物理学报2026，Vol.75Issue(9)：133-138,6.DOI:10.7498/aps.75.20251469
238U核子散射数据的理论计算
Theoretical calculation of nucleon scattering data on 238U
摘要
Abstract
The investigation of nuclear reaction data for deformed nuclei(especially well-deformed nuclei)is self-evident in its significance.As the most major uranium isotope and actinide,the natural abundance of 238U is as high as 99.27％,and in the important military material depleted uranium,238U accounts for more than 99.8％.238U plays an important role in nuclear science and technology fields such as weapons,military,and energy.Therefore,the theoretical calculation and research of 238U nucleon scattering data have significant theoretical value and application prospects.For spherical nuclei(or near-spherical nuclei),the elastic scattering data can be calculated using the spherical optical potential,while for nucleon scattering of deformed nuclei(or even well-deformed nuclei),a coupled-channels optical model needs to be used for analysis and calculation.The coupled-channels optical model no longer uses a spherical optical potential.Moreover,the nuclear deformation cannot be ignored and needs to be described in the rotator structure model.The low-lying collective levels of 238U are well reproduced using the soft-rotator model.Using the coupled-channels optical model,a dispersive coupled-channels optical potential for 238U is obtained.The derived potential shows a good description of nucleon-nucleus scattering data up to 200 MeV,including neutron total cross sections,nucleon elastic scattering angular distributions,nucleon inelastic scattering angular distributions,nucleon elastic analyzing powers,and nucleon inelastic analyzing powers.关键词
耦合道光学模型/色散光学势/核子散射Key words
coupled channel optical model/dispersive optical potential/nucleon scattering引用本文复制引用
赵岫鸟,杜文青..238U核子散射数据的理论计算[J].物理学报,2026,75(9):133-138,6.基金项目
辽宁省自然科学基金计划博士科研启动项目(批准号:2025-BS-0824)资助的课题. Project supported by the Doctoral Scientific Research Staring Foundation of Liaoning Province,China(Grant No.2025-BS-0824). （批准号:2025-BS-0824）
