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Hot/Thick – A high radiation temperature path to higher compression

POSTER

Abstract

Inertial confinement fusion (ICF) implosions must reach high hotspot energies (E) and high hotspot pressures (P) and a minimum requirement on the product E*P2 is required to achieve hotspot ignition. The size and scale of the facility and capsule required can be minimized using an implosion driven to high convergence to achieve high areal-density. However, previous attempts to increase convergence by lowering the adiabat have been severely limited by instabilities. We present a novel path to increasing areal-density that is instead achieved by thickening the ablator while simultaneously driving the increased capsule payload to comparable or higher velocity (>400 km/s) with a higher hohlraum radiation temperature (~315 eV). We have conducted a series of experiments to develop a platform that satisfies these conditions. The first results include a backlit radiography experiment which shows increased compression compared to companion shots at the same scale. The results of these experiments as well as scalings to higher energy will be presented.

Presenters

  • Daniel T Casey

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

Authors

  • Daniel T Casey

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Riccardo Tommasini

    Lawrence Livermore National Laboratory

  • Christopher V Young

    Lawrence Livermore National Laboratory

  • Andrea Kritcher

    Lawrence Livermore National Laboratory

  • Alex Zylstra

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Kevin Baker

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Laurent Divol

    Lawrence Livermore Natl Lab, LLNL, Lawrence Livermore National Laboratory

  • Darwin D Ho

    Lawrence Livermore National Laboratory

  • Paul F Schmit

    Lawrence Livermore National Laboratory

  • Paul T Springer

    LLNL, Lawrence Livermore Natl Lab

  • Shaun M Kerr

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Omar Hurricane

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Vladimir A Smalyuk

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Otto L Landen

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