Analysis of hard x-ray data from "hot" hohlraums of various geometries at the National Ignition Facility

ORAL

Abstract

A suite of hard x-ray data from “hot,” variously shaped and sized vacuum hohlraum experiments, is analyzed. These hohlraums were driven by 96 beams of the National Ignition Facility (NIF) laser, with laser pulse durations in the range of ~ 2 - 3 ns, and energies of ~ 4 - 6 kJ per beam.

The measurements, in the x-ray range of 20 - 100 keV, produced outlier levels of hard x-ray flux on the NIF.

Fits to the Filter-Fluorescer (FFLEX) data imply a hot electron temperature of 30 - 40 keV. Here we discuss the trends observed in the FFLEX data, and revisit the underlying assumptions of the fits. We also discuss these results in the context of other data, including backscatter and L-shell Au spectroscopic measurements.



*This work was done under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344.

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Presenters

  • Natalie Kostinski

    • Lawrence Livermore Natl Lab

Authors

  • Natalie Kostinski

    • Lawrence Livermore Natl Lab

  • Mark J May

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • William A Farmer

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Richard L Berger

    • Lawrence Livermore Natl Lab

  • Marilyn B Schneider

    • Lawrence Livermore Natl Lab
    • LLNL

  • Denise E Hinkel

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

  • Jean Jensen

    • Lawrence Livermore National Laboratory

  • Steve Johnson

    • Lawrence Livermore National Laboratory

  • Elvin R Monzon

    • LLNL
    • Lawrence Livermore National Laboratory

  • Shon T Prisbrey

    • Lawrence Livermore Natl Lab