辐射防护2009，Vol.29Issue(4)：250-254,5.
利用土壤样品中天然232Th、226Ra衰变子体确定HPGe γ谱仪测量效率的研究
RESEARCH ON DETERMINING THE MEASUREMENT EFFICIENCY OF HPGe γ SPECTROMETER BY USING THE DECAY PRODUCTS OF 232Th AND 226Ra IN SOIL SAMPLES
杨翊方 1王月兴 1王海军 1王震涛 1李珂娴1
作者信息
摘要
Abstract
In the study on the measurement of radioactivity in soil, by using the relativity of the emissivity of gamma photons when 232Th decay series, 226Ra and its short-life daughter, which naturally exist in soil, are b oth balanced, we first establish relative efficiency calibration curves for gamma photons of different energy with HPGe γ spectrometer. Then by using the emissivity of the photon of 40K in KCI, we determine the measurement efficiency of spectrometer for the 1.460 MeV γ photon and thus obtain the efficiency calibration of HPGe γ spectrometer. Compared with the results provided by Radiation Metrology Center of China National Nuclear Company who measured the same samples, our results are consistent with theirs well.关键词
HPGe/γ谱仪/效率刻度/相对效率/232Th/226Ra/40KKey words
HPGe γ Spectrometer, Efficiency Calibration, Relative Efficiency, 232Th, 226Pa, 40K分类
能源科技引用本文复制引用
杨翊方,王月兴,王海军,王震涛,李珂娴..利用土壤样品中天然232Th、226Ra衰变子体确定HPGe γ谱仪测量效率的研究[J].辐射防护,2009,29(4):250-254,5.
