학술논문
Electromagnetic moments of scandium isotopes and $N=28$ isotones in the distinctive $0f_{7/2}$ orbit
Document Type
Working Paper
Author
Bai, S. W.; Koszorús, Á.; Hu, B. S.; Yang, X. F.; Billowes, J.; Binnersley, C. L.; Bissell, M. L.; Blaum, K.; Campbell, P.; Cheal, B.; Cocolios, T. E.; de Groote, R. P.; Devlin, C. S.; Flanagan, K. T.; Ruiz, R. F. Garcia; Heylen, H.; Holt, J. D.; Kanellakopoulos, A.; Krämer, J.; Lagaki, V.; Maaß, B.; Malbrunot-Ettenauer, S.; Miyagi, T.; Neugart, R.; Neyens, G.; Nörtershäuser, W.; Rodríguez, L. V.; Sommer, F.; Vernon, A. R.; Wang, S. J.; Wang, X. B.; Wilkins, S. G.; Xu, Z. Y.; Yuan, C. X.
Source
Subject
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Abstract
The electric quadrupole moment of $^{49}$Sc was measured by collinear laser spectroscopy at CERN-ISOLDE to be $Q_{\rm s}=-0.159(8)$ $e$b, and a nearly tenfold improvement in precision was reached for the electromagnetic moments of $^{47,49}$Sc. The single-particle behavior and nucleon-nucleon correlations are investigated with the electromagnetic moments of $Z=21$ isotopes and $N=28$ isotones as valence neutrons and protons fill the distinctive $0f_{7/2}$ orbit, respectively, located between magic numbers, 20 and 28. The experimental data are interpreted with shell-model calculations using an effective interaction, and ab-initio valence-space in-medium similarity renormalization group calculations based on chiral interactions. These results highlight the sensitivity of nuclear electromagnetic moments to different types of nucleon-nucleon correlations, and establish an important benchmark for further developments of theoretical calculations.
Comment: Accepted by Physics Letters B (2022)
Comment: Accepted by Physics Letters B (2022)