基于耦合道Gamow壳模型计算^(17)O和^(17)F的能谱以及^(16)O(p,p)反应的微分散射截面  

Calculations of the ^(17)O and ^(17)F Spectra and ^(16)O(p,p)Reaction Cross Sections in the Coupled-channel Gamow Shell Model

作　　者：Nicolas Michel Nicolas Michel(Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China)

机构地区：[1]中国科学院近代物理研究所,兰州730000

出　　处：《原子核物理评论》2020年第3期586-594,共9页Nuclear Physics Review

基　　金：国家自然科学基金资助项目(11435014,11975282)。

摘　　要：利用耦合道Gamow壳模型计算了^(17)O和^(17)F的低激发能谱以及^(16)O(p,p)反应的低能弹性散射截面。结果表明,^(17)O和^(17)F中非束缚共振态能级的核子发射宽度的计算需要合理地考虑连续态耦合效应。计算得到的^(17)O和^(17)F的低激发能谱以及^(16)O(p,p)反应的低能弹性散射激发函数都与实验数据吻合较好。这说明基于现实核力的计算可更好地描述^(16)O(p,p)反应的低能弹性散射截面。We apply the coupled-channel Gamow shell model to calculate the spectra of^(17)O and^(17)F,as well as^(16)O(p,p)elastic cross sections at low energies.It is shown that continuum coupling is necessary to account for the particle-emission width of the unbound eigenstates of^(17)O and^(17)F.The low-lying spectrum of^(17)O and^(17)F and^(16)O(p,p)excitations functions are in fair agreement with experimental data.Nevertheless,it is also shown that the use of a realistic nuclear Hamiltonian is needed to have an optimal reproduction of^(16)O(p,p)elastic cross sections in the low-energy region.

关 键 词：A≈20 低激发态能谱 核子发射宽度 弹性散射 耦合道Gamow壳模型 

分 类 号：O571[理学—粒子物理与原子核物理]