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.

*This work was performed under the auspices of the U.S. Department of Energy by LLNS, LLC, under Contract No. DE-AC52- 07NA27344.

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