The yrast states of the beta-stable nucleus Ni-58(28)30 have been studied u
sing the reaction Ca-40(Mg-24. alpha 2p) Ni-58 at a beam energy of 65 MeV.
Transitions in this nucleus were identified unambiguously using high-effici
ency recoil-gated gamma-ray spectra obtained from the AYEBALL gamma-ray arr
ay in conjunction with the Argonne Fragment mass analyser coupled to a spli
t anode ionization chamber. The decay scheme is presented and ii is hoped t
hat such a study will shed light on the competition between core breaking a
nd population of the g(9/2) neutron intruder orbitals in the generation of
high angular momentum states in this region.