First Successes and Modifications of the NIF Opacity Spectrometer

ORAL

Abstract

The NIF Opacity Spectrometer (OpSpec) began returning X-ray spectra on its first NIF shot in September 2016. In May 2017, OpSpec recorded the first X-ray transmission data for iron-magnesium plasmas on NIF, at ``Anchor 1'' sample conditions (150 eV and 7E21 e-/cc). OpSpec diffracts X-rays in the 540-2100 eV range off a KAP or RbAP crystal onto either image plate or X-ray film. Modifications to further improve OpSpec's performance are underway, with the largest improvements expected in resolving power (E/dE up to 1000) and reduction of background levels. Implementation is planned for NIF shots in August and December 2017. This presentation will discuss the OpSpec data and design improvements, and also future goals.

–

Authors

  • James King

    NSTec, National Security Technologies

  • Eric Huffman

    NSTec, National Security Technologies

  • Russel Knight

    NSTec, National Security Technologies

  • Y.P. Opachich

    NSTec

  • P.W. Ross

    NSTec

  • Robert Heeter

    Lawrence Livermore National Laboratory, LLNL, Lawrence Livermore Natl Lab

  • Maryum Ahmed

    LLNL, Lawrence Livermore Natl Lab

  • James Emig

    LLNL, Lawrence Livermore Natl Lab

  • Duane Liedahl

    Lawrence Livermore National Laboratory, LLNL, Lawrence Livermore Natl Lab

  • M. E. Martin

    LLNL, Lawrence Livermore National Laboratory

  • M.B. Schneider

    Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab, LLNL

  • Nathaniel Thompson

    LLNL, Lawrence Livermore Natl Lab

  • Evan Dodd

    LANL, Los Alamos Natl Lab, Los Alamos National Laboratory

  • Kirk Flippo

    LANL, Los Alamos National Laboratory, Los Alamos Natl Lab

  • John Kline

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

  • F.E. Lopez

    LANL

  • T.N. Archuleta

    LANL

  • Theodore Perry

    LANL, Los Alamos National Laboratory, Los Alamos Natl Lab