利用γ谱仪进行U~(235)含量的分析,前人曾作了一些工作。如莫里桑(Morrison)与科斯格罗符(Cosgrove)利用U~(235)γ能谱峰下的面积来测定其含量。萨基什(Sarkes)与麦克金隆(Mackinnon)以及帕利(Perry)利用积分计数方法测定了U~(235)的含量。本文将着重研究Th~(234)的干扰及实验方法。U~(235)有五种不同能量的γ射线,即:γ_1=94千电子伏;γ_2=143千电子伏;γ_3=184千电子伏;γ_4=289千电子伏及γ_5=386千电子伏。强度比为γ_1∶γ_2∶γ_3∶γ_4∶γ_5=0.9∶0.2∶ The use of γ spectrometer U ~ (235) content analysis, previous work has been made. For example, Morrison and Cosgrove use the area under the U 235 gamma peak to determine their content. S 235 and Sarkes and Mackinnon and Perry determined the content of U 235 using the integral count method. This article will focus on Th ~ (234) interference and experimental methods. U ~ (235) has five gamma rays of different energies, namely: γ_1 = 94 keV; γ_2 = 143 keV; γ_3 = 184 keV; γ_4 = 289 keV and γ_5 = 386 keV . The intensity ratio is γ_1: γ_2: γ_3: γ_4: γ_5 = 0.9: 0.2: