Abstract
Tensor analyzing powers, T 20, of outgoing α-particles in the 58Ni( d , α) 56Co reaction at detection angles near 0° have been measured for excited states in 56Co for beam energies of 6.75, 7.0, 7.5, 9.0 and 9.5 MeV. Thirty-seven spin-parity combinations for 56Co excited states have been deduced. Previous J π ambiguities for 11 of these states have been eliminated, and results in conflict with existing assignments for the levels at 3.235 and 3.378 MeV have been obtained. A search for 0 + states was carried out from angular distribution measurements at forward angles of the unpolarized (d, α) reaction. The combined results from this and previous experiments were found to be in reasonable agreement with calculated level schemes.
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