Microscopic understanding for the simplicity of the quadrupole moments newly observed in Cd isotopes

2013/11/13 by P. W. Zhao, S. Q. Zhang, Zhao, P. W. +3
Physics and Astronomy · #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th) #nucl-ex #nucl-th

paper · pdf · doi:10.48550/arxiv.1311.2991

10 pages, 3 figures

arxiv created 2013/11/13 · arxiv updated 2013/11/14

Abstract

The simplicity in the nuclear quadrupole moments reported recently in ^107-129Cd, i.e., a linear increase of the 11/2^- quadrupole moments, is investigated microscopically with the covariant density functional theory. Using the newly developed functional PC-PK1, the quadrupole moments as well as their linear increase tendency with the neutron number are excellently reproduced without any \it ad hoc parameters. The core polarization is found to be very important and contributes almost half of the quadrupole moments. The simplicity of the linear increase is revealed to be due to the pairing correlation which smears out the abrupt changes induced by the single-particle shell structure.

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