High-spin states inCo56,58with theNi58,60(d,α)Co56,58reaction

Abstract
Angular distributions of the Ni58,60(d,α)Co56,58 reaction at 80 MeV bombarding energy have been measured for strongly populated states in Co56,58 up to an excitation energy of 5.3 MeV. Besides the transitions to the known 7+ state at 2.283 MeV and 6+ state at 2.372 MeV in Co56, states at 3.54(2) and 4.44(3) MeV in Co56, and at 2.69(2), 2.94(2), 3.78(2), and 4.79(3) MeV in Co58 are strongly excited by characteristic L=6 angular distributions. This limits the Jπ values for these states to (5+), 6+, or 7+. The experimental angular distributions are compared with distorted-wave Born approximation calculations based on two sets of recent shell model wave functions, calculated in the same configuration space but with different effective residual interactions.