Cu charge radii reveal a weak sub-shell effect at N=40

Bissell, ML, Carette, T, Flanagan, KT, Vingerhoets, P, Billowes, J, Blaum, K, Cheal, B, Fritzsche, S, Godefroid, M, Kowalska, M
et al (show 5 more authors) (2016) Cu charge radii reveal a weak sub-shell effect at N=40. PHYSICAL REVIEW C, 93 (6).

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Collinear laser spectroscopy on Cu58-75 isotopes was performed at the CERN-ISOLDE radioactive ion beam facility. In this paper we report on the isotope shifts obtained from these measurements. State-of-the-art atomic physics calculations have been undertaken in order to determine the changes in mean-square charge radii δ(r2)A,A′ from the observed isotope shifts. A local minimum is observed in these radii differences at N=40, providing evidence for a weak N=40 sub-shell effect. However, comparison of δ(r2)A,A′ with a droplet model prediction including static deformation deduced from the spectroscopic quadrupole moments, points to the persistence of correlations at N=40.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 07 Jul 2016 09:39
Last Modified: 19 Jan 2023 07:34
DOI: 10.1103/PhysRevC.93.064318
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