Abstract
The evolution of the ground‐state nuclear shapes in neutron‐rich Sr, Zr, and Mo isotopes, including both even‐even and odd‐A nuclei, is discussed within the mean‐field approximation based on the Gogny‐D1S Gogny Energy Density Functional. Calculations for neutron separation energies and charge radii are presented and compared with available data. A correlation between a shape transition and a discontinuity in those observables is found within our microscopic framework. It is shown that, while in Sr and Zr isotopes the steep behavior observed in the isotopic dependence of the charge radii is a consequence of a sharp prolate‐oblate transition, the smooth behavior found in Mo isotopes has its origin in an emergent region of triaxiality.
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