中能中子与^(60)Ni反应的理论计算和分析  

Calculation and Analysis of Neutron-Induced Reactions on ^(60)Ni Below 150 MeV

作　　者：黄小龙[1] 

机构地区：[1]中国原子能科学研究院核物理研究所,北京102413

出　　处：《原子能科学技术》2008年第1期33-37,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(10305021)

摘　　要：在中子与60Ni反应的总截面、去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0.456~150 MeV范围内的一组普适的中子与60Ni反应的光学模型势参数。利用光学模型、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的中能核反应计算程序UNF和MEND,计算了中子与60Ni反应的所有截面、角分布和能谱,并将理论计算结果与实验数据和评价数据进行了分析比较。Based on the experimental data of the total,the nonelastic and the elastic cross sections and the elastic scattering angular distributions for n＋^60Ni reactions,a set of parameters for neutron optical model potential was obtained in the incident neutron energy region of 0.456-150 MeV.Then reaction cross sections,angular distributions,energy spectra,gamma-ray production cross sections and gamma-ray production energy spectra were calculated in terms of the optical model,the distorted wave Born approximation theory,the Hauser-Feshbach theory,the exciton model and the cascade mechanism inside nuclear.The results were analyzed and compared with the existing experimental data and otier evaluated data from ENBF/B-6.There are in agreement with each other within error.

关 键 词：光学模型 中能核反应 UNF程序 MEND程序 ^60Ni 

分 类 号：O571.2[理学—粒子物理与原子核物理]