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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.

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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)<br>

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