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对用单能中子源作活化截面测量时低能中子干扰的影响作了分析研究，并从测量的两种常用中子源T（d，n）4He和D（d，n）3He的中子源能谱中验证了这种定性分析．最后给出了两个比较典型的反应（58）Ni（n，P）（58）Co和（64）Zn（，P）（64）Cu反应的截面测量结果．
The influence of single-energy neutron source on the low-energy neutron interference during the activation cross-section measurement was analyzed. From the measurement of two commonly used neutron sources T (d, n) 4He and D (d, n) This kind of qualitative analysis is verified in the sub-source energy spectrum. Finally, the results of the cross section measurements of two typical reactions (58) Ni (n, P) (58) Co and (64) Zn (, P) (64) Cu are given.