SWANLOP : Scattering waves off nonlocal optical potentials in the presence of Coulomb interactions

Abstract

We introduce the package SWANLOP to calculate scattering waves and corresponding observables for nucleon elastic collisions off spin-zero nuclei. The code is capable of handling local and nonlocal optical potentials superposed to long-range Coulomb interaction. Solutions to the implied Schrödinger integro-differential equation are obtained by solving an integral equation of Lippmann-Schwinger type for the scattering wavefunctions, $\psi ={\varphi }_C+G_C{U}_S\psi$, providing and exact treatment to the Coulomb force [Phys. Lett. B 789, 256 (2019)]. The package has been developed to handle potentials either in momentum or coordinate representations, providing flexible options under each of them. The code is fully self-contained, being dimensioned to handle any $A\ge 4$ target for nucleon beam energies of up to 1.1 GeV. Accuracy and benchmark applications are presented and discussed.

Accepted for publication in Computer Physics Communications. Code available at CPC web site or by request to HFA. PLB page number corrected in Abstract

References in corpus (8)

• Optical potential from first principles
• Elastic proton scattering of medium mass nuclei from coupled-cluster theory
• Microscopic positive-energy potential based on Gogny interaction
• Self-consistent microscopic description of neutron scattering by ${}^{16}$O based on the continuum particle-vibration coupling method
• Transfer reaction code with nonlocal interactions
• Numerical treatment of long-range Coulomb potential with Berggren bases
• Surface-peaked medium effects in the interaction of nucleons with finite nuclei
• A new treatment of nonlocality in scattering process

Cited by in corpus (8)

• Optical potentials for the rare-isotope beam era
• Impact of Three-Body Forces on Elastic Nucleon-Nucleus Scattering Observables
• Microscopic optical potential from the relativistic Brueckner-Hartree-Fock theory: Proton-nucleus scattering
• On the separability of microscopic optical model potentials and emerging bell-shape Perey-Buck nonlocality
• Ultraviolet suppression and nonlocality in optical model potentials for nucleon-nucleus scattering
• Microscopic optical potentials from a Greens function approach
• Existence of the transfer matrix for a class of nonlocal potentials in two dimensions
• Elastic proton scattering off non-zero spin nuclei