Nondestructive detection of heavily shielded materials by using nuclear resonance fluorescence with a laser-compton scattering γ-ray source

Nobuhiro Kikuzawa, Ryoichi Hajima, Nobuyuki Nishimori, Eisuke Minehara, Takehito Hayakawa, Toshiyuki Shizuma, Hiroyuki Toyokawa, Hideaki Ohgaki

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    51 Citations (Scopus)

    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 thicl<ness 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 blocl< hidden behind 1.5-cm-thicl< iron plates is obtained by measuring an NRF γ-ray of a lead isotope 208Pb. We observe a 5512-l<eV 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.

    Original languageEnglish
    Article number036502
    JournalApplied Physics Express
    Volume2
    Issue number3
    DOIs
    Publication statusPublished - 2009 Mar 1

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

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