Hydra modeling of the effect of nearly complete inflight ice and ablator mix in a NIF implosion on several key diagnostics

ORAL

Abstract

A programmed mix model is used with the radiation hydrodynamics code HYDRA to explore the effects of nearly complete inflight mixing of the ice and ablator on NIC implosion performance and diagnostic signatures. In NIC DT implosions, nearly complete mix of the DT ice and ablator can be envisioned via cold jets of material penetrating the ice possibly combined with turbulence at the fuel-ablator interface. The quantitative impact of this scenario on several key NIF diagnostics, including yield, ion temperature, downscattered neutron spectrum, neutron imaging, Ge and Cu atomic emission analysis, gated x-ray imaging, and streaked x-ray radiography will be discussed. This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. LLNL-ABS-564191.

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Authors

  • Andrea Kritcher

    • Lawrence Livermore National Laboratory

  • Scott Sepke

    • Lawrence Livermore National Laboratory

  • Howard Scott

    • Lawrence Livermore National Laboratory

  • Sean Regan

    • Laboratory for Laser Energetics

  • Laurent Masse

    • Lawrence Livermore National Laboratory

  • Kumar Raman

    • Lawrence Livermore National Laboratory

  • Gary Grim

    • Los Alamos National Laboratory

  • Charlie Cerjan

    • Lawrence Livermore National Laboratory

  • Marty Marinak

    • Lawrence Livermore National Laboratory

  • Brian Spears

    • Lawrence Livermore National Laboratory

  • Nathan Meezan

    • Lawrence Livermore National Laboratory

  • Larry Suter

    • Lawrence Livermore National Laboratory