A1 Journal article (refereed)
Impact of Nuclear Deformation and Pairing on the Charge Radii of Palladium Isotopes (2022)

Geldhof, S., Kortelainen, M., Beliuskina, O., Campbell, P., Caceres, L., Cañete, L., Cheal, B., Chrysalidis, K., Devlin, C. S., de Groote, R. P., de Roubin, A., Eronen, T., Ge, Z., Gins, W., Koszorus, A., Kujanpää, S., Nesterenko, D., Ortiz-Cortes, A., Pohjalainen, I., . . . Sommer, F. (2022). Impact of Nuclear Deformation and Pairing on the Charge Radii of Palladium Isotopes. Physical Review Letters, 128(15), Article 152501. https://doi.org/10.1103/PhysRevLett.128.152501

JYU authors or editors

Publication details

All authors or editors: Geldhof, S.; Kortelainen, M.; Beliuskina, O.; Campbell, P.; Caceres, L.; Cañete, L.; Cheal, B.; Chrysalidis, K.; Devlin, C. S.; de Groote, R. P.; et al.

Journal or series: Physical Review Letters

ISSN: 0031-9007

eISSN: 1079-7114

Publication year: 2022

Publication date: 12/04/2022

Volume: 128

Issue number: 15

Article number: 152501

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevLett.128.152501

Publication open access: Not open

Publication channel open access:

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/81803

Abstract

The impact of nuclear deformation can been seen in the systematics of nuclear charge radii, with radii generally expanding with increasing deformation. In this Letter, we present a detailed analysis of the precise relationship between nuclear quadrupole deformation and the nuclear size. Our approach combines the first measurements of the changes in the mean-square charge radii of well-deformed palladium isotopes between A=98 and A=118 with nuclear density functional calculations using Fayans functionals, specifically Fy(std) and Fy(Δr,HFB), and the UNEDF2 functional. The changes in mean-square charge radii are extracted from collinear laser spectroscopy measurements on the 4d95s 3D3→4d95p3P2 atomic transition. The analysis of the Fayans functional calculations reveals a clear link between a good reproduction of the charge radii for the neutron-rich Pd isotopes and the overestimated odd-even staggering: Both aspects can be attributed to the strength of the pairing correlations in the particular functional which we employ.

Keywords: nuclear physics; palladium; isotopes

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Ministry reporting: Yes

Reporting Year: 2022

JUFO rating: 3