A1 Journal article (refereed)
Charge Radii of 55,56Ni Reveal a Surprisingly Similar Behavior at N=28 in Ca and Ni Isotopes (2022)

Sommer, F., König, K., Rossi, D. M., Everett, N., Garand, D., de Groote, R. P., Holt, J. D., Imgram, P., Incorvati, A., Kalman, C., Klose, A., Lantis, J., Liu, Y., Miller, A. J., Minamisono, K., Miyagi, T., Nazarewicz, W., Nörtershäuser, W., Pineda, S. V., . . . Teigelhöfer, A. (2022). Charge Radii of 55,56Ni Reveal a Surprisingly Similar Behavior at N=28 in Ca and Ni Isotopes. Physical Review Letters, 129(13), Article 132501. https://doi.org/10.1103/PhysRevLett.129.132501

JYU authors or editors

Publication details

All authors or editors: Sommer, Felix; König, Kristian; Rossi, Dominic M.; Everett, Nathan; Garand, David; de Groote, Ruben P.; Holt, Jason D.; Imgram, Phillip; Incorvati, Anthony; Kalman, Colton; et al.

Journal or series: Physical Review Letters

ISSN: 0031-9007

eISSN: 1079-7114

Publication year: 2022

Publication date: 23/09/2022

Volume: 129

Issue number: 13

Article number: 132501

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevLett.129.132501

Publication open access: Not open

Publication channel open access: 

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/83764

Publication is parallel published: https://arxiv.org/abs/2210.01924

Abstract

Nuclear charge radii of 55,56Ni were measured by collinear laser spectroscopy. The obtained information completes the behavior of the charge radii at the shell closure of the doubly magic nucleus 56Ni. The trend of charge radii across the shell closures in calcium and nickel is surprisingly similar despite the fact that the 56Ni core is supposed to be much softer than the 48Ca core. The very low magnetic moment μ(55Ni)=−1.108(20) μN indicates the impact of M1 excitations between spin-orbit partners across the N,Z=28 shell gaps. Our charge-radii results are compared to ab initio and nuclear density functional theory calculations, showing good agreement within theoretical uncertainties.

Keywords: nuclear physics; nickel; calcium

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2022

JUFO rating: 3