Iron Opacity at 156 eV as Measured on the National Ignition Facility (NIF)

POSTER

Abstract

The x-ray opacity of materials is important for regulating the flow of energy in the high energy density regime, but very few experimental measurements exist. To obtain opacity data, an experimental platform has been developed on the NIF. This platform consists of a hohlraum to heat the opacity sample, a source of x-rays to backlight the sample, and a spectrometer to measure the spectrally resolved transmission of the sample. The density and temperature of the sample are also measured. The first measurements on iron at a temperature of $\sim$156 eV and electron density of $\sim$8.4x10$^2$$^1$ per cc have been obtained. These measurements will be compared to theoretical calculations and future improvements to the platform will be discussed. This work was performed under the U.S. Department of Energy LANL contract 89233218CNA000001, LLNL Contract DE-AC52-07NA27344, Sandia Contract DE-AC04-94AL85000, and NNSS Contract DE-AC52-06NA25946.

Authors

  • Theodore Perry

    • Los Alamos National Laboratory

  • Heather Johns

    • Los Alamos National Laboratory

  • Evan Dodd

    • LANL
    • Los Alamos National Laboratory

  • Natalia Vinyard

    • Los Alamos National Laboratory

  • Kirk Flippo

    • Los Alamos National Laboratory

  • Tana Cardenas

    • Los Alamos National Laboratory

  • Chris Fontes

    • Los Alamos National Laboratory

  • Lynn Kot

    • Los Alamos National Laboratory

  • Todd Urbatsch

    • Los Alamos National Laboratory

  • Melissa Douglas

    • Los Alamos National Laboratory

  • Manolo Sherrill

    • Los Alamos National Laboratory

  • Robert Heeter

    • Lawrence Livermore National Laboratory
    • Lawrence Livermore National Lab
    • Lawrence Livermore Natl Lab

  • Yekaterina Opachich

    • Lawrence Livermore National Laboratory

  • Richard London

    • Lawrence Livermore National Laboratory

  • Brian Wilson

    • Lawrence Livermore National Laboratory

  • Carlos Iglesias

    • Lawrence Livermore National Laboratory

  • M.B. Schneider

    • LLNL
    • Lawrence Livermore National Laboratory
    • Lawrence Livermore Natl Lab

  • James Heinmiller

    • Nevada National Security Site

  • J. E. Bailey

    • Sandia National Laboratories
    • Sandia National Laboratory

  • G. A. Rochau

    • Snadia National Laboratories
    • Sandia National Laboratory
    • Sandia National Laboratories