摘要
无源效率刻度技术已在辐射探测器的效率刻度中得到了广泛的应用。本文基于点源效率实验及蒙特卡罗模拟计算方法,对溴化镧探测器的晶体尺寸进行了调整;在此基础上,计算得到不同位置处全能峰效率的计算值。点源效率实验的验证结果表明,在121~1 332 keV能量范围内,γ光子全能峰效率的计算值与实验值的相对偏差小于±5%。
The technique of virtual calibration has been widely applied to field of calibration of the radiation detector. In this paper,the dimensions of the LaBr_3 detector were adjusted based on the pointsource experiments with Monte Carlo method. A series of full-energy peak efficiency of the detector were then simulated in different positions. The results of the validation experiment showed that the relative deviations between calculated efficiencies and measurement values are within ± 5% in the energy range of 121—1 332 keV.
作者
曹勤剑
夏三强
刘立业
肖运实
汪屿
李华
Cao Qinjian Xia Sanqiang Liu Liye Xiao Yunshi Wang Yu Li Hua(China Institute of Atomic Energy, Beijing 102413 China Institute for Radiation Protection, Taiyuan 030006)
出处
《辐射防护》
CAS
CSCD
北大核心
2016年第6期364-367,416,共5页
Radiation Protection
基金
国家自然科学基金资助项目(项目编号:11305146
11275174)
关键词
溴化镧探测器
蒙特卡罗
晶体调整
效率刻度
LaBr3 scintillation detector
Monte Carlo method
crystal adjustment
efficiency calibration
