A Broadband Reflectance Diagnostic for Matter at Extreme Conditions

ORAL

Abstract

In dynamic compression experiments, materials experience dramatic changes in their physical and chemical properties, manifesting in the material's optical properties. Reflectivity measurements are integral to detecting changes in chemical bonding and electronic structure for experiments involving high density and temperature. To this end, our work developed a normal-incidence, visible optical-reflectivity diagnostic for the OMEGA EP Laser System at the University of Rochester's Laboratory for Laser Energetics. This diagnostic measures the time- and wavelength-resolved reflectivity of laser-compressed materials. We present the design of the system, its performance, and experiments on compressed materials. This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856, the University of Rochester, and the New York State Energy Research and Development Authority.

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Authors

  • Brian Henderson

    University of Rochester, LLE, Laboratory for Laser Energetics

  • Mohamed Zaghoo

    University of Rochester, LLE, Laboratory for Laser Energetics

  • James Rygg

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

  • Danae Polsin

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

  • Thomas Boehly

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

  • Gilbert Collins

    None, Laboratory for Laser Energetics, University of Rochester

  • Suzanne Ali

    Lawrence Livermore National Laboratory, Lawrence Livermorre National Laboratory, Lawrence Livermore Natl Lab

  • P. M. Celliers

    Lawrence Livermore National Laboratory, Lawrence Livermore National Laboratories, Lawrence Livermore Natl Lab

  • Amy Lazicki

    Lawrence Livermore National Laboratory, LLNL

  • Martin Gorman

    Lawrence Livermore National Laboratory, LLNL

  • Marius Millot

    Lawrence Livermore National Laboratory, Lawrence Livermore National Laboratory (LLNL), Lawrence Livermore Natl Lab

  • Richard Briggs

    Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab

  • Jon Eggert

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

  • Malcolm McMahon

    University of Edinburgh