Exploring the influence of entrance channel on neutron multiplicity for ²¹²Rn^∗

The effect of the entrance channel and neutron shell closure (N = 126) on the pre-scission neutron emission of ²¹²Rn is investigated using available experimental data from EXFOR and theoretical calculations. It is found that the entrance channel plays a vital role in nuclear dissipation. Further, shell closure effects on neutron emission are also investigated as a function of excitation energy and its dependence on the entrance channel. Our study on the effects of entrance channel mass asymmetry (α) shows that the pre-scission neutron multiplicity (ν_pre) changes when the projectile and target combine to form the same compound nucleus (CN), which is shell closed. In addition, we have observed variations in the ν_pre when calculating the N/Z ratio near the shell closure which has not been observed.