STUDY OF THE FUSION-FISSION PROCESS IN THE CL-35-24 REACTION(MG)

Fusion-fission and fully energy-damped binary processes of the Cl-35+M g-24 reaction were investigated using particle-particle coincidence te chniques at a Cl-35 bombarding energy of E-lab approximate to 8 MeV/nu cleon. Inclusive data were also taken in order to determine the partia l wave distribution of the fusion process. The fragment-fragment corre lation data show that the majority of events arises from a binary-deca y process with a relatively large multiplicity of secondary light-char ged particles emitted by the two primary excited fragments in the exit channel. No evidence is observed for ternary-breakup processes, as ex pected from the systematics recently established for incident energies below 15 MeV/nucleon and for a large number of reactions. The binary- process results are compared with predictions of statistical-model cal culations. The calculations were performed using the Hauser-Feshbach m ethod, based on the available phase space at the scission point of the compound nucleus. This new method uses temperature-dependent level de nsities and its predictions are in good agreement with the presented e xperimental data, thus consistent with the fusion-fission origin of th e binary fully-damped yields.