Strong Enhancement of Subbarrier Fusion due to Negative Hexadecapole Deformation

Abstract
Within a modified barrier penetration model the fusion cross section for O816 + W74184 is calculated at subbarrier energies. It is shown that nuclei with positive quadrupole moments and large negative hexadecapole moments have enhanced fusion cross sections over elongated systems only. Fusion measurements with such systems will provide a definitive answer to the question of deformation effects on subbarrier fusion.