Charge radii and structural evolution in Sr, Zr, and Mo isotopes

Details Charge radii and structural evolution in Sr, Zr, and Mo isotopes Charge radii and structural evolution in Sr, Zr, and Mo isotopes

2010-06-10

arxiv.org/abs/1006.1975v1

Phys. Lett. B 691 (2010) 202

Physics

Nuclear Physics

Nuclear Theory

6 pages, 7 figures, to be published in Phys. Lett. B

Scientific paper

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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