Charge density differences near 208Pb in relativistic models.

Abstract

Charge density differences and cross-section ratios are calculated for $^{206}\mathrm{\ensuremath{-}}^{205}$Tl and $^{206}\mathrm{\ensuremath{-}}^{204}$Hg using relativistic mean-field models of deformed nuclei. Core polarization reduces the pure 3${\mathit{s}}_{1/2}$ component of the densities by about 10%, but the calculations still overpredict the experimental data. The data can be described by assigning fractional level occupancies to the nucleons near the Fermi surface; these occupancies are similar to those needed in calculations using nonrelativistic mean-field models.