MeV radiography source development using NIF-ARC and CPC targets

ORAL

Abstract

Kilojoule energy, picosecond duration lasers with intensity \textasciitilde 1x10$^{\mathrm{19}}$ W/cm$^{\mathrm{-2}}$ are promising drivers for MeV x-ray radiography [1]. Recent experiments using the NIF Advanced Radiographic Capability (ARC) laser and compound parabolic concentrator (CPC) targets [2] have reached effective intensities \textgreater 1x10$^{\mathrm{19}}$ W/cm$^{\mathrm{-2}}$, as inferred by measured hot electron temperatures, which is a \textgreater 10x enhancement compared to flat targets. The x-ray source from 0.5mm thick Au foils has been systematically studied over a series of ARC shots, and its size, flux and spectrum characterized. The results and applications to MeV radiography will be discussed, and a planned demonstration of MeV radiography with ARC and CPC targets will be presented. [1] Courtois et al., PoP 2013 [2] MacPhee et al., submitted Optics Express 2019

*This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 and funded by the LLNL LDRD program under tracking code 19-SI-002.

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Authors

  • Shaun Kerr

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • F. Albert

    • Lawrence Livermore National Laboratory

  • D. Alessi

    • Lawrence Livermore National Laboratory

  • M. Bowers

    • Lawrence Livermore National Laboratory

  • H. Chen

    • Lawrence Livermore National Laboratory

  • G. Cochran

    • Lawrence Livermore National Laboratory

  • D. Fittinghof

    • Lawrence Livermore National Laboratory

  • G. Grim

    • Lawrence Livermore National Laboratory

  • M. Hamamoto

    • Lawrence Livermore National Laboratory

  • D. Kalantar

    • Lawrence Livermore National Laboratory

  • A. Kemp

    • Lawrence Livermore National Laboratory

  • O. L. Landen

    • Lawrence Livermore National Laboratory

  • N. Lemos

    • Lawrence Livermore National Laboratory

  • A. Mackinnon

    • Lawrence Livermore National Laboratory

  • A. MacPhee

    • Lawrence Livermore National Laboratory

  • D. Martinez

    • Lawrence Livermore National Laboratory

  • A. Pak

    • Lawrence Livermore National Laboratory

  • L. Pelz

    • Lawrence Livermore National Laboratory

  • M. Prantil

    • Lawrence Livermore National Laboratory

  • D. Rusby

    • Lawrence Livermore National Laboratory

  • D. Schlossberg

    • Lawrence Livermore National Laboratory

  • S. Wilks

    • Lawrence Livermore National Laboratory

  • G. J. Williams

    • Lawrence Livermore National Laboratory

  • W. Williams

    • Lawrence Livermore National Laboratory

  • M. Hill

    • Atomic Weapons Establishment