【摘 要】
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在 1 8 0≤A≤ 2 1 0核质量区研究快中子诱发γ射线产生机制中与巨偶极共振模型相关的问题 ,包括 (n ,γ)反应与 (n ,n′γ)反应中级联γ退激过程γ射线强度函数的差异和 (n
【机 构】
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郑州大学物理系,郑州大学物理系,郑州大学物理系 郑州450052rrrrrrrrrn,郑州450052rrrrrrrrrn,郑州450052
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在 1 8 0≤A≤ 2 1 0核质量区研究快中子诱发γ射线产生机制中与巨偶极共振模型相关的问题 ,包括 (n ,γ)反应与 (n ,n′γ)反应中级联γ退激过程γ射线强度函数的差异和 (n ,γ)反应中直接 -半直接辐射俘获与复合核统计过程反应截面之比随入射能量、核质量数和核壳层的变化规律 .据此 ,中子入射能量选在 1— 2 0MeV ,给出了1 81 Ta及1 97Au和2 0 8Pb的理论计算结果及与实验数据的比较 ,并对结果进行了分析和讨论
The problems associated with the giant dipole resonance model in the mechanism of fast neutron induced γ-ray generation in the 1 8 0≤A≤2 10 nuclear mass region include (n, γ) reaction and (n, n’γ) reaction The difference of γ-ray intensity function of cascade γ retarder process and the ratio of the incident energy, nuclear mass and nucleocapsid between direct and semi-direct radiation trapping and complex nuclear statistical process in (n, γ) reaction. Accordingly, the incident energy of neutron is chosen to be 1-2.0MeV, the theoretical calculation results of 1 81 Ta, 1 97Au and 208Pb are given and compared with the experimental data, and the results are analyzed and discussed
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