Comparative study of Coulomb barrier parameters for deformed nuclei using double-folding model and proximity approach

In the present paper we discuss the differences between the fusion barrier parameters (the height of Coulomb barrier VB and its radius RB) computed by two methods namely; the proximity approach for coplanar and non-coplanar systems of interacting nuclei and double folding model. The minimum separation distance, s, between the deformed surfaces of interacting nuclei was determined exactly from numerical calculations and the results of Coulomb parameters were compared with previous calculations based on approximate determination of s. We considered the three interaction systems 48Ar + 238Pu, 150Nd + 150Nd and 86Kr + 180Hf and found that VB and RB, evaluated by using the proximity approach, have too strong Φ-dependence for the system 150Nd + 150Nd at relative orientation angles of the nuclei symmetry axes θ1=θ2=90°.