Speaker
Description
Different decay modes of complete / incomplete fusion and pre-equilibrium [1] have been investigated in $^{12}$C+$^{116}$Sn system. The channel-by-channel fusion cross-sections of $^{126, 124}$Ba ($x$n), $^{125,123}$Cs (p$x$n), $^{123,122,121,120}$Xe ($\alpha$$x$n), $^{123, 122, 121, 120}$I ($\alpha$p$x$n) and $^{117}$Te (2$\alpha$$3$n) residues have been measured at E$_{\textrm{lab}}$ $\approx$ 55-84 MeV. Experimentally measured cross-sections have been analyzed in the framework of theoretical model codes PACE4 and EMPIRE. It has been found that the PACE4 and EMPIRE calculations fairly reproduce the independent cross-sections of evaporation residues. Interestingly, it has been found that the $\alpha$-emitting channels, contrary to established findings in reactions involving $\alpha$-cluster projectiles (e.g., $^{12}$C, $^{16}$O, etc.) at low incident energies, shows zero, or negligible contribution from incomplete fusion. To validate the findings of the excitation functions, forward ranges of recoils for reactions $^{116}$Sn($^{12}$C,$x$n), $^{116}$Sn($^{12}$C,p$x$n), $^{116}$Sn($^{12}$C,$\alpha$xn) and $^{116}$Sn($^{12}$C,$\alpha$p$x$n) have been measured at beam energy of E$_{\textrm{lab}}$ $\approx$ 78.9 MeV. This disentangles different processes in $^{12}$C + $^{116}$Sn system by analyzing full and partial linear momentum transfer, and presents the relative contributions of compound nucleus, reduced compound nucleus and precompound processes. Experimental data and its analysis suggest unique behavior of this system. A comparison between the reactions involving $^{12}$C + $^{116}$Sn and $^{12}$C + $^{118}$Sn [2] has been performed based on their neutron skin thickness. Detained results will be presented during the conference.