基于双探测器校正的分段γ扫描技术研究  

An improved gamma scanning technique using two detectors at off-center positions

作　　者：刘诚[1] 王德忠[1] 李厚文[2] 白云飞[1] 钱楠[1] 张适[1] 张继革[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]秦山第三核电有限公司,海盐314300

出　　处：《核技术》2010年第5期342-345,共4页Nuclear Techniques

基　　金：国家自然科学基金(10675084)资助

摘　　要：将探测器对准废物桶两个不同偏心位置进行测量,由两个位置计数率比值,确定桶内放射源所在等效半径位置,从而计算其活度。对非均匀样品进行了测量,结果显示,测量结果误差在10%以内。The equivalent radius of source in a waste drum was determined based on counting rate ratio of two detectors located at off-center positions.The experimental data of a non-uniform sample was presented and compared to that of conventional SGS.The results confirm that the analysis errors are reduced greatly by the technique proposed.

关 键 词：分段γ扫描 探测效率 等效半径 

分 类 号：TL816.2[核科学技术—核技术及应用]