Abstract
The body of experimental measurements of intermediate-energy reactions that remove a single nucleon from a secondary beam of neutron-or proton-rich nuclei continues to grow. These data have been analysed consistently using an approximate, eikonal-model treatment of the reaction dynamics combined with appropriate shell-model descriptions of the projectile initial state, the bound final states spectrum of the reaction residue and single-particle removal strengths computed from their wave-function overlaps. The systematics of the ratio Rs of the measured inclusive cross-section to all bound final states and the calculated cross-section to bound shell-model states – in different regions of the nuclear chart and involving both very weakly-bound and strongly-bound valence nucleons – is important in relating the empirically deduced orbital occupancies to those from the best available shell-model predictions. Importantly, several new higher-energy measurements, for which the sudden-approximation aspect of the dynamical description is placed on an even stronger footing, now supplement the previously-analysed measurements. These additional data sets are discussed. Their Rs values are shown to conform to and reinforce the earlier-observed systematics, with no indication that the approximately linear reduction in Rs with increasing nucleon separation energy is a consequence of a breakdown of the sudden approximation.