Role of Surface Energy Coefficient in the Fusion Reactions Induced by Halo Projectiles

Recent advancements in the radioactive-ion beams facilities around the world have enabled us to explore many new elements in the nuclear chart. Many of the nuclei predicted in the stability valley have also been confirmed experimentally. The separation energy of last nucleon decreases as we move away from line of stability and it disappears at the drip line. The quest to understand the structure of nuclei at the neutron-drip line had led to the discovery of unexpected exotic structures of halo nuclei. The study of halo nuclei provides an opportunity to examine the interaction between the neutrons in a very low density and nearly proton-free environment. In one of our earlier study, the effect of halo structure on the fusion cross sections was studied and the study revealed that the extended halo radii affect significantly the barrier heights as well as fusion probabilities. Here, we aim to study the role of surface energy coefficient in the fusion reactions induced by halo projectiles by using a proximity-based potential. Different versions of Aage Winther (AW95) potential have been used to account for different surface energy effects. The fusion reactions induced by neutron-halo (6He) and proton-halo (8B) projectiles have been analyzed.