Nuclear charge radii of Zn62-80 and their dependence on cross-shell proton excitations

Xie, L, Yang, XF, Wraith, C, Babcock, C, Bieron, J, Billowes, J, Bissell, ML, Blaum, K, Cheal, B, Filippin, L
et al (show 21 more authors) (2019) Nuclear charge radii of Zn62-80 and their dependence on cross-shell proton excitations. PHYSICS LETTERS B, 797. p. 134805.

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Nuclear charge radii of 62−80Zn have been determined using collinear laser spectroscopy of bunched ion beams at CERN-ISOLDE. The subtle variations of observed charge radii, both within one isotope and along the full range of neutron numbers, are found to be well described in terms of the proton excitations across the Z=28 shell gap, as predicted by large-scale shell model calculations. It comprehensively explains the changes in isomer-to-ground state mean square charge radii of 69−79Zn, the inversion of the odd-even staggering around N=40 and the odd-even staggering systematics of the Zn charge radii. With two protons above Z=28, the observed charge radii of the Zn isotopic chain show a cumulative effect of different aspects of nuclear structure including single particle structure, shell closure, correlations and deformations near the proposed doubly magic nuclei, 68Ni and 78Ni.

Item Type: Article
Uncontrolled Keywords: Zinc, Nuclear charge radii, Shell closure, Nuclear deformation, Correlations
Depositing User: Symplectic Admin
Date Deposited: 03 Apr 2020 10:46
Last Modified: 18 Jan 2023 23:56
DOI: 10.1016/j.physletb.2019.134805
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