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假设退激过程中除包含巨偶极共振模式外还存在6 He,6 Li,6 Be ,7Li和7Be等粒子集团激发态的退激过程 .本文对这一物理假定作了进一步分析 .利用据此建立的包括这些过程在内的γ射线强度函数 ,计算了在核素93Nb ,1 81 Ta和天然元素Ag上入射中子能量在 0 .0 1— 5MeV能区以及在核素1 97Au上入射中子能量在 0 0 1— 10MeV能区的中子辐射俘获反应截面和γ能谱 ,得到了与实验数据较好符合的结果 .特别是可以较好地解释γ能谱中 5 5MeV之后的反常突起 .这表明 ,上述物理假定适用于中重核中子辐射俘获反应 .
It is assumed that in addition to the giant dipole resonance mode, there exists the annealing process of the excited states of 6 He, 6 Li, 6 Be, 7Li and 7Be particle groups.In this paper, the physical hypothesis is further analyzed. The established γ-ray intensity function including these processes calculates the incident energies of incident neutrons on the nuclides 93Nb, 1 81Ta and the natural element Ag at the 0.010-5MeV energy range and the radionuclides 1 97Au Neutron energy in the 0 10 1- 10 MeV energy neutron capture reaction cross section and γ energy spectrum obtained with the experimental data in good agreement with the results can be better explained in the γ spectrum after 5 5 MeV abnormal This suggests that the above physical assumptions apply to medium and heavy neutron radiation capture reactions.