Coincidences between light particles, evaporation residues, and complex fragments emitted in the reaction {sup 58}Ni + {sup 58}Ni at 500 MeV bombarding energy

Light particles (protons and alphas) were measured in coincidence with complex fragments (4 < Z < 10) and evaporation residues (Z > 40) using the large detector array HILI. A {sup 58}Ni beam of 500 MeV extracted from the HHIRF tandem accelerator was used to bombard a {sup 58}Ni target of 99% enrichment. A good account of the proton and alpha spectra in coincidences with the residues can be achieved only by including in the statistical model calculation the emission of complex fragments and allowing a small emission of a dinuclear configuration formed prior to fusion. The relative kinetic energy spectra between the complex fragments and the residues show a typical Coulomb peak consistent with emission from the compound nucleus and the out of plane angular correlation shows that the emission is coplanar