The effects of triaxial deformations in the structure of the 2 (1)+ transition charge density in 58Ni

Abstract

Inelastic electron scattering cross sections have been measured up to a momentum transfer q=3.9 fm −1, determining very precisely the transition charge density of the first excited 2 (1) + state of 58Ni. The results have been interpreted in a fully self-consistent theoretical treatment for both the ground state and the 2 (1) + transition charge density of 58Ni. The model applied is a collective description where the dynamics of the motion induces a non-zero deformation with nearly maximum triaxiality ( γ=30°). It is found that an adjustment of the collective wave function is needed to reproduce the measured transition charge density.