pF3D Simulations of SBS and SRS in NIF Hohlraum Experiments

ORAL

Abstract

We present simulations of stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS) for NIF experiments using high foot pulses in cylindrical hohlraums and for low foot pulses in rugby-shaped hohlraums. We use pF3D [R. L. Berger et al., \textit{Phys. Plasmas} \textbf{5}, 4337 (1998)], a massively-parallel, paraxial-envelope laser plasma interaction code, with plasma profiles obtained from the radiation-hydrodynamics codes Lasnex and HYDRA. We compare the simulations to experimental data for SBS and SRS power and spectrum. We also show simulated SRS and SBS intensities at the target chamber wall and report the fraction of the backscattered light that passes through and misses the lenses. Work performed under the auspices of the U.S. Department of Energy by LLNL under Contract DE-AC52-07NA27344. Release number LLNL-ABS-697482.

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Authors

  • S. Langer

    LLNL, Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • David Strozzi

    LLNL, Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory, Lawrence Livermore National Lab

  • Peter Amendt

    LLNL, Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory, llnl

  • Tom Chapman

    LLNL, Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • L. F. Berzak Hopkins

    Lawrence Livermore Natl Lab, llnl, LLNL

  • A. L. Kritcher

    Lawrence Livermore Natl Lab

  • S.M. Sepke

    Lawrence Livermore Natl Lab, LLNL