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arXiv · 1103.4285

Shape evolution in Yttrium and Niobium neutron-rich isotopes

R. Rodriguez-Guzman·P. Sarriguren·L. M. Robledo
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Abstract

The isotopic evolution of the ground-state nuclear shapes and the systematics of one-quasiproton configurations are studied in neutron-rich odd-A Yttrium and Niobium isotopes. We use a selfconsistent Hartree-Fock-Bogoliubov formalism based on the Gogny energy density functional with two parametrizations, D1S and D1M. The equal filling approximation is used to describe odd-A nuclei preserving both axial and time reversal symmetries. Shape-transition signatures are identified in the N=60 isotopes in both charge radii and spin-parities of the ground states. These signatures are a common characteristic for nuclei in the whole mass region. The nuclear deformation and shape coexistence inherent to this mass region are shown to play a relevant role in the understanding of the spectroscopic features of the ground and low-lying one-quasiproton states. Finally, a global picture of the neutron-rich A=100 mass region from Krypton up to Molybdenum isotopes is illustrated with the systematics of the nuclear charge radii isotopic shifts.

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R. Rodriguez-Guzman, P. Sarriguren, L. M. Robledo. 2011-03-22. Shape evolution in Yttrium and Niobium neutron-rich isotopes. https://doi.org/10.1103/physrevc.83.044307

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