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Dynamic Shell Stability to Low-Mode Perturbations

ORAL

Abstract

A novel design concept in direct drive inertial confinement fusion utilizes a shell, which is developed from a spherical pellet of liquid DT and then imploded to produce conventional central hot-spot ignition [see Goncharov et al., Phys. Rev. Lett. 125, 065001 (2020)]. The stability of such a dynamic shell to short- and long-wavelength perturbations is of a great interest and importance since these perturbations can result in degradation of implosion performance. We investigate the evolution long-wavelength asymmetries (with spherical modes L < 50) in dynamic shell designs using the 3-D hydrodynamic code ASTER. Simulations help to identify the dependency of implosion performance on assumed mode perturbations. Results of these simulations will guide designs of proof-of-principal experiments on dynamic shell formation on OMEGA and NIF. This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856 and ARPA-E BETHE Grant No. DE-FOA-0002212.

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Presenters

  • Igor V Igumenshchev

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

Authors

  • Igor V Igumenshchev

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

  • Valeri N Goncharov

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

  • Edward M Campbell

    University of Rochester

  • Timothy J Collins

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

  • Michael J Rosenberg

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

  • Nathaniel Shaffer

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

  • Wolfgang R Theobald

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

  • William T Trickey

    York Plasma Institute, Department of Physics, University of York, University of York, University of Rochester, Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics

  • Rahul C Shah

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

  • Alexander Shvydky

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

  • Arnaud Colaïtis

    CELIA, Centre Lasers Intenses et Applications, University of Bordeaux

  • Stefano Atzeni

    Univ of Rome La Sapienza

  • Lorenso Savino

    Univ of Roma La Sapienza