The yields of gamma rays from evaporation residues following the fusion of ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ + ${}_{}{}^{28}{}_{}{}^{}\mathrm{Si}$ have been measured over the energy range 50-65 MeV in a search for structure similar to that found in the backward angle elastic scattering of this system. No such structure is seen at a level of about 4% of the total fusion cross section.

[NUCLEAR REACTIONS ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ + ${}_{}{}^{28}{}_{}{}^{}\mathrm{Si}$ fusion, measured $\sigma \mathrm{}(E,A,Z)\mathrm{}$.]

• Received 22 August 1979

DOI:https://doi.org/10.1103/PhysRevC.21.175