1-D Fast Neutron Source Localization Using Digital Pixelated 3-D Position-Sensitive CdZnTe Detectors
1-D Fast Neutron Source Localization Using Digital Pixelated 3-D Position-Sensitive CdZnTe Detectors
复制标题
DOI：
10.1109/tns.2017.2729942
复制
发表时间：
2017-09-01
影响因子：
1.8
通讯作者：
He, Zhong
中科院分区：
文献类型：
--
作者：
Goodman, David;Streicher, Michael;He, Zhong
在当前的低能量阈值下，像素化 3D CdZnTe 伽马射线探测器中中子弹性散射产生的成分核的反冲是可检测到的。 CdZnTe 探测器通过外散射衰减快中子，并测量探测器像素之间中子相互作用速率的梯度，从而通过最大似然估计器实现一维快中子源定位。使用带有四个探测器晶体 Orion 原型的 MP320 氘-氘中子发生器的实验结果成功地在一维视场中定位四个不同的源位置，将绝对测量误差控制在 2.5 度到 14.0 度之间。
Recoil of constituent nuclei from neutron elastic scatter in pixelated, 3-D CdZnTe gamma-ray detectors is detectable given current low energy thresholds. Fast neutrons are attenuated by CdZnTe detectors via outscatter and measured gradients in neutron interaction rates across detector pixels that enables 1-D fast neutron source localization through a maximum likelihood estimator. Experimental results using an MP320 deuterium-deuterium neutron generator with the four detector crystal Orion prototype successfully localize four different source locations across a 1-D field of view to within absolute measurement errors between 2.5 degrees and 14.0 degrees.