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文章假定在复合核首次和级联γ退激过程中,除包含巨偶极共振模式外,还存在6He,6Li,6Be,7Li和7Be等粒子集团的激发态的退激过程,并据此建立了包括这些过程的γ射线强度函数,计算了入射中子能量在0.01—3MeV能区的中子辐射俘获反应:197Au(n,γ)的反应截面和γ能谱,得到了与实验数据较好符合的结果.特别是,很好地解释了γ能谱中5.5MeV之后的反常突起.
In this paper, it is assumed that in addition to the giant dipole resonance mode, during the first and cascade γ annealing of the composite nuclei, the extinction of the excited states of the particle groups 6He, 6Li, 6Be, 7Li and 7Be is also established The γ ray intensity function including these processes was calculated and the neutron capture reaction of the incident neutron energy in the energy range of 0.01-3 MeV was calculated: the reaction cross section and γ energy spectrum of 197 Au (n, γ) Good results. In particular, the abnormal protuberances after 5.5 MeV in the gamma spectrum are well explained.