Fusion Dynamics of Compound Nuclei with ACN = 166–202 Investigated Using Different Projectiles on 154Sm Target

Abstract

The effect of mass, energy, and orientation of the nuclei of projectile beams is analyzed in reference to the dynamics of heavy-ion induced reactions spread across the Coulomb barrier. A set of reactions comprising of different projectiles such as 12C, 16O, 28Si, and 48Ca interacting with 154Sm target nucleus are considered in the present analysis. The calculations are performed using the extended Wong model by taking quadrupole deformations of the interacting nuclei into account. The nuclear interaction part is determined using the Skyrme energy density formalism. The fusion cross section of the considered reactions is estimated using the conventional SIII Skyrme force, which depicts that fusion hindrance persists in the sub-barrier region and it increases with an increase in the mass of projectile. The deviation of theoretical cross sections with respect to experimental data is addressed via (i) the cold orientation approach and (ii) different forms of nuclear potentials, such as GSkI Skyrme force and the proximity potential mod Prox 88. Further, the impact of different projectile beams has also been analyzed on the corresponding barrier profile of interaction potentials, which suggests that GSkI force is suitable for the heavier symmetric reactions. Also, the relative effect of spin-orbit independent (VP) and spin-orbit dependent (VJ) on total nuclear potential (VN) is examined for SIII and GSkI Skyrme forces.