Microscopic Restoration of Proton-Neutron Mixed Symmetry in Weakly Collective Nuclei

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Starting from the microscopic low-momentum nucleon-nucleon interaction V{low k}, we present the first systematic shell model study of magnetic moments and magnetic dipole transition strengths of the basic low-energy one-quadrupole phonon excitations in nearly-spherical nuclei. Studying in particular the even-even N=52 isotones from 92Zr to 100Cd, we find the predicted evolution of the predominantly proton-neutron non-symmetric state reveals a restoration of collective proton-neutron mixed-symmetry structure near mid-shell. This provides the first explanation for the existence of pronounced collective mixed-symmetry structures in weakly-collective nuclei.
5 Pages, 3 figures

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Nuclear Theory, Nuclear Experiment

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http://salesiana.dossiersoluciones.com/handle/123456789/188597

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/nucl-th/0612070
 http://arxiv.org/abs/nucl-th/0612070
 Phys.Rev.C76:034325,2007
 doi:10.1103/PhysRevC.76.034325

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arXiv