用于快速甄别的可携式放射性检测装置  

A Portable Radioactive Detection Device for Rapid Discrimination

作　　者：方忻[1] 李新军 甘霖[1] 郜强[1] FANG Xin;LI Xinjun;GAN Lin;GAO Qiang(China Institute of Atomic Energy, Department of Racliochemistry, Beijing 102413, China)

机构地区：[1]中国原子能科学研究院放射化学研究所,北京102413

出　　处：《新技术新工艺》2018年第4期51-54,共4页New Technology & New Process

摘　　要：为保证国家公众设施和人民群众的安全,针对科研、医疗和工业探伤等方面使用放射源的数量日益增多的现象,研制了一种用于探测核材料和放射性物质快速甄别的检测装置,给出了相应的快速甄别算法。该装置具有体积小、质量小、拆装方便和使用灵活等优点。该装置采用有线和无线等2种数据通信方式,具备固定布防和移动布防能力。在95%的置信水平下,在距离探测器50cm处,人员步行速度为1m/s,放射源无屏蔽时,对U_3O_8的探测灵敏度可达到10g。To ensure the safety of national public facilities and the people, with the growing number of radiacitve source used in scientific research, medical treatment and industrial flaw detection, a device for nuclear and radioactive material de tection is built. A rapid discrimination technique of radioactive material is also developed in the present work. The device in volves a NaI（T1） detector and four single channel counters. The electronics module is miniaturized to achieve small volume and light weight, easily dismounted and flexibly used. Data are analyzed via fixed and moving average detection method and can be transmitted through wired or wireless web to remote monitor. When a person is walking at the speed of 1 m/s with a radiation source without shielding, the detection sensitivity can reach 10 g U3O8 in the distance of 50 cm from detector at the 95 % confidence level.

关 键 词：放射性检测 NAI(TL)探测器 快速甄别 移动平均法 核材料 Γ射线 

分 类 号：TL812[核科学技术—核技术及应用]