Tomographic imaging with an intense laser-driven MeV x-ray source

ORAL

Abstract

Intense photon sources with energy >1 MeV are of significant interest for the radiography of dense objects in research, industry, and defense. One important application is point-projection imaging in tomographic non-destructive evaluation. Irradiation of a high-Z foil with an intense laser drives a large population of relativistic electrons, generating a bright, directed beam of high-energy Bremsstrahlung photons. We report on a source of >1 MeV photons driven by the ALEPH1 laser at Colorado State University, featuring a source size below 0.1 mm. Small source size enables commensurately high image resolution in magnified point-projection radiography, not limited by detector-pixel size. We have exploited the high repetition rate of ALEPH to demonstrate high-resolution 2D radiography and tomographic imaging at 0.5 Hz (1000 views per complete rotation) of a complex object, which shows feasibility for tomography with that photon source. We present the image reconstruction and further characterization of the source.

*This work was supported by the US Department of Energy, Office of Science, Fusion Energy Sciences grant DE-SC0022129 along with the ALEPH laser facility, DE-SC0021246. Work performed under the auspices of the U.S. DOE by Triad National Security, LLC, and Los Alamos National Laboratory. This work is sponsored by the NNSA.

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Publication: Y. Wang et al, "0.85 PW laser operation at 3.3 Hz and high-contrast ultrahigh-intensity λ = 400 nm second-harmonic beamline," Opt. Lett. 42, 3828-3831 (2017)

Presenters

  • Reed C Hollinger

    • Colorado State University

Authors

  • Reed C Hollinger

    • Colorado State University

  • Cort C Gautier

    • Los Alamos National Laboratory, Los Alamos, NM 87544, USA
    • Los Alamos National Laboratory
    • Los Alamos National Laboratory, USA

  • James Hunter

    • Los Alamos National Laboratory, Los Alamos, NM 87544, USA
    • Los Alamos National Laboratory
    • LANL
    • Los Alamos Natl Lab

  • Matt Sheats

    • Los Alamos National Laboratory

  • Sasi Palaniyappan

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory
    • Los Alamos National Laboratory, Los Alamos, NM 87544, USA
    • Los Alamos National Lab

  • Joseph Strehlow

    • Los Alamos National Laboratory, Los Alamos, NM 87544, USA
    • Los Alamos National Laboratory

  • Sven Vogel

    • Los Alamos National Laboratory

  • Brian J Albright

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory, Los Alamos, NM 87544, USA

  • Shoujun Wang

    • Colorado State University

  • Sina Zahedpour Anaraki

    • Colorado State University
    • Colorado state university

  • Jim King

    • Colorado State University

  • Ghassan Zeraouli

    • Colorado State University
    • Lawrence Livermore National Laboratory, Colorado State University

  • Jorge J Rocca

    • Colorado State University
    • XUV lasers and Colorado State University