| Title: |
Charge radius of the short-lived 68 Ni and correlation with the dipole polarizability |
| Authors: |
Kaufmann, S.; Simonis, J.; Bacca, S.; Billowes, J.; Bissell, M.; Blaum, K.; Cheal, B.; Garcia Ruiz, R.; Gins, W.; Gorges, C.; Hagen, G.; Heylen, H.; Kanellakopoulos, A.; Malbrunot-Ettenauer, S.; Miorelli, M.; Neugart, R.; Neyens, G.; Nörtershäuser, W.; Sánchez, R.; Sailer, S.; Schwenk, A.; Ratajczyk, T.; Rodríguez, L.; Wehner, L.; Wraith, C.; Xie, L.; Xu, Z.; Yang, X.; Yordanov, D. |
| Source: |
Physical Review Letters |
| Publication Year: |
2020 |
| Collection: |
Max Planck Society: MPG.PuRe |
| Subject Terms: |
Präzisionsexperimente - Abteilung Blaum |
| Description: |
We present the first laser spectroscopic measurement of the neutron-rich nucleus 68 Ni at the N=40 subshell closure and extract its nuclear charge radius. Since this is the only short-lived isotope for which the dipole polarizability α D has been measured, the combination of these observables provides a benchmark for nuclear structure theory. We compare them to novel coupled-cluster calculations based on different chiral two- and three-nucleon interactions, for which a strong correlation between the charge radius and dipole polarizability is observed, similar to the stable nucleus 48 Ca. Three-particle–three-hole correlations in coupled-cluster theory substantially improve the description of the experimental data, which allows to constrain the neutron radius and neutron skin of 68 Ni. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Availability: |
http://hdl.handle.net/21.11116/0000-0006-49B4-D; http://hdl.handle.net/21.11116/0000-0006-49B6-B |
| Rights: |
info:eu-repo/semantics/openAccess ; http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
| Accession Number: |
edsbas.CDD058AB |
| Database: |
BASE |