INTERMEDIATE-MASS FRAGMENTS EMISSION IN THE REACTION 96 MEV F-19 ON C-12

The energy distributions of the complex fragments (3 less than or equa l to Z less than or equal to 11) emitted in the reaction F-19(96 MeV) + C-12 have been measured in the angular range 10 degrees less than or equal to theta(lab)60 degrees. The lighter fragments (3 less than or equal to Z less than or equal to 6) have been found to be emitted pred ominantly due to the asymmetric fissionlike decay of the compound nucl eus, whereas the heavier fragments (Z greater than or equal to 10) hav e been identified as evaporation residues. The shapes of the fragment energy distributions, as well as the total elemental yields for the li ghter fragments (3 less than or equal to Z less than or equal to 6) ha ve been explained fairly well by the asymmetric binary fission model. The binary fragment yields from the reaction F-19(96 MeV) + C-12 have been compared with those obtained in alpha(60 MeV) + Al-27 and Li-7(47 MeV) + Mg-24 reactions, all producing the same composite P-31 at Same excitation energy. No significant entrance channel asymmetry dependen ce has been observed.