X射线计量实验室辐射场的测定  

Measurement of radiation fields of X-ray metrology laboratory

作　　者：唐北曦 文杰 王棋赟 姚正勇 林师宾 TANG Beixi;WEN Jie;WANG Qiyun;YAO Zhengyong;LIN Shibin(Chongqing Jian'an Instrument Co.Ltd.,Chongqing 400060)

机构地区：[1]重庆建安仪器有限责任公司,重庆400060

出　　处：《辐射防护通讯》2024年第5期1-5,共5页Radiation Protection Bulletin

摘　　要：介绍了防护水平X射线计量实验室的建立,并通过物理实验方法对辐射场的场直径、均匀性和散射辐射等性能指标进行验证。结果表明:在窄谱系列X射线参考辐射条件下,测得N-60谱射线束的距离平方反比规律与理论曲线标准偏差为0.54%,散射辐射的贡献小于3.4%;N-100谱10 cm光阑条件下95%场直径为9 cm。结论:本文讨论的X射线计量实验室在场直径、场均匀性及散射等关键技术指标方面,符合GB/T 12162.1—2000的要求。This article mainly introduced the establishment of a protective level X-ray metrology laboratory,which verifies various performance indicators such as field diameter,uniformity,and scattered radiation through physical experimental methods.The results indicated that under the condition of narrow beam spectrum series X-ray reference radiation,the standard deviation between the measured N-60 spectrum and the theoretical curve was 0.54%.The contribution of scattered radiation was less than 3.4%.95% field diameter at a 10 cm aperture in the N-100 spectrum was 9 cm.Conclusion:The X-ray metrology laboratory discussed in this article meets the requirements of GB/T 12162.1—2000 in terms of key technical indicators such as field diameter,field uniformity,and scattering.

关 键 词：X射线 参考辐射场 场均匀性 场直径 散射 

分 类 号：TL84[核科学技术—核技术及应用]