Effects of velocity-dependent terms in the Skyrme functional on fusion barrier

The Skyrme energy density functional (EDF) has been applied to the study of entrance barriers for fusion reactions. The nucleus–nucleus interaction potentials are calculated in a double-folding form, utilizing the nucleon density distributions derived from the Skyrme EDFs. It is shown that the altering the velocity-dependent terms in the Skyrme EDF leads to a noticeable improvement in the description of the location of the Coulomb barrier in its maximum. Based on the height of Coulomb barrier obtained, a new set of parameters for the Skyrme interaction has been proposed.