Abstract
High-spin states in the odd-odd N = Z nucleus Co-54 have been investigated by the fusion-evaporation reaction Si-28(S-32,1 alpha 1p1n)Co-54. Gamma-ray information gathered with the Ge detector array Gammasphere was correlated with evaporated particles detected in the charged particle detector system Microball and a 1 pi neutron detector array. A significantly extended excitation scheme of Co-54 is presented, which includes a candidate for the isospin T = 1, 6(+) state of the 1f(7/2)(-2) multiplet. The results are compared to large-scale shell-model calculations in the fp shell. Effective interactions with and without isospin-breaking terms have been used to probe isospin symmetry and isospin mixing. A quest for deformed high-spin rotational cascades proved negative. This feature is discussed by means of cranking calculations.
Original language | English |
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Article number | 054309 |
Pages (from-to) | - |
Number of pages | 14 |
Journal | Physical Review C |
Volume | 82 |
Issue number | 5 |
DOIs | |
Publication status | Published - 15 Nov 2010 |
Keywords
- SHELL-MODEL DESCRIPTION
- HIGH-SPIN STATES
- ROTATIONAL BANDS
- CHANNEL-SELECTION
- NI-56
- DECAY
- SPECTROSCOPY
- GAMMASPHERE