Nuclear structure studies close to Z≈N≈50

The nuclei approaching the neutron and proton major shell closures at N = Z = 50 provide a unique opportunity to study interplay between the single particle and collective degrees of freedom and influence of the valence orbitals on deformation. Theoretical interpretation of band structures observed in the nuclei approaching major shell closures at N = Z = 50 have revealed diversity in the deformation-generating mechanisms. The proton particle-hole excitations across the major shell gap are energetically possible due to the strong proton-pair correlations and proton-neutron interaction between the spin-orbit partner orbitals