摘要
本文报道了高纯锗γ谱仪分析近臣测量大体积环境样品的一组实用效率刻度曲线。它是在进行联级γ辐射符合修正的基础上，既克服了体源的自吸收修正计算，又避开了体源几何高度修正。在此效率刻度曲线的基础上，用插值法就可方便地获得不同密度、不同几何高度的环境体源样品的γ谱分析结果。这对用γ谱仪测量环境体源样品的实验室是非常实用的。
In order to eliminate the gamma cascade coincidence, self-absorption and geometric correc-tion by semiconductor gamma spectrometers in measuring closely the big-volumn environmen-tal samples , we made in laboratory a series of gamma standard sources of various densities andsizes and then obtained a group of applied efficiency calibration curves for gamma-spectrometricanalysis.For the ordinary measuring and analyzing of gamma spectrum,on the basis of thecurves and with interpolation method, we can obtain convieniently the specific activity of thegamma nuclide in large-volumn environmental samples.(
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
1994年第6期363-366,共4页
Nuclear Electronics & Detection Technology
关键词
γ能谱分析
几何修正
效率刻度曲线
体源
Specific activity Gamma-spectrometric analysis Total absorption detec-tion efficiency Geomeric correction Effciency calibration curres )
