| Title: |
Electromagnetic moments of the odd-mass nickel isotopes 59−67 Ni |
| Authors: |
Müller, P.; Kaufmann, S.; Miyagi, T.; Billowes, J.; Bissell, M.; Blaum, K.; Cheal, B.; Garcia Ruiz, R.; Gins, W.; Gorges, C.; Heylen, H.; Kanellakopoulos, A.; Malbrunot-Ettenauer, S.; Neugart, R.; Neyens, G.; Nörtershäuser, W.; Ratajczyk, T.; Rodríguez, L.; Sánchez, R.; Sailer, S.; Schwenk, A.; Wehner, L.; Wraith, C.; Xie, L.; Xu, Z.; Yang, X.; Yordanov, D. |
| Source: |
Physics Letters B |
| Publication Year: |
2024 |
| Collection: |
Max Planck Society: MPG.PuRe |
| Subject Terms: |
Präzisionsexperimente - Abteilung Blaum |
| Description: |
The magnetic dipole and the spectroscopic quadrupole moments of the nuclear ground states in the odd- mass nickel isotopes 59−67 Ni have been determined using collinear laser spectroscopy at the CERN-ISOLDE facility. They are compared to ab initio valence-space in-medium similarity renormalization group (VS-IMSRG) calculations including contributions of two-body currents as well as to shell-model calculations. The two-body- current contributions significantly improve the agreement with experimental data, reducing the mean-square deviation from the experimental moments by a factor of 3 to 5, depending on the employed interaction. For all interactions, the largest contributions are obtained for the 5 ∕ 2 – ( 7 ∕ 2 – ) isotopes 65 Ni ( 55 Ni), which is ascribed to the high angular momentum of the f orbitals. Our results demonstrate that the inclusion of two-body-current contributions to the magnetic moment in an isotopic chain of complex nuclei can be handled by the VS-IMSRG and can outperform phenomenological shell-model calculations using effective g-factors in the nickel region. |
| Document Type: |
article in journal/newspaper |
| Language: |
unknown |
| Availability: |
http://hdl.handle.net/21.11116/0000-000F-5309-A |
| Accession Number: |
edsbas.9D720466 |
| Database: |
BASE |