(n,p)激发函数一种新的半经验计算方法

A New Semiempirical Expression of Excitation Function for (n,p) Reaction

基于核反应蒸发模型和预平衡激子模型,在一些近似条件下得到了入射能量小于20MeV的(n,p)的激发函数解析半经验表达式,靶核在23≤A≤209的范围内,利用大量(n,p)反应的截面实验数据对可调参数进行了研究,得到了参数对靶核的N和Z以及中子入射能量的依赖关系,对得到的参数做了定性的解释,利用普适参数对(n,p)反应的激发函数做了预言,预言值在其误差范围内与实验数据一致。

A semiempirical expression for the excitation function for (n,p) reaction were obtained on the basis of evaporation and exciton models with the energies range up to 20 MeV. Within the nuclide of 12≤A≤209, the adjusted parameter of the semiempirical expression was investigated, the parameter is dependent on the atomic number, mass number of the target nuclide, and the energy of the incident neutron. The predictions of the excitation function for (n,p) reaction are good agreement with the experimental data.