High-Pressure, High-Temperature Single-Crystal X-ray Diffraction Measurements of Energetic Materials

ORAL

Abstract

Understanding the properties (e.g., equation of state, EOS) of unreacted energetic materials at high-pressure and temperature (HPHT) conditions plays an important role in understanding their behavior under shock conditions. Specifically, determining the HPHT EOS and crystal structure of these materials is important due to the potential existence of HPHT polymorphs, pressure-induced amorphization, and the need of high-fidelity EOS parameters for the unreacted materials for continuum based simulations. Studies measuring the room-temperature EOS of energetic materials are numerous, but few studies probe the unreacted EOS at HPHT conditions. Additionally, due to the low symmetry phases of some of these materials, single-crystal X-ray diffraction (SC-XRD) is required to provide EOS parameters. As such, we have performed SC-XRD in a resistively heated DAC up to 300 °C and 30 GPa to determine the HPHT EOS of these materials.

*Lawrence Livermore National Laboratory is operated by Lawrence Livermore National Security, LLC, for the U.S. Department of Energy, National Nuclear Security Administration under Contract DE-AC52-07NA27344.

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Presenters

  • Jason Baker

    • Lawrence Livermore National Laboratory

Authors

  • Jason Baker

    • Lawrence Livermore National Laboratory

  • Christopher S Perreault

    • Lawrence Livermore National Laboratory

  • Oliver Tschauner

    • University of Nevada, Las Vegas

  • Samantha M Clarke

    • Lawrence Livermore Natl Lab

  • Michael R Armstrong

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Jesse S Smith

    • Argonne National Laboratory

  • Dmitry Popov

    • HPCAT, X-ray Science Division, Argonne National Laboratory
    • High-pressure Collaborative Access Team, X-ray Science Division, Argonne National Laboratory, Argonne, IL 60439, USA

  • Laurence E Fried

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Sorin Bastea

    • Lawrence Livermore National Laboratory
    • LLNL