A1 Journal article (refereed)
Universal trend of charge radii of even-even Ca–Zn nuclei (2022)

Kortelainen, M., Sun, Z., Hagen, G., Nazarewicz, W., Papenbrock, T., & Reinhard, P.-G. (2022). Universal trend of charge radii of even-even Ca–Zn nuclei. Physical Review C, 105(2), Article L021303. https://doi.org/10.1103/PhysRevC.105.L021303

JYU authors or editors

Publication details

All authors or editors: Kortelainen, Markus; Sun, Zhonghao; Hagen, Gaute; Nazarewicz, Witold; Papenbrock, Thomas; Reinhard, Paul-Gerhard

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2022

Publication date: 04/02/2022

Volume: 105

Issue number: 2

Article number: L021303

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevC.105.L021303

Publication open access: Not open

Publication channel open access: 

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/80207

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2111.12464

Abstract

Radii of nuclear charge distributions carry information about the strong and electromagnetic forces acting inside the atomic nucleus. Whereas the global behavior of nuclear charge radii is governed by the bulk properties of nuclear matter, their local trends are affected by quantum motion of proton and neutron nuclear constituents. The measured differential charge radii δ⟨r2c⟩ between neutron numbers N=28 and N=40 exhibit a universal pattern as a function of n=N–28 that is independent of the atomic number. Here we analyze this remarkable behavior in even-even nuclei from calcium to zinc using two state-of-the-art theories based on quantified nuclear interactions: the ab initio coupled cluster theory and nuclear density functional theory. Both theories reproduce the smooth rise of differential charge radii and their weak dependence on the atomic number. By considering a large set of isotopic chains, we show that this trend can be captured by just two parameters: the slope and curvature of δ⟨r2c⟩(n). We demonstrate that these parameters show appreciable model dependence, and the statistical analysis indicates that they are not correlated with any single model property, i.e., they are impacted by both bulk nuclear properties as well as shell structure.

Keywords: nuclear physics; density functional theory

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Ministry reporting: Yes

VIRTA submission year: 2022

JUFO rating: 2