Control of Shell Convergence and Deceleration Rayleigh–Taylor Growth in Dynamic Shell Ignition Designs

ORAL

Abstract

The dynamic shell ignition target designs use a homogeneous-density fuel sphere (liquid of solid) inside a wetted-foam shell[1] to create a fuel shell dynamically by appropriately shaping the laser pulse. Compared to the nominal layered targets, the new designs offer greater flexibility in controlling density of the central, lower-density part of the target by changing the strength of the initial shocks launched into the fuel ball. This, in turn, affects the shell convergence ratio (CR) and Rayleigh–Taylor (RT) growth amplification during deceleration. This talk will review design options to control CR and RT growth in dynamic shell designs.

[1] V. N. Goncharov et al., Phys. Rev. Lett. 125, 065001 (2020).

*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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Publication: V. N. Goncharov et al., Phys. Rev. Lett. 125, 065001 (2020)

Presenters

  • Valeri N Goncharov

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

Authors

  • Valeri N Goncharov

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

  • Yousef Lawrence

    • University of Chicago
    • University of Chicago; Laboratory for Laser Energetics, U. of Rochester

  • 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

  • Igor V Igumenshchev

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

  • Ka Ming Woo

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

  • Nathaniel Shaffer

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

  • Mike M Campbell

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