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.
出处
《核技术》
CAS
CSCD
北大核心
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
关键词
分段γ扫描
探测效率
等效半径
Segmented gamma scanning
Detection efficiency
Equivalent radius
