Microscopic insights into the structure of even-even 144−148Ce isotopes

A comprehensive analysis is done to study the structural evolution and triaxial deformation in the even-even ^144−148Ce isotopes using Triaxial Projected Shell Model (TPSM) approach. A thorough investigation of the yrast and γ-band explains the shape transition and presence of gamma collectivity in these neutron rich nuclei. Various observables and phenomena like $R_{4/2}$ ratios, odd-even staggering patterns in γ-bands, shape invariants, reduced transition probabilities, g-factors etc. have been calculated and found to be reasonably consistent with the available experimental data. Also, these results reveal a progressive shape evolution from γ-soft towards axially symmetric rotor at N=90. This study enhances our understanding of nuclear deformation mechanisms in this critical mass region by revealing the structural changes driven by multiquasiparticle configurations.