γ能谱多时段检测推定^(18)F活度的方法初探  

Preliminary study on the method for estimating ^(18)F activity through multi-time span spectral detection

作　　者：冯江平 张金帆 郭键锋 FENG Jiangping;ZHANG Jinfan;GUO Jianfeng(Shenzhen Ecological and Environmental Monitoring Center of Guangdong Province,Guangdong Shenzhen 518049)

机构地区：[1]广东省深圳生态环境监测中心站,广东深圳518049

出　　处：《辐射防护》2023年第6期595-597,共3页Radiation Protection

基　　金：生态环境部核与辐射安全监管项目(环办核设函[2021]239号);深圳市科技创新委员会基础研究(面上项目)JCYJ2021032414081203。

摘　　要：为了解决^(18)F活度测量的问题,本研究根据衰变规律,结合γ能谱多时段检测,提出了用γ能谱测量^(18)F活度的方法(衰减法)。验算得到该方法的相对不确定为3.1%,初步认为该方法正确可行,能够解决γ能谱测量^(18)F的技术难点。In order to solve the measurement difficulty of ^(18)F activity,a new method(attenuation method)for measuring ^(18)F activity with energy spectrum is put forward based on the decay law and binding energy spectrum multi-time span detection.Based on empirical calculations,the relative uncertainty of attenuation method is 3.1%.It is preliminarily believed that this method is correct and feasible,and can solve the technical difficulties in energy spectrum measurement of ^(18)F.

关 键 词：正电子衰变 Γ能谱 活度检测 ^(18)F 

分 类 号：TL72[核科学技术—辐射防护及环境保护]