Gross structure in γ-ray yields following the 16O + 12C reaction

The γ-ray yield of discrete transitions from evaporation residues formed in the reaction ¹⁶O + ¹²C has been measured between E_{c.m. = 6 and 31 MeV}. Data for a backed and self-supporting target were compared to check the consistency of the observed results. Channels in which α-particles are emitted carry most of the oscillatory structure which was previously observed for the total fusion cross section. Relative yields of the different evaporation channels can be reproduced by statistical model calculations. Optical model calculations with a parity-dependent exchange contribution reproduce the periodicity of the gross structure but underestimate the magnitude of the oscillations.