Electromagnetic moments of scandium isotopes and $N=28$ isotones in the distinctive $0f_{7/2}$ orbit
| Autor: | 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. |
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| Rok vydání: | 2022 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | 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) |
| Databáze: | arXiv |
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