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Measuring Viscosity in Materials At High Pressure and High Temperature

ORAL

Abstract

A material’s viscosity, or resistance to flow, is highly dependent on its thermodynamic conditions. Little is understood about the viscosity of systems under warm dense matter conditions (pressures above 100 GPa), as there are no viscosity measurements taken at pressures above 25 GPa and temperatures above 3000 K. We are developing an experimental platform to obtain viscosity measurements for materials under warm dense matter conditions through utilizing the viscous effect on the evolution of a sinusoidal shock front travelling through a planar target. We have preliminary viscosity measurements for both SiO2 and diamond at pressures above 500 GPa using this platform.

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Presenters

  • Hadley M Pantell

    University of Rochester

Authors

  • Hadley M Pantell

    University of Rochester

  • Nitish Acharya

    University of Rochester

  • Danae N Polsin

    Laboratory for Laser Energetics

  • Jessica K Shang

    Department of Mechanical Energy, University of Rochester. Laboratory for Laser Energetics, Rochester, NY, USA., Dept. of Mechanical Eng, University of Rochester. Laboratory for Laser Energetics, Rochester, NY, USA.

  • Hussein Aluie

    Dept. of Mechanical Engg, University of Rochester, Dept. of Mechanical Engg, University of Rochester. Laboratory for Laser Energetics, Rochester, NY, USA., Dept. of Mechanical Eng, University of Rochester. Laboratory for Laser Energetics, Rochester, NY, USA.

  • Gilbert W Collins

    University of Rochester

  • Ryan Rygg

    Laboratory for Laser Energetics