MC模拟能谱对G函数法测量剂量率值结果的影响  

Calculating the Effect of the Energy-spectrum for the Dose rate of G-function Using Monte Carlo Method

作　　者：黄建微[1] 李德红[1] 吴迪[1] 朱志刚[2] 党永乐 

机构地区：[1]中国计量科学研究院,北京100029 [2]北京师范大学核科学与技术学院,北京100875

出　　处：《核电子学与探测技术》2016年第3期283-286,共4页Nuclear Electronics & Detection Technology

摘　　要：为准确、有效地解决固定式剂量仪器的量值溯源,构建基于G函数法的环境级别的剂量装置模型。通过使用MC法,对一款Na I(Tl)探测器的脉冲幅度分布谱进行模拟,并据此考察了截断能量Emin、阶数K、道宽ΔE三个因素对G函数及其计算结果的影响,发现截断能量Emin、阶数K、道宽ΔE对G函数的形状及剂量率计算结果均会产生影响。In order to accurately and efficiently solve the traceability of the stationary dose rate instruments, a Monte Carlo model of measuring dose rate used in environment level based on G - function method was buih. Then pulse -height distribution spectrum detected by a NaI （T1） detector was simulated by using the Monte Carlo method. And the results show that E,.in - the energy limited, K - the order of G - function and AE - the channel width of MCA could affect the accuracy of the dose rate got from using G - function in different way. And the final determination of the three parameters should be depended on experimental condition.

关 键 词：G函数 MC方法 剂量(率) 

分 类 号：TL72[核科学技术—辐射防护及环境保护]