Fissionlike exit channel in the 5.8 MeV/u 84Kr on 24Mg reaction

Fissionlike (FL) phenomena for systems around mass 100 have been shown previously interpretable in terms of dynamical fission. This appears to be dependent on the entrance channel mass asymmetry. We have studied the fissionlike exit channel in the 84Kr+24Mg reaction at E(Kr)=5.8 MeV/u. This energy is just above the threshold of fission, so that a clear separation between the Deep Inelastic Component (DIC) and the FL one can be achieved. The bombarding energy corresponds to the same excitation energy in the composite system 108Cd (E*=101 MeV) as in the 32S (158 MeV) on 76Ge reaction we studied earlier and for which fusion-evaporation along with fission-like contributions were measured. The width of the FL distribution confirms the previously observed dependence with the mass asymmetry in the entrance channel which is consistent with the extra push model