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arXiv · 1006.3608

Collectivity at N=50: 82Ge and 84Se

A. Gade·T. Baugher·D. Bazin·B. A. Brown·C. M. Campbell·T. Glasmacher·G. F. Grinyer·M. Honma·S. McDaniel·R. Meharchand·T. Otsuka·A. Ratkiewicz·J. A. Tostevin·K. A. Walsh·D. Weisshaar
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Abstract

The neutron-rich N=50 isotones 82Ge and 84Se were investigated using intermediate-energy Coulomb excitation on a 197Au target and inelastic scattering on 9Be. As typical for intermediate-energy Coulomb excitation with projectile energies exceeding 70 MeV/nucleon, only the first 2^+ states were excited in 82Ge and 84Se. However, in the inelastic scattering on a 9Be target, a strong population of the first 4^+ state was observed for 84Se, while there is no indication of a similarly strong excitation of the corresponding state in the neighboring even-even isotone 82Ge. The results are discussed in the framework of systematics and shell-model calculations using three different effective interactions.

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A. Gade, T. Baugher, D. Bazin, B. A. Brown, C. M. Campbell, T. Glasmacher, G. F. Grinyer, M. Honma, S. McDaniel, R. Meharchand, T. Otsuka, A. Ratkiewicz, J. A. Tostevin, K. A. Walsh, D. Weisshaar. 2010-06-18. Collectivity at N=50: 82Ge and 84Se. https://doi.org/10.1103/physrevc.81.064326

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