Charge radii and structural evolution in Sr,Zr, and Mo isotopes |
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Authors: | R. Rodrí guez-Guzmá n,P. Sarriguren,L.M. Robledo,S. Perez-Martin |
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Affiliation: | 1. Instituto de Estructura de la Materia, CSIC, Serrano 123, E-28006 Madrid, Spain;2. Departamento de Física Teórica, Módulo 15, Universidad Autónoma de Madrid, 28049 Madrid, Spain |
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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 studied within a self-consistent mean-field approximation based on the D1S–Gogny interaction. Neutron separation energies and charge radii are calculated and compared with available data. A correlation between a shape transition and a discontinuity in those observables is found microscopically. 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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Keywords: | Mean field approach Nuclear shape transitions Charge radii isotope shifts |
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