Decay of150,158Tb*nuclear systems formed in reactions induced by loosely bound6Li

Abstract

In reference to recent experiments, the collective clusterization approach is employed to investigate the dynamics of ${}^{6}\mathrm{Li}\phantom{\rule{0.16em}{0ex}}+{\phantom{\rule{0.16em}{0ex}}}^{144,152}$Sm reactions over a wide range of incident energies spread across the Coulomb barrier. In order to account for the role of deformations, the cross sections for the ${}^{6}\mathrm{Li}\phantom{\rule{0.16em}{0ex}}+{\phantom{\rule{0.16em}{0ex}}}^{152}\mathrm{Sm}\ensuremath{\rightarrow}{}^{158}$Tb${}^{*}\ensuremath{\rightarrow}{A}_{1}+{A}_{2}$ reaction have been studied using a spherical choice of fragmentation, and by considering static ${\ensuremath{\beta}}_{2i}(0)$ and dynamic ${\ensuremath{\beta}}_{2i}(T)$ quadrupole deformations within the optimum orientations ${\ensuremath{\theta}}_{i}^{\mathrm{opt}}$ approach. Furthermore, the orientation degree of freedom is shown to play an important role, and the same has been investigated by considering equatorial (compact) as well as polar (noncompact) orientational features. The role of level density parameter, barrier modification, and angular momentum dependence is duly addressed. Also, the shell closure effect and the $N/Z$ dependence of decay fragments have been explored in context of the fragmentation process of ${}^{150,158}$Tb nuclei. Finally, the incomplete fusion process (ICF) observed due to break up of loosely bound projectile ${}^{6}$Li on the deformed target ${}^{152}$Sm is worked out.