p+^(209)Bi核反应微观数据的理论计算

Theoretical Calculations of Microscopic Nuclear Reaction Data for p+^(209)Bi in Energy Region up to 300MeV

利用光学模型、激光模型、蒸发模型及扭曲波玻恩近似理论 ,对入射能量从阈能到 3 0 0MeV ,p + 2 0 9Bi的中子反应截面、剩余核截面、出射粒子的多重数进行了理论计算及分析 ,并将计算结果与实验数据进行了比较 .同时得到一组能量到 50 0MeV与实验数据符合很好的光学势参数 .

Based on nuclear reaction models, i.e., the optical model, evaporation model, exciton model and the direct reaction theory, cross sections of (p, x n) reactions and residual nuclei productions for p+ 209 Bi reaction were calculated in energy region from threshold up to 300MeV and a set of proton optical potential parameters for 209 Bi up to 500MeV were obtained. The direct inelastic cross sections were calculated with the distorted wave Born approximation theory. Theoretical results show that the direct inelastic cross sections of about 550mb are reasonable.