NIF-ablator characterization experiments on the Omega laser system

ORAL

Abstract

A detailed understanding of the performance of candidate ablator materials is important for guiding the design of indirect drive ICF capsules for ignition. This includes, but is not limited to understanding measurements of preheat and instability growth. We have previously reported on the development of a high-growth planar Rayleigh Taylor platform in which we have demonstrated growth factors of 200x for sinusoidal 2-D modulations in CH foils. The technique has now been adapted to study 3D surface perturbations in actual NIF ablator materials. In this presentation we show the results of experiments carried out on sputtered Cu-doped Be with random surface perturbations at levels close to those expected on the NIF ignition capsule.

*This work was performed under the auspices of U.S. Department of Energy by the Lawrence Livermore National Laboratory under Contract No. W-7405-Eng-48.

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Authors

  • D.K. Bradley

    • Lawrence Livermore National Laboratory

  • D.G. Braun

    • Lawrence Livermore National Laboratory

  • Gilbert Collins

    • Lawrence Livermore National Laboratory

  • Steven Haan

    • LLNL
    • Lawrence Livermore National Laboratory

  • S.G. Glendinning

    • Lawrence Livermore National Laboratory

  • R.H. Page

    • Lawrence Livermore National Laboratory

  • J.L. Milovich

    • LLNL
    • LLNS
    • Lawrence Livermore National Laboratory

  • Otto Landen

    • LLNL
    • Lawrence Livermore National Laboratory
    • Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550

  • V. Smalyuk

    • U. of Rochester - Laboratory for Laser Energetics
    • Laboratory for Laser Energetics

  • A. Nikroo

    • General Atomics

  • K. Moreno

    • General Atomics

  • H. Huang

    • General Atomics