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Phys. Rev. C 74, 064312 (2006) [10 pages]

58Co: Structure of an odd-odd nucleus in the pf shell

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M. A. G. Silveira, N. H. Medina, J. R. B. Oliveira, J. A. Alcántara-Núñez, E. W. Cybulska, H. Dias, M. N. Rao, R. V. Ribas, W. A. Seale, and K. T. Wiedemann
Instituto de Física, Universidade de São Paulo, São Paulo, SP, Brazil

B. A. Brown
Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA and
National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824

M. Honma
Center for Mathematical Sciences, University of Aizu, Tsuruga, Ikki-machi, Aizu-Wakamatsu, Fukushima 965-8580, Japan

T. Mizusaki
Institute of Natural Sciences, Senshu University, Higashimita, Tama, Kawasaki, Kanagawa 214-8580, Japan

T. Otsuka
Department of Physics and Astronomy, University of Tokyo, Hongo, Tokyo 113-0033, Japan and
RIKEN, Hirosawa, Wako-shi, Saitama 351-0198, Japan

Received 2 February 2006; revised 16 August 2006; published 18 December 2006

High-spin states in the odd-odd 58Co nucleus have been studied with the fusion-evaporation reaction 51V (10B,p2n) using the γ-spectrometer Saci-Perere. Thirty-six new excited states up to spin 11+ and an excitation energy of 8.0 MeV have been observed, which are connected by 46 γ-ray transitions. Transition probabilities for 14 excited states were measured through the Doppler-shift attenuation method. The results are compared with shell-model calculations using the GXPF1 effective interaction, developed for use in the pf shell. These results were interpreted by considering particle-hole excitations with respect to the doubly magic N=Z=28 core.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.74.064312
DOI:
10.1103/PhysRevC.74.064312
PACS:
27.40.+z, 23.20.Lv, 21.10.Tg, 21.60.Cs
 
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