Establishing Platinum as a shock compression standard to more than 2 TPa

ORAL

Abstract

Shock experiments to ever higher stress states allow to test numerical methods, physics theories, and uncover new unexpected behaviors of matter. However existing EOSs for standards are limited to about half a terapascal, and the problem with extrapolating to much higher pressures is that extrapolations come with significant uncertainties. We experimentally constrained the Pt standard up to > 2 TPa using shock compression on Sandia’s Z machine. We also carried out AIMD simulations and we designed a broad range EOS for Pt: SESAME 3732. Our work establishes Platinum as a shock compression standard to > 2 TPa.

*SNL is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525. Work at Los Alamos National Laboratory is supported by the US DOE through contract number 89233218NCA000001.This work describes objective technical results and analysis. Any subjective views or opinions that might be expressed in the work do not necessarily represent the views of the U.S. Department of Energy or the United States Government.

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Publication: Platinum equation of state to greater than 2 terapascals: experimental data and analytical models
Kyle R. Cochrane, Patricia Kalita, Justin L. Brown, Chad A. McCoy, Jeffry W. Gluth, Heath L. Hanshaw, Edward Scoglietti, and Marcus D. Knudson, Sven P. Rudin and Scott D. Crockett, submitted to PRB

Presenters

  • Patricia Kalita

    • Sandia National Laboratory
    • Sandia National Laboratories

Authors

  • Patricia Kalita

    • Sandia National Laboratory
    • Sandia National Laboratories

  • Kyle R Cochrane

    • Sandia National Laboratories
    • Sandia National Laboratories, Albuquerque NM 87185, USA

  • Justin L Brown

    • Sandia National Laboratories

  • Chad A McCoy

    • Sandia National Laboratories

  • Marcus Knudson

    • Sandia National Laboratories
    • Sandia National Laboratories, Albuquerque NM 87185, USA

  • Sven P Rudin

    • Los Alamos Natl Lab

  • Scott D Crockett

    • Los Alamos Natl Lab