摘要
用137Cs 核素溶液实验测量最常用两种型号放射性活度计的井型电离室轴向深度与活度测量示值的关系,从中反映响应灵敏度的轴向变化情况。CRC-25R 型活度计响应最灵敏区域为井型电离室底部向上5 cm 范围内,区域内活度计示值变化为0.3%;RM-905a 型活度计响应最灵敏区域为井型电离室内距底面9~11 cm 范围内,区域内示值变化小于1%。
The relationship between the axial depth and radioactivity calibrators of the two most commonly used well-type lonization chamber is measured experimentally by the 137Cs radionuclide solution, and the axial variation of response sensitivity is reflected.The most sensitive region of the CRC-25R type calibrator is within 5 cm up of the bottom and the variation of the display value in this region is 0.3%;The most sensitive region of the RM-905a type calibrator is 9 to 11 cm up of the bottom, and the variation of display value in this region is less than 1%.
作者
李小双
宋家斑
邹建新
袁杰
韩刚
陆小军
赵超
Li Xiaoshuang;Song Jiaban;Zou Jianxin;Yuan Jie;Han Gang;Lu Xiaojun;Zhao Chao(Shanghai Institute of Measurement and Testing Technology)
出处
《上海计量测试》
2019年第3期2-4,共3页
Shanghai Measurement and Testing
基金
国家自然科学基金青年科学基金项目(11605113)
关键词
活度计
井型电离室
轴向深度
灵敏区域
radioactivity calibrator
well-type lonization chamber
axial depth
sensitive region
