Charge Radii of Ni 55,56 Reveal a Surprisingly Similar Behavior at N=28 in Ca and Ni Isotopes

Sommer F, König K, Rossi DM, Everett N, Garand D, De Groote RP, Holt JD, Imgram P, Incorvati A, Kalman C, Klose A, Lantis J, Liu Y, Miller AJ, Minamisono K, Miyagi T, Nazarewicz W, Nörtershäuser W, Pineda SV, Powel R, Reinhard PG, Renth L, Romero-Romero E, Roth R, Schwenk A, Sumithrarachchi C, Teigelhöfer A (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Physical Review Letters American Physical Society

Book Volume: 129

Article Number: 132501

Journal Issue: 13

DOI: 10.1103/PhysRevLett.129.132501

Abstract

Nuclear charge radii of Ni55,56 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 Ni56. The trend of charge radii across the shell closures in calcium and nickel is surprisingly similar despite the fact that the Ni56 core is supposed to be much softer than the Ca48 core. The very low magnetic moment μ(Ni55)=-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.

Authors with CRIS profile

Paul-Gerhard Reinhard Naturwissenschaftliche Fakultät

Involved external institutions

Michigan State University US United States (USA) (US) Technische Universität Darmstadt DE Germany (DE) University of Jyväskylä / Jyväskylän yliopisto FI Finland (FI) Triumf CA Canada (CA) Augustana University US United States (USA) (US) Oak Ridge National Laboratory US United States (USA) (US)

How to cite

APA:

Sommer, F., König, K., Rossi, D.M., Everett, N., Garand, D., De Groote, R.P.,... Teigelhöfer, A. (2022). Charge Radii of Ni 55,56 Reveal a Surprisingly Similar Behavior at N=28 in Ca and Ni Isotopes. Physical Review Letters, 129(13). https://dx.doi.org/10.1103/PhysRevLett.129.132501

MLA:

Sommer, Felix, et al. "Charge Radii of Ni 55,56 Reveal a Surprisingly Similar Behavior at N=28 in Ca and Ni Isotopes." Physical Review Letters 129.13 (2022).

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