基于CSS-D-60型γ能谱仪的反散射峰测量研究  

Research on Backscatter Peak Measurement Based on CSS-D-60 Type γ Spectrometer

作　　者：冯延强[1] 王铁健[1] 王海洋[1] 于怀远 FENG Yanqiang;WANG Tiejian;WANG Haiyang;YU Huaiyuan(Beijing Research Institute of Uranium Geology,Key Laboratory of Uranium Resource Exploration and Evaluation Technologyof CNNC,Beijing 100029,China;Beijing University of Chemical Technology,School of Information Science and Technology,Beijing 100029,China)

机构地区：[1]核工业北京地质研究院,中核集团铀资源勘查与评价技术重点实验室,北京100029 [2]北京化工大学,信息科学与技术学院,北京100029

出　　处：《计量科学与技术》2024年第3期62-67,44,共7页Metrology Science and Technology

基　　金：中核集团“第四代铀矿勘查关键技术研究与示范”项目(物SD03-02);“伽马能谱直接测铀技术装备研发”项目(物KB2201)。

摘　　要：为探索研究反康技术在γ能谱测量应用中的规律及有效性,在实验室利用CSS-D-60型反康普顿γ能谱仪系统进行了铀矿标物的反康测量研究,分别针对铀钍混合、铀镭平衡和单钍粉末样品进行了实测统计,获取了各类样品中186~1847keV能量段的康普顿散射光子在实测谱中的占比分布。实验结果表明,反康普顿修正数据占比随着能量的增加呈上升趋势,在1001keV能峰处的修正百分占比超60%。研究成果能够为γ能谱测铀技术装备的研发提供重要数据借鉴。To explore the effectiveness and application of anti-Compton technology in γ spectrum measurements,an anti-Compton measurement study of uranium ore standards was conducted in the laboratory using the CSS-D-60 type anti-Compton γ spectrometer system.Specific measurements were taken for mixed uranium-thorium,uranium-radium equilibrium,and single thorium powder samples.The proportion distribution of Compton scattering photons in the measured spectrum in the energy range of 186-1847 keV for these various samples was obtained.The experimental results show that the proportion of anti-Compton correction data increases with energy,and the correction percentage at the 1001 keV energy peak,which is of interest in direct uranium measurement technology,exceeds 60%.The research results can provide important data references for the development of γ spectrum-based uranium measurement technology and equipment.

关 键 词：计量学 康普顿散射 Γ能谱 反康效果 1001keV能峰 测铀技术 

分 类 号：TB98[一般工业技术—计量学]