用两种效率刻度方法测量比对土壤介质放射性核素  

Comparative Radioactive Analysis of Soil Sample by HPGe γ Spectrometers Based on two Kinds of Efficiency Curve

作　　者：刘晓平[1] 周程[1] 

机构地区：[1]江苏省辐射环境监测管理站,江苏南京210019

出　　处：《中国辐射卫生》2013年第4期401-404,共4页Chinese Journal of Radiological Health

摘　　要：目的为了检验和提高γ谱仪测量准确性。方法本实验室参加了由IAEA组织的土壤介质放射性核素测量比对活动。结果分别采用由标准源刻度的和无源模拟刻度的效率曲线法,使用低本底高纯锗γ谱仪对土壤样品进行测量,通过相对偏差、Z检验、U检验、准确度和精确度等综合检验方法对测量结果进行了比对测试。结论此次比对数据结果为"可以接受",从而验证了效率曲线刻度来源(包括无源模拟)的可靠性。Objective To test and improve the accuracy of γ spectrometer, we participated a comparative analysis ac-tivity organized by IAEA. Methods Our analysis is based on two kinds of efficiency curve carried by two low background and high - purity germanium γ spectrometers respectively. Results The data is checked by a comprehensive set of standard of rel-ative deviation, Z test, U test, accuracy and precision test and marked as acceptable. Conclusion The result demonstrates that the calibration sources of efficiency carve are reliable.

关 键 词：高纯锗Γ谱仪 效率曲线 无源效率 

分 类 号：TL817.4[核科学技术—核技术及应用]