Numerical Simulations of Shock-Release OMEGA EP Experiments

ORAL

Abstract

Release of shocked material from the inner side of the shell after the shock breakout is an important process in an inertial confinement fusion implosion that affects formation of the hot spot and thereby the implosion performance. Experiments on OMEGA EP at the Laboratory for Laser Energetics were performed to measure the low-density profile of the plasma in the rarefaction wave that follows the shock breakout from the back side of a CH shell driven by two OMEGA EP beams. The shell trajectory was measured using x-ray radiography. The low-density plasma inside the rarefaction wave was measured using 4w interferometry and angular filter refractometry. Results of radiation–hydrodynamic code DRACO simulations of the evolution of the density profile in the rarefaction wave will be presented and compared with the experimental data. Sensitivity of the density profile to the equation of state will be discussed.

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Presenters

  • Alex Shvydky

    Laboratory for Laser Energetics, Univ of Rochester, Univ of Rochester, Univ of Rochester

Authors

  • Alex Shvydky

    Laboratory for Laser Energetics, Univ of Rochester, Univ of Rochester, Univ of Rochester

  • Daniel J Haberberger

    University of Rochester Laboratory for Laser Energetics, Univ of Rochester LLE, Laboratory for Laser Energetics, Laboratory for Laser Energetics, U. of Rochester, Univ of Rochester

  • Dustin H Froula

    University of Rochester Laboratory for Laser Energetics, Univ of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, Laboratory for Laser Energetics, University of Rochester, University of Rochester

  • Valeri N Goncharov

    Univ of Rochester, Laboratory for Laser Energetics, Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics U. of Rochester, University of Rochester, Laboratory for Laser Energetics, U. of Rochester, Lab for Laser Energetics

  • S. X. Hu

    Laboratory for Laser Energetics, U. of Rochester, University of Rochester, Univ of Rochester, Univ of Rochester LLE, Laboratory for Laser Energetics, Laboratory for Laser Energetics, University of Rochester

  • Igor V. Igumenshchev

    Univ of Rochester, Laboratory for Laser Energetics, Lab for Laser Energetics

  • John A Marozas

    Laboratory for Laser Energetics, University of Rochester, Univ of Rochester, Laboratory for Laser Energetics U. of Rochester, Lab for Laser Energetics, Univ of Rochester

  • A. V. Maximov

    Univ of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, University of Rochester, U. of Rochester, Laboratory for Laser Energetics

  • Radha Bahukutumbi

    Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics U. of Rochester, University of Rochester, Univ of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, U. of Rochester, Lab for Laser Energetics, Univ of Rochester