Coulomb excitation of 107Sn

Abstract

The radioactive isotope 107Sn was studied using Coulomb excitation at the REX-ISOLDE facility at CERN. This is the lightest odd-Sn nucleus examined using this technique. The reduced transition probability of the lowest-lying 3/2+ state was measured and is compared to shell-model predictions based on several sets of single-neutron energies relative to 100Sn. Similar to the transition probabilities for the 2+ states in the neutron-deficient even-even Sn nuclei, the measured value is underestimated by shell- model calculations. Part of the strength may be recovered by considering the ordering of the d5/2 and g7/2 single-neutron states. © The Author(s) 2012.