Development of Compton radiography using multi-pulse high-Z backlighters

ORAL

Abstract

Radiography of the cold dense fuel will be a valuable diagnostic for imploding inertial confinement fusion targets at the National Ignition Facility (NIF). For x-rays with energies between 30 and 200 keV, the main opacity will be Compton scattering. We report on experiments to characterize x-ray emission from low- to high-Z planar foils irradiated by intense picosecond laser pulses. Spectra generated by a sequence of elements from Mo to Pb, with line and continuum emission up to 100 keV, have been recorded using a Charged Coupled Device (CCD) in single hit regime and a crystal spectrometer. We discuss the results and implications for the design of the experiments at the NIF.

*This work was performed under the auspices of the U.S. Department of Energy by University of California, Lawrence Livermore National Laboratory under Contract W-7405-Eng-48.

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Authors

  • Riccardo Tommasini

    • Lawrence Livermore National Laboratory

  • S. Hatchett

    • Lawrence Livermore National Laboratory

  • H-S. Park

    • Lawrence Livermore National Laboratory

  • P. Patel

    • Lawrence Livermore National Laboratory

  • B Maddox

    • Lawrence Livermore National Laboratory

  • S. Le Pape

    • Lawrence Livermore National Laboratory

  • B. Remington

    • Lawrence Livermore National Laboratory

  • M. Key

    • Lawrence Livermore National Laboratory

  • M. Tabak

    • Lawrence Livermore National Laboratory

  • J. Koch

    • Lawrence Livermore National Laboratory

  • O. Landen

    • Lawrence Livermore National Laboratory

  • N. Izumi

    • Lawrence Livermore National Laboratory

  • A. MacKinnon

    • Lawrence Livermore National Laboratory

  • J. Seely

    • Naval Research Laboratory

  • G. Holland

    • Naval Research Laboratory

  • L. Hudson

    • National Institute of Standards and Technology

  • C. Szabo

    • National Institute of Standards and Technology