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基于MCNP的HPGe探测器无源效率刻度

Liangwen Han,Yedong Gao,Xinghan Xia,Xiaochun Ma,Chong Li,Peng Zhao

Nuclear Safety（2020）

Cited 1|Views0
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Abstract
本文建立了HPGe探测器的MCNP模型,模拟了152Eu标准源主要γ射线全能峰的峰效率,与HPGe探测器的效率刻度实验进行对比分析,依次调整探测器的锗晶体半径、死层厚度和空气间隙,对HPGe探测器的模型参数进行优化.实验结果的对比分析表明,将探测器的晶体半径减少2 mm,探测器死层厚度增加0.1 mm,探测器内部的空气间隙增加4 mm后,模拟结果与实验结果相符,且误差不超过5%.
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