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Research Highlight

Neutrons More Active than Protons in Dance Around Doubly-Magic 132Sn

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A plot of matrix elements for 136Te suggesting a prolate shape for this nucleus, with a wavefunction dominated by excited neutrons.

A novel technique was used to determine a complete set of electromagnetic moments B(E2; 0+-2+), Q(2+), and g(2+) in single experiment. This work demonstrated that experimental g(2+) and B(E2; 0+-2+) values provide a powerful and sensitive tool to distinguish between theoretical models. The experimental results indicate a prolate deformation, and a wavefunction that is dominated by excited neutrons rather than protons.