【摘要】 本文以Walecka模型及非线性σ模型自洽计算了¹⁶O、⁴⁰Ca的相对论微观光学势.得到的标量势和矢量势符号相反,大小约为几百MeV,与核子的质量可以相比拟.为了与非相对论光学势比较,给出了Schrodinger等价势.这个等价势在很大的能量范围（E=200MeV以下）内适用,相对论计算自然地得到较强的能量相关的自旋-轨道耦合势,与唯象分析一致.本文用自洽计算的实部势及最低级的虚部势计算了核子一核散射微分截面及极化率,得到与实验较好的符合.非线性σ模型给出合理的核的不可压缩系数,从而考虑了核的表面效应,改善了计算的光学势.更多还原

【Abstract】 The real relativistic microscopic optical pot（?）ntials for ¹⁶O and ⁴⁰Ca have been calculated self-consistently in the framework of the Walecka model and the non-linear σ model. To compare with nonrelativistic optical potentials, the Schrodinger equivalent potentials are obtained. The differential cross sections and polarizations for the nucleon-nucleus elastic scatterings also have been calculated. It is found that the optical potentials obtained in the framework of the non-linear σ model are better than that in the Walecka model.更多还原