【摘要】 <正> 在钐与铀的不破坏中子活化分析中主要测量46.4小时¹⁵³Sm的103.2keVγ的光峰和56.4小时²⁵⁹Np的277.6keVγ的光峰。但是,在²³⁹Np的衰变中,由于内转换还有较大的几率发射99.5与103.7keV的X射线(²³⁹Pu),它们与²³⁹Np的106.1keVγ严重干扰钐的测量。用SCORPIO/SPECTRAN软件包中的γ谱单峰分析程序分析由SCORPIO-3000计算机程控Ge（Li）γ谱仪测得的经中子活化的纯铀的γ（X）谱,在所得的结果中,更多还原

【Abstract】 In presenta paper, the interference between Sm and U in non-destructive neutron activation analysis has been studied. When the radioactivities of 153Sm and 239Np are close to each other, the 103.2keV photopeak of 153Sm and the 103.7keV photopeak of 239Np (239Pu) do not appear correctly if the single-peak analysis is used. It seriously interfered the accurate measurement of Sm. The overlapping-peak-analysis program designed by our laboratory can be used to obtain the mixture of these two peaks. We use the stripping method. i. e. after stripping the spectrum of pure uranium, the mixed γ spectrum of Sm and U go through the single-peak or overlapping-peak analysis. By this way, we can get the pure 103.2keV photopeak of 153Sm quite accurately. The stripping method can be used to strip the contributions of all the fission products of uranium. This also is the one of its advantages. The stripping method may have other applications in non-destructive neutron activation analysis.更多还原