

  • Natalia Krasheninnikova

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab

  • Thomas Day

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory

  • Chris J Fontes

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab

  • Lynn Kot

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory
    • Los Alamos National Lab

  • Todd Urbatsch

    • Los Alamos National Laboratory
    • Los Alamos National Lab
    • Los Alamos Natl Lab

  • Melissa R Douglas

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory

  • Brian G Wilson

    • Lawrence Livermore Natl Lab
    • Retired

  • Carlos A Iglesias

    • Lawrence Livermore Natl Lab

  • Eric Dutra

    • Nevada National Security Site

  • Matt S Wallace

    • Nevada National Security Site

  • Daniel C Mayes

    • University of Texas - Austin
    • University of Texas at Austin
    • University of Texas, Austin
    • University of Nevada, Reno

  • Don E Winget

    • University of Texas - Austin
    • University of Texas at Austin

  • Michael H Montgomery

    • University of Texas - Austin
    • University of Texas at Austin
    • The University of Texas at Austin

  • James E Bailey

    • Sandia National Laboratories