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Rigorous temperature analysis for colored and Fe-bearing minerals

ORAL

Abstract

Colored and iron (Fe)-bearing minerals pose a unique challenge to taking temperature measurements in shock experiments. The uneven absorption across the visible spectrum and added reflectivity from Fe require additional corrections and considerations. We correct for wavelength-dependent absorption and then use a Monte Carlo calculation to fit a multi-wavelength solution for Sandia Z machine Streaked Visible Spectroscopy (SVS) measurements on Fe-free and Fe-bearing enstatite ((Mg,Fe)SiO3) and on pyrolite (~(Mg,Fe)2SiO4 + (Mg,Fe)SiO3). These results are compared to temperature measurements on the OMEGA-EP Streaked Optical Pyrometry (SOP) system to determine how well results from these facilities correlate considering their different specializations. We observed good temperature agreement between Z and OMEGA within error.

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Publication: Bethany A. Chidester, Marius Millot, Kaitlyn Amodeo, Dylan K. Spaulding, Patricia Kalita, Seth Root, Dayne Fratanduono, Sarah T. Stewart, Stein B. Jacobsen. The shock Hugoniot of Fe-free and Fe-bearing enstatite to 1.7 TPa. In Preparation.

Presenters

  • Kaitlyn M Amodeo

    University of California, Davis

Authors

  • Kaitlyn M Amodeo

    University of California, Davis

  • Bethany A Chidester

    Los Alamos National Laboratory

  • Marius Millot

    LLNL, Lawrence Livermore National Lab

  • Dylan K Spaulding

    University of California, Davis

  • Pat Kalita

    Sandia National Laboratories

  • Seth Root

    Sandia National Laboratories

  • Dayne Fratanduono

    Lawrence Livermore Natl Lab, Lawrence Livermore National Lab

  • Stein B Jacobsen

    Harvard

  • Razvan Caracas

    Univ Lyon I UA 442 CNRS

  • Margaret F Huff

    Lab for Laser Energetics

  • James Badro

    Institut de Physique du Globe de Paris

  • Sarah T Stewart

    University of California, Davis