Calculation of nucleon densities in calcium, nickel, and molybdenum isotopes on the basis of the dispersive optical model

Abstract

The radial distributions of proton and neutron densities in the even–even isotopes ⁴⁰⁻⁷⁰Cа and ⁴⁸⁻⁷⁸Ni and the analogous distributions of neutron densities in the even–even isotopes ⁹²⁻¹³⁸Mo were calculated on the basis of the mean-fieldmodel involving a dispersive optical potential. The respective root-mean-square radii and neutron-skin thicknesses were determined for the nuclei under study. In N > 40 calcium isotopes, the calculated neutron root-mean-square radius exhibits a fast growth with increasing N, and this is consistent with the prediction of the neutron-halo structure in calcium isotopes near the neutron drip line.