Nondestructive Detection of Heavily Shielded Materials by Using Nuclear Resonance Fluorescence with a Laser-Compton Scattering γ-ray Source

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Published 6 March 2009 • ©2009 The Japan Society of Applied Physics
, , Citation Nobuhiro Kikuzawa et al 2009 Appl. Phys. Express 2 036502 DOI 10.1143/APEX.2.036502

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Author affiliations

1 Advance Photon Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

2 Advance Photon Research Center, Japan Atomic Energy Agency, Kizugawa, Kyoto 619-0215, Japan

3 Research Institute of Instrumentation Frontier, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8561, Japan

4 Advanced Energy Generation Division, Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan

Dates

  1. Received 29 October 2008
  2. Accepted 17 February 2009
  3. Published

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1882-0786/2/3/036502

Abstract

We perform a proof-of-principle experiment for a nondestructive method for detecting the elemental and isotopic composition of materials concealed by heavy shields such as iron plates with a thickness of several centimeters. This method uses nuclear resonance fluorescence (NRF) triggered by an energy-tunable laser-Compton scattering (LCS) γ-ray source. One-dimensional mapping of a lead block hidden behind 1.5-cm-thick iron plates is obtained by measuring an NRF γ-ray of a lead isotope 208Pb. We observe a 5512-keV γ-ray from 208Pb excited by the quasi-monochromatic LCS γ-rays with energies up to 5.7 MeV. The edge position of the lead block is consistent with the exact position within the uncertainty.

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10.1143/APEX.2.036502