The study of nucleon-nucleus elastic scattering for spherical targets amounts to solving Schrödinger equation with a given optical potential. This potential can be obtained microscopically by taking as a starting point the interaction between two nucleons. It can also be obtained in a phenomenological way by postulating the geometry of potential and fitting parameters to reproduce experimental data. Microscopic approaches show in general terms that optical potentials are nonlocal, energy-dependent, complex and dispersive. The nonlocality of the potential leads to an integro-differential equation for the wavefunction. We present here a new version of SIDES (Schrödinger Integro-Differential Equation Solver), a code developed with the participation of Jacques Raynal, extended for nonlocal potentials with first-derivative terms.

对球形目标的核-核弹性散射的研究等于在给定光势下求解薛定ding方程。以两个核子之间的相互作用为起点，可以从微观上获得这种潜力。也可以通过现象学的方法，通过假设势能的几何形状和拟合参数以重现实验数据来获得它。微观方法大体上表明，光势是非局部的，依赖能量的，复杂的和分散的。电位的非局部性导致了波函数的积分微分方程。我们在这里介绍SIDES（Schrödinger积分微分方程求解器）的新版本，该代码是在Jacques Raynal的参与下开发的，扩展为具有一阶导数项的非局部势能。