Electromagnetic moments of scandium isotopes and N = 28 isotones in the distinctive 0f7/2 orbit
oleh: S.W. Bai, Á. Koszorús, B.S. Hu, X.F. Yang, J. Billowes, C.L. Binnersley, M.L. Bissell, K. Blaum, P. Campbell, B. Cheal, T.E. Cocolios, R.P. de Groote, C.S. Devlin, K.T. Flanagan, R.F. Garcia Ruiz, H. Heylen, J.D. Holt, A. Kanellakopoulos, J. Krämer, V. Lagaki, B. Maaß, S. Malbrunot-Ettenauer, T. Miyagi, R. Neugart, G. Neyens, W. Nörtershäuser, L.V. Rodríguez, F. Sommer, A.R. Vernon, S.J. Wang, X.B. Wang, S.G. Wilkins, Z.Y. Xu, C.X. Yuan
| Format: | Article |
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| Diterbitkan: | Elsevier 2022-06-01 |
Deskripsi
The electric quadrupole moment of 49Sc was measured by collinear laser spectroscopy at CERN-ISOLDE to be Qs=−0.159(8) eb, and a nearly tenfold improvement in precision was reached for the electromagnetic moments of 47,49Sc. 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 0f7/2 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.