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.

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