Measurement of platinum phase to over 2 terapascals

POSTER

Abstract

We have performed a series of experiments in which samples of platinum were compressed dynamically using ramp-shaped laser pulses, and the crystal structure was probed using x-ray diffraction. Up to 2.1 TPa, the measured diffraction patterns were consistent with the face centered cubic (fcc) structure. The results demonstrate the near-isentropic nature of the loading path obtained in a laser-driven multi-layer sample and the suitability of Pt as a single-phase standard for use in high pressure experiments.

*This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344

Authors

  • James McNaney

    • Lawrence Livermore National Laboratory
    • Lawrence Livermore Natl Lab

  • Damian Swift

    • Lawrence Livermore National Laboratory
    • Lawrence Livermore Natl Lab

  • Amy Lazicki

    • Lawrence Livermore National Laboratory
    • LLNL

  • James Rygg

    • University of Rochester, LLE
    • University of Rochester
    • Laboratory for Laser Energetics
    • LLE, University of Rochester

  • Joel Bernier

    • Lawrence Livermore National Laboratory

  • Richard Kraus

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

  • Chris Wehrenberg

    • Lawrence Livermore National Laboratory
    • LLNL

  • Jon Eggert

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