Nature of excited 0+ states in 158Gd described by the projected shell model

Abstract

Excited 0+ states are studied in the framework of the projected shell model, aiming at understanding the nature of these states in deformed nuclei in general, and the recently observed 13 excited 0+ states in 158Gd in particular. The model, which contains projected two- and four-quasiparticle states as building blocks in the basis, is able to reproduce reasonably well the energies for all the observed 0+ states. The obtained B(E2) values however tend to suggest that these 0+ states might have a mixed nature of quasiparticle excitations coupled to collective vibrations.

arXiv comment5 pages, 4 figures, and 1 table, revised with new title

References in corpus (3)

• Nuclear Ground-State Masses and Deformations
• Backbending in Dy isotopes within the Projected Shell Model
• Multi-Shell Shell Model for Heavy Nuclei

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