, 48:105,
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Date: 30 Jul 2012

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 \(\ensuremath 3/2^{+}\) 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 \(\ensuremath 2^{+}\) 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 \(\ensuremath d_{5/2}\) and \(\ensuremath g_{7/2}\) single-neutron states.

Communicated by R. Krücken