The Dominance of Proton/Neutron Evaporation Exit-Channel in a Fusion-Evaporation Reaction: The Effect of Target Nuclear Ratio (N/Z)

Cross section of different evaporation residue have been calculated in 112Sn+16O (Neuron/Proton (N/Z) of the 112Sn target is 1.24) and124Sn+16O reaction (N/Z of the 124Sn is 1.48) with beam energy of 80 MeV using statistical model calculation code PACE4. These calculations predicts that the proton emission channels are predicted to be dominant when the N/Z ratio is small (i.e in the first reaction) whereas the neutron emission outgoing channels dominant in the second reaction when N/Z is large. Experimental phenomenon also revealed the fact that in order to populate the proton or neutron reach nucleus we have to choose the target material accordingly.

The systematics of the (n, 2n) cross section (the Csikai–Peto effect)

The Csikai–Peto effect has been re-evaluated by a statistical-model calculation method. Agreement and disagreement of the theory with the Csikai–Peto effect are analyzed in the light of the possible underlying mechanism, which in some aspects is close to that of prompt fission neutron emission. Future work related to the subject is proposed.