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