Effect of Laser Bandwidth on High-Performance, Cryogenic Implosions

ORAL

Abstract

The goal of the high-performance cryogenic implosions on the OMEGA laser is to find the largest generalized Lawson criterion\footnote{ R. Betti \textit{et al.}, Phys. Rev. Lett. \textbf{114}, 255003 (2015).} that is accessible with 30-kJ, direct-drive implosions ($\chi_{\mathrm{no}}_{\alpha }$ OMEGA). $\chi _{\mathrm{no}}_{\alpha }$ OMEGA can then be used to extrapolate to the laser{\-}driver parameters needed for ignition. A study of implosion limitations is needed to meet the above goal. The bandwidth imposed by Smoothing by Spectral Dispersion (SSD) was varied to change the laser imprint on target implosions. Neutron yield ($Y_{\mathrm{n}})$ and areal density ($\rho R)$ were used to measure the implosion performance. $Y_{\mathrm{n}}$ and $\rho R$ data clearly show an SSD dependence that increases as bandwidth increases then plateaus at the higher values of 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

  • J.P. Knauer

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

  • Riccrado Betti

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

  • Varchas Gopalaswamy

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

  • D. Patel

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

  • Aarne Lees

    University of Rochester - LLE, Laboratory for Laser Energetics

  • A. Shvydky

    Laboratory for Laser Energetics, University of Rochester - LLE

  • Mark Bonino

    University of Rochester - LLE

  • Michael Campbell

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

  • Tim Collins

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

  • C.J. Forrest

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

  • V.Yu. Glebov

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

  • V. N. Goncharov

    Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, University of Rochester - LLE, Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, U. of Rochester, University of Rochester, Laboratory for laser Energetics, University of Rochester

  • David Harding

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

  • John Marozas

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

  • F.J. Marshall

    Laboratory for Laser Energetics, U. of Rochester, U. of Rochester's Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, University of Rochester - LLE, Laboratory for Laser Energetics, University of Rochester, University of Rochester, Laboratory for Laser Energetics

  • Patrick McKenty

    Laboratory for Laser Energetics, U. of Rochester, U. of Rochester's Laboratory for Laser Energetics, LLE, University of Rochester, Laboratory for Laser Energetics, University of Rochester - LLE

  • Radha Bahukutumbi

    LLE, University of Rochester, University of Rochester - LLE, Laboratory for Laser Energetics, University of Rochester, Laboratory for laser Energetics, University of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics

  • Sean Regan

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

  • T. Craig Sangster

    University of Rochester - LLE

  • C. Stoeckl

    University of Rochester, University of Rochester - LLE, Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, Laboratory for Laser Energetics, U. of Rochester, University of Rochester, NY 14623, USA

  • D. Cao

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