Nondestructive Detection of Heavily Shielded Materials by Using Nuclear Resonance Fluorescence with a Laser-Compton Scattering γ-ray Source
Nondestructive Detection of Heavily Shielded Materials by Using Nuclear Resonance Fluorescence with a Laser-Compton Scattering γ-ray Source
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DOI：
10.1143/apex.2.036502
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发表时间：
2009-03-01
影响因子：
2.3
通讯作者：
Ohgaki, Hideaki
中科院分区：
文献类型：
--
作者：
Kikuzawa, Nobuhiro;Hajima, Ryoichi;Ohgaki, Hideaki
我们对一种非破坏性的方法进行了原理验证实验，该方法可以检测被厚达几厘米的铁板等厚重屏蔽所隐藏的材料的元素和同位素组成。该方法使用能量可调谐激光-康普顿散射(LCS)伽马射线源触发的核共振荧光(NRF)。通过测量铅同位素铅-208的NRF伽马射线，获得了隐藏在1.5厘米厚铁板后面的铅块的一维地图。我们观测到了由能量高达5.7 MeV的准单色LCS伽马射线激发的5512keV的Pb208伽马射线。铅块的边缘位置与不确定度内的准确位置一致。(C)2009年日本应用物理学会DOI：10.1143/APEX.2.036502
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) gamma-ray source. One-dimensional mapping of a lead block hidden behind 1.5-cm-thick iron plates is obtained by measuring an NRF gamma-ray of a lead isotope Pb-208. We observe a 5512-keV gamma-ray from Pb-208 excited by the quasi-monochromatic LCS gamma-rays with energies up to 5.7 MeV. The edge position of the lead block is consistent with the exact position within the uncertainty. (C) 2009 The Japan Society of Applied Physics DOI: 10.1143/APEX.2.036502