An improved segmented gamma scanning for radioactive waste drums  

作　　者：LIU Cheng WANG Dezhong BAI Yunfei QIAN Nan 

机构地区：[1]School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

出　　处：《Nuclear Science and Techniques》2010年第4期204-208,共5页核技术（英文）

基　　金：Supported by National Natural Science Foundation of China(No.10675084)

摘　　要：In this paper,the equivalent radius of radioactive sources in each segment is determined by analyzing the different responses of the two identical detectors,and an improved segmented gamma scanning is used to assay waste drums containing mainly organic materials,and proved by an established simulation model.The simulated radioactivity distributions in homogenous waste drum and an experimental heterogeneous waste drum were compared with those of traditional segmented gamma scanning.The results show that our method is good in performance and can be used for analyzing the waste drums.In this paper, the equivalent radius of radioactive sources in each segment is determined by analyzing the different responses of the two identical detectors, and an improved segmented gamma scanning is used to assay waste drums containing mainly organic materials, and proved by an established simulation model. The simulated radioactivity distributions in homogenous waste drum and an experimental heterogeneous waste drum were compared with those of traditional segmented gamma scanning. The results show that our method is good in performance and can be used for analyzing the waste drums.

关 键 词：放射性废物 γ扫描 伽玛 分割 有机材料 模型验证 均匀分布 放射源 

分 类 号：TL94[核科学技术—辐射防护及环境保护] TL249