【摘 要】
：
在中子与原子核Pb及其同位素反应的总截面 ,去弹性散射截面 ,弹性散射截面和弹性散射角分布的实验数据基础上 ,获得了入射中子能量从 1— 30 0MeV的一组普适中子与Pb及其同位
【机 构】
：
中国原子能科学研究院 北京102413
论文部分内容阅读
在中子与原子核Pb及其同位素反应的总截面 ,去弹性散射截面 ,弹性散射截面和弹性散射角分布的实验数据基础上 ,获得了入射中子能量从 1— 30 0MeV的一组普适中子与Pb及其同位素反应的光学模型势参数 .应用光学模型 ,扭曲波玻恩近似理论 ,宽度涨落修正的Hauser Feshbach理论 ,预平衡反应的激子模型和核内级联模型 ,计算和分析了中子与2 48Pb反应的所有截面、角分布和能谱 .理论计算与实验数据进行了分析比较
Based on the experimental data of the total cross section of neutron and atomic nucleus Pb and their isotopes, the degenerated scattering cross section, the elastic scattering cross section and the elastic scattering angle distribution, a set of universal neutrons with an incident neutron energy of 1-30 0MeV The optical model potential parameters for the reaction with Pb and its isotopes.Using the optical model, the approximation theory of twisted wave Born, the Hauser Feshbach theory of width fluctuation correction, the exciton model of pre-equilibrium reaction and the in-core cascade model, All cross sections, angular distributions and energy spectra of neutrons and 2 48Pb reactions were analyzed and compared theoretically with experimental data
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