基于气动传输放射源的中子注量率标准装置  

Neutron Fluence Rate Standard Device Based on Pneumatic Transmission Radiation Source

作　　者：方登富[1] 韦应靖[1,2] 李胤 唐智辉 冯梅 崔伟[1] FANG Deng-fu;WEI Ying-jing;LI Ying;TANG Zhi-hui;FENG Mei;CUI Wei(China Institute for radiation protection,Taiyuan 030006,China;Tsinghua University,Beijing 100084,China)

机构地区：[1]中国辐射防护研究院,太原030006 [2]清华大学核能与新能源技术研究院,北京100084

出　　处：《核电子学与探测技术》2023年第2期386-392,共7页Nuclear Electronics & Detection Technology

摘　　要：为保障中子辐射监测设备的量值溯源及进行中子计量研究,中国辐射防护研究院放射性计量站参照GB/T 14055.1—2008建立了基于气动传输放射源的中子注量率标准装置,并对标准装置性能进行了测试。测得辐射特性如下:中子注量率测量范围为10~104 cm^(-2)·s^(-1),相对扩展不确定度为4.6%~5.0%(k=2),重复性为0.64%,稳定性为3.7%。该中子注量率标准装置满足计量标准考核要求,可承担国内中子辐射监测设备的量值传递工作。In order to ensure the quantity traceability of the neutron radiation monitoring equipment,the neutron fluence rate standard device based on pneumatic transmission radiation source with reference to GB/T 14055.1—2008 was built up and the performance of the standard device was tested in laboratory by the Radioactive Metrology Station,China Institute for Radiation Protection.The measured radiation characteristics are as follows:the device has a repeatability of 0.64%,a stability of 3.7%,the neutron fluence rate ranges between 10 cm^(-2)·s^(-1)to 10~4 cm^(-2)·s^(-1),and the relative extended uncertainty of4.6%~5.0%(k=2)was achieved.This neutron fluence rate standard device meets measurement standard assessment requirements,which could be used for value transferring of neutron radiation monitoring equipment in China.

关 键 词：量值溯源 中子计量 重复性 稳定性 

分 类 号：O571[理学—粒子物理与原子核物理]