A CdTe detector with a Gd converter for thermal neutron detection
A CdTe detector with a Gd converter for thermal neutron detection
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DOI：
10.1016/j.nima.2011.06.083
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发表时间：
2011-10-21
影响因子：
1.4
通讯作者：
Aoki, Toru
中科院分区：
文献类型：
--
作者：
Miyake, Aki;Nishioka, Takahiro;Aoki, Toru
研制了一种带Gd转化器的CdTe探测器，并对其作为中子成像探测器进行了研究。根据热中子探测效率和空间分辨率的模拟结果，设计了厚度为25 μ m Gd/CdTe探测器。Gd/CdTe探测器的能量分辨率小于4 key，足以区分中子捕获伽马射线和背景伽马射线。Gd/CdTe探测器探测到（155）Gd(n, gamma)(156)Gd、（157）Gd(n, gamma)(158)Gd和（113）Cd(n, gamma)(114)Cd反应中的中子俘获伽马射线发射和Gd膜内产生的转换电子的特征x射线发射。Gd/CdTe探测器对热中子的有效探测显示了它在中子射线照相中的应用前景。(C) 2011 Elsevier B.V.版权所有
A CdTe detector with a Gd converter has been developed and investigated as a neutron detector for neutron imaging. The fabricated Gd/CdTe detector with the 25 mu m thick Gd was designed on the basis of simulation results of thermal neutron detection efficiency and spatial resolution. The energy resolution of the Gd/CdTe detector is less than 4 key, which is enough to discriminate neutron capture gamma rays from background gamma emission. The Gd/CdTe detector shows the detection of neutron capture gamma ray emission in the (155)Gd(n, gamma)(156)Gd, (157)Gd(n, gamma)(158)Gd and (113)Cd(n, gamma)(114)Cd reactions and characteristic X-ray emissions due to conversion-electrons generated inside the Gd film. The observed efficient thermal neutron detection with the Gd/CdTe detector shows its promise in neutron radiography application. (C) 2011 Elsevier B.V. All rights reserved.