γ吸收法铀浓度测量装置设计  

Design of Uranium Concentration Measuring Device with Gamma Absorption Method

作　　者：吉永超 胡杰[1] 周建斌[1] 洪旭[1] 刘飞 方方[1] JI Yong-chao;HU Jie;ZHOU Jian-bin;HONG Xu;LIU Fei;FANG Fang(College of Nuclear Technology and Automation Engineering Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]成都理工大学核技术与自动化工程学院,成都610059

出　　处：《核电子学与探测技术》2020年第5期817-821,共5页Nuclear Electronics & Detection Technology

基　　金：国家重点研发计划(2016YFC1402505);国家重点研发计划(2018YFC0603300)资助。

摘　　要：设计加工了一套γ吸收法实验室铀浓度测量装置。该装置采用快速硅漂移探测器作为探头,^(241)Am作为放射源。通过配置浓度为10.25 g/L.50.25 g/L.90.23 g/L和124.30g/L的4组铀标准溶液,建立铀浓度工作曲线,并对系统的精密度、准确度和稳定性进行了测试。实验测试表明:该装置可有效地避免铀溶液中裂片元素的γ射线和X射线对测量产生的影响;工作曲线的拟合线性度R^(2)=0.9996;对不同浓度铀溶液(10.25 g/L、90.23 g/L、252.796g/L)的精密度RSD分别为2.29%、0.49%.0.19%;相对误差为2.4%;连续测量10h,数据全部落在μ±3s内。A set of uranium concentration measurement device with gamma absorption method in laboratory was designed and processed.The device uses the fast silicon drift detector as the detec-tor and 241 Am as the radioactive source.Four groups of uranium standard solutions(10.25 g/L,50.25 g/L,90.23 g/L and 124.30 g/L)were configured to establish the working curve of uranium concentration,and the precision,accuracy and stability of the system were tested.The experimental results show that the apparatus can effectively avoid the effect of gamma rays and X rays on the measurement of the fission fragment in uranium solution.Fitting linearity of the working curve R^(2)=0.9999;The RSD of uranium solutions with different concentrations(10.25 g/L,90.23 g/L,252.796 g/L)was 2.29%,0.49%,0.19%.The relative error was 2.4%.Continuous measurement for 10 h,all data fall within μ±3 s.

关 键 词：铀浓度 快速硅漂移探测器 裂片元素 

分 类 号：TL817.2[核科学技术—核技术及应用]