A Systematic Study of Laser Imprint for Direct Drive---from Seeds to Integrated Implosions

ORAL

Abstract

A study of laser imprint for laser direct drive is presented through measurements of the seeds of laser imprint, the associated growth rates of the hydrodynamic instabilities, and a study of the performance of imploded cryogenic DT ice and gas-filled shell targets. By varying the bandwidth on smoothing by spectral dispersion (SSD) the imprint level is varied in fine steps. The seeds were characterized using a 2-D VISAR diagnostic and compared to results from radiation-hydrodynamics simulations. The integrated experiments use measured data from nuclear, x-ray, and optical diagnostics to gauge the implosion performance versus SSD bandwidth. This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856.

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Authors

  • James Knauer

    Laboratory for Laser Energetics, U. of Rochester, 4Laboratory for Laser Energetics, Laboratory for Laser Energetics, LLE-UR, University of Rochester, Lab for Laser Energetics

  • R. Betti

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

  • V. Gopalaswamy

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

  • D. Cao

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

  • D. Patel

    University of Rochester, Lab for Laser Energetics

  • A. Lees

    University of Rochester

  • A. Shvydky

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

  • M. J. Bonino

    University of Rochester

  • E. M. Campbell

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

  • T. J. B. Collins

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

  • C. J. Forrest

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

  • V. Yu. Glebov

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

  • V. N. Goncharov

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

  • D. R. Harding

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

  • J. A. Marozas

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

  • F. J. Marshall

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

  • P. W. McKenty

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

  • J. L. Peebles

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

  • P. B. Radha

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

  • S. P. Regan

    University of Rochester

  • T. C. Sangster

    Laboratory for Laser Energetics, University of Rochester

  • C. Stoeckl

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