Sensitivity to N/Z ratio in fragment productions for the isobaric systems 124Xe +64 Zn, 64 Ni and 124Sn +64 Ni at E/A = 35 MeV

Intermediate-Mass Fragments (IMF) statistical and dynamical emission probabilities were examinated in dissipative collisions of 124Xe+64 Zn and 64Ni at beam energy of 35 A MeV and compared with previous studies of the 124Sn+64 Ni reaction. For these isobaric systems the probability of dynamical emission enhances with increasing of the N/Z asymmetry of the entrance channel, while the cross section of statistical emission is independent from the neutron richness of the system. Therefore, the dynamical component of the IMF emission cross section shows a strong sensitivity on the isospin of the entrance channel.