Surprising Charge-Radius Kink in the Sc Isotopes at N=20

König K, Fritzsche S, Hagen G, Holt JD, Klose A, Lantis J, Liu Y, Minamisono K, Miyagi T, Nazarewicz W, Papenbrock T, Pineda SV, Powel R, Reinhard PG (2023)

Publication Type: Journal article

Publication year: 2023


Book Volume: 131

Pages Range: 102501-

Journal Issue: 10

DOI: 10.1103/PhysRevLett.131.102501


Charge radii of neutron deficient ^{40}Sc and ^{41}Sc nuclei were determined using collinear laser spectroscopy. With the new data, the chain of Sc charge radii extends below the neutron magic number N=20 and shows a pronounced kink, generally taken as a signature of a shell closure, but one notably absent in the neighboring Ca, K, and Ar isotopic chains. Theoretical models that explain the trend at N=20 for the Ca isotopes cannot reproduce this puzzling behavior.

Authors with CRIS profile

Involved external institutions

How to cite


König, K., Fritzsche, S., Hagen, G., Holt, J.D., Klose, A., Lantis, J.,... Reinhard, P.-G. (2023). Surprising Charge-Radius Kink in the Sc Isotopes at N=20. Physical Review Letters, 131(10), 102501-.


König, Kristian, et al. "Surprising Charge-Radius Kink in the Sc Isotopes at N=20." Physical Review Letters 131.10 (2023): 102501-.

BibTeX: Download