Recent measurements of iron opacity on the National Ignition Facility (NIF)

ORAL

Abstract

Radiation transport in high energy density experiments is highly dependent on the x-ray opacity of the material. An experimental platform on the National Ignition Facility has been developed to measure the opacity of materials at densities and temperatures that are comparable to those found in the interior of the sun. The platform consists of a hohlraum to heat the material, a source of x-rays to backlight the sample, and a spectrometer to measure the spectrally resolved transmission of the sample. Experiments in the past year have focused on making measurements at different temperatures and densities. The results of these experiments on iron will be presented and compared to past results and to theoretical calculations.

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Authors

  • TS Perry

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

  • H.M. Johns

    Los Alamos National Laboratory, Los Alamos Natl Lab, LANL

  • ES Dodd

    LANL, Los Alamos Natl Lab

  • N.S. Vinyard

    LANL, Los Alamos Natl Lab

  • C.J. Fontes

    Los Alamos National Laboratory, Los Alamos Natl Lab

  • J.P. Colgan

    Los Alamos Natl Lab

  • Kirk Flippo

    Los Alamos National Laboratory, Los Alamos Natl Lab, Los Alamos Natl Laboratory

  • T. Cardenas

    Los Alamos Natl Lab, Los Alamos National Laboratory

  • T. H. Day

    Los Alamos Natl Lab, Los Alamos National Laboratory

  • L. Kot

    Los Alamos Natl Lab

  • TJ Urbatsch

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

  • M. R. Douglas

    Los Alamos Natl Lab, Los Alamos National Laboratory

  • M.E. Sherrill

    Los Alamos Natl Lab

  • RF Heeter

    Lawrence Livermore National Laboratory, LLNL, Lawrence Livermore Natl Laboratory, Lawrence Livermore Natl Lab, Lawrence Livermore Natl. Lab

  • Kathy Opachich

    LLNL, Lawrence Livermore Natl Lab

  • Rich London

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • B.G. Wilson

    Lawrence Livermore Natl Lab

  • C.A. Iglesias

    Lawrence Livermore Natl Lab

  • M.B. Schneider

    Lawrence Livermore Natl Lab, LLNL

  • JM Heinmiller

    Nevada National Security Site, Nevada Natl Security Site, Nevada Natl. Security Site

  • MS Wallace

    Nevada National Security Site, Nevada Natl Security Site, Nevada Natl. Security Site

  • EC Dutra

    Nevada National Security Site, Nevada Natl Security Site, Nevada Natl. Security Site

  • James Bailey

    Sandia National Laboratory, Sandia Natl Lab, Sandia National Laboratories