Reaction cross section studies withSi28ions

The fusion-evaporation products in the ${}_{}{}^{28}{}_{}{}^{}\mathrm{Si}$-induced reactions on ${}_{}{}^{27}{}_{}{}^{}\mathrm{Al}$ at 65-81 MeV have been studied by detecting $\gamma$ rays from the residual nuclei. Cross sections for two- and three-particle removal from the initial compound nucleus ${}_{}{}^{55}{}_{}{}^{}\mathrm{Co}$ are found to dominate. High spin states in the product nuclei have been investigated. Experimental reaction cross sections are compared with compound nucleus evaporation calculations.