Occupation probabilities of shell-model orbits in the lead region

The occupation probabilities of shell-model orbits in the lead region are estimated by the addition of random-phase approximation corrections to nuclear-matter results. The occupation probabilities of single-particle states in shells just below and above the Fermi energy are found to be approx. 0.7 and 0.1, respectively. It is shown that these estimates explain the quenching of the single-particle contribution observed in many elastic and inelastic electron-scattering experiments