Stable External Heating of Diamond Anvil Cell: Examples and Issues

ORAL

Abstract

While laser heating has been applied to successfully study materials at extreme conditions, external heating also has been extensively developed and applied for material studies at moderate temperature below $\sim$1000 K at high pressures. We have tested various external heating methods to accomplish stable heating at high pressures. Experimental measurements using two mini coil heaters at 900 K and 580 K to 100 GPa and 185 GPa, respectively and isobaric heating at 95 GPa up to 1000 K will be presented. New measurements using a graphite gasket heater will be compared along with internal heating methods. We will present comparison among different external heating methods and different temperature measurements using various examples. HP-CAT is supported by CIW, CDAC, UNLV, and LLNL through funding from DOE-NNSA, DOE-BES, and NSF. The APS is supported by DOE-BES under Contract No. DE-AC02-06CH11357.

*This work was performed under the auspices of the US Department of Energy by Lawrence Livermore National Laboratory in part under Contract No. W-7405-Eng-48 and in part under Contract No. DE-AC52-07NA27344.

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Authors

  • Hyunchae Cynn

    • Lawrence Livermore National Laboratory
    • High Pressure Physics Group, Lawrence Livermore National Laboratory

  • Zsolt Jenei

    • Lawrence Livermore National Laboratory

  • Jesse Smith

    • Geophysical Laboratory, Carnegie Institute, Washington D.C.

  • Changyong Park

    • Geophysical Laboratory, Carnegie Institute, Washington D.C.

  • Hans-Peter Liermann

    • DESY, PETRA-III

  • William Evans

    • Lawrence Livermore National Laboratory