Mean field for the p+90Zr system in the energy range −60 MeV<E<+65 MeV and single-particle features of proton states in 90Zr from a dispersive optical-model analysis

Abstract

Data on the scattering of protons with energies 5 MeV<E<65 MeV by 90Zr nuclei and data on the energies of proton particle and hole levels in the A+1 and A−1 systems with A=90 are analyzed within the dispersive optical model. The parameters of the mean proton field for 90Zr are determined in the energy range −60 MeV<E<+65 MeV. The predicted single-particle features of the levels (root-mean-square radii of orbits, occupation numbers, spread widths, spectroscopic factors, and spectral functions) comply well with experimental data obtained in (d, 3He), (3He, d), (n, d), and (d, n) reactions for levels near the Fermi surface and in (e, e′p) and (p, 2p) reactions for deep levels.