| 平面型CdZnTe探测器电荷收集效率对能谱测量的影响 |
| |
| 引用本文： | 李杨,罗文芸,贾晓斌,张家磊,王林军.平面型CdZnTe探测器电荷收集效率对能谱测量的影响[J].上海大学学报(自然科学版),2016,22(2):231-237. |
| |
| 作者姓名： | 李杨 罗文芸 贾晓斌 张家磊 王林军 |
| |
| 作者单位： | 1. 上海大学环境与化学工程学院, 上海200444; 2. 上海大学材料科学与工程学院, 上海200072 |
| |
| 基金项目： | 国家自然科学基金资助项目(11375112, 11575108) |
| |
| 摘 要： | 采用蒙特卡洛程序Geant4构建平面型CdZnTe探测器, 模拟241Am(59.5 keV)与137Cs(662 keV)两种不同能量射线从阴极面垂直入射探测器. 通过在Geant4 中添加Hecht 方程来计算探测器不同位置处的电荷收集效率. 根据模拟输出的能谱, 结合能量沉积分布、电子-空穴对分布及其相互作用类型, 在考虑电荷收集效率的情况下, 研究了探测器能谱测量的变化.结果发现, 在考虑电荷收集效率后, 能谱向低能部分偏移, 偏移程度与最大电荷收集效率紧密相关.
|
| 关 键 词： | CdZnTe探测器 电荷收集效率 电子-空穴对 能谱 Geant4 |
| 收稿时间： | 2016-01-16 |
Influence of charge collection efficiency on energy spectrum for planar CdZnTe detector |
| |
| LI Yang,LUO Wenyun,JIA Xiaobin,ZHANG Jialei,WANG Linjun.Influence of charge collection efficiency on energy spectrum for planar CdZnTe detector[J].Journal of Shanghai University(Natural Science),2016,22(2):231-237. |
| |
| Authors: | LI Yang LUO Wenyun JIA Xiaobin ZHANG Jialei WANG Linjun |
| |
| Institution: | 1. School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China;
2. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China |
| |
| Abstract: | Using Monte-Carlo code Geant4 to model the planar CdZnTe detector, the incidences of two different energy ray 241Am (59.5 keV) and 137Cs (662 keV) to the planar CdZnTe detector from the cathode surface perpendicularly were simulated. The charge collection efficiency was calculated by adding the Hecht equation in Geant4. Combined with distributions of the deposited energy, electron-hole pairs and the interaction types, the influence of charge collection efficiency on the energy spectrum was discussed. The results showed that the energy spectrum shifted to the low energy side after considering the charge collection efficiency. The shift was closely connected to the maximum charge collection efficiency. |
| |
| Keywords: | energy spectrum CdZnTe detector charge collection efficiency electron-hole pairs Geant4 |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《上海大学学报(自然科学版)》浏览原始摘要信息 |
| 点击此处可从《上海大学学报(自然科学版)》下载免费的PDF全文 |
