层析γ扫描中的探测效率刻度  

Calibration of Detection Efficiency in Tomographic Gamma Scanning

作　　者：张全虎[1] 杨道军[1] 何彬[1] 李泽[2] 顾忠茂[2] 钱绍钧[2] 

机构地区：[1]第二炮兵工程学院,陕西西安710025 [2]中国原子能科学研究院,北京102413

出　　处：《原子能科学技术》2008年第11期1043-1047,共5页Atomic Energy Science and Technology

基　　金：第二炮兵工程学院科技创新基金资助项目(XY2007JJ06)

摘　　要：探测效率刻度技术是层析γ扫描测量中最重要的技术之一。本工作研究用蒙特卡罗方法刻度层析γ扫描系统探测效率的方法。对3×3×3体素组成的样品模型,用蒙特卡罗软件计算了层析γ扫描测量装置的探测效率矩阵。在实验室层析γ扫描原型装置上,实验研究了层析γ扫描测量装置的探测效率。对两者进行了比较,相对偏差绝对值小于5%。研究结果表明了蒙特卡罗方法刻度层析γ扫描测量装置探测效率的可行性。The calibration technique of detection efficiency is one of the most important techniques in tomographic gamma scanning （TGS） method. The calibration of detection efficiency with Monte-Carlo method was proposed. For a 3×3 ×3 TGS model, all 972 efficiency matrix elements were calculated by Monte-Carlo code. The experimental calibration of detection efficiency in TGS prototype was conducted. The calculated values fit the experimental data very well with relative deviation less than 5%. The results show that Monte-Carlo method used to obtain TGS efficiency is feasible and reliable.

关 键 词：层析γ扫描 探测效率刻度 MONTE-CARLO方法 

分 类 号：O572[理学—粒子物理与原子核物理]