New Results on Excited States in the one-particle one-hole nucleus 56Co measured with MINIBALL detectors.

The non-yrast states of the odd-odd nucleus ⁵⁶Co have been investigated by studying the γ-rays induced in the predominantly fusion-evaporation reaction ⁵⁶Fe(p,n γ)⁵⁶Co at an incident energy of 10 MeV. The γ-rays were measured in-beam with four high-resolution MINIBALL-triple germanium (Ge) detectors. The experiment provided excellent data in γ-γ coincidences. The complex level scheme of ⁵⁶Co was constructed mainly based on the analysis of these γ-γ coincidences. The angular distributions of the γ-rays were also analysed and allowed us to assign spin-parity values to most of the excited states in this nucleus. Despite the extensive work previously done studying the ⁵⁶Co nucleus, the analysis presented in this work has resulted in a large improvement in the knowledge of its structure. [ABSTRACT FROM AUTHOR]