Charge Radius of the Short-Lived Ni68 and Correlation with the Dipole Polarizability

Kaufmann, S.; Simonis, J.; Bacca, S.; Billowes, J.; Bissell, M. L.; Blaum, K.; Cheal, B.; Ruiz, R. F. Garcia; 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. V.; Wehner, L.; Wraith, C.; Xie, L.; Xu, Z. Y.; Yang, X. F.; Yordanov, D. T.

doi:10.1103/PhysRevLett.124.132502

Title: Charge Radius of the Short-Lived ${}^{68}{Ni}$ and Correlation with the Dipole Polarizability

Journal Article · Wed Apr 01 00:00:00 EDT 2020 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.124.132502· OSTI ID:1607964

Kaufmann, S.; Simonis, J.; Bacca, S.; Billowes, J.; Bissell, M. L.;

; Cheal, B.; Ruiz, R. F. Garcia; Gins, W.; Gorges, C.; Hagen, G.; Heylen, H.;

; Malbrunot-Ettenauer, S.; Miorelli, M.; Neugart, R.;

;

; Sailer, S. more »

We present the first laser spectroscopic measurement of the neutron-rich nucleus ⁶⁸Ni 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 ⁴⁸Ca. 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 ⁶⁸Ni.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); ISOLDE Collaboration; European Union’s Horizon 2020; German Research Foundation (DFG); German Federal Ministry of Education and Research (BMBF); Innovative and Novel Computational Impact on Theory and Experiment (INCITE); Science and Technology Facilities Council (STFC)

Grant/Contract Number:: AC05-00OR22725; SC0018223; 654002; 05P18RDCIA; 05P18RDFN1; 05P19RDFN1; ST/ L005670/1; ST/L005794/1; ST/P004423/1; ST/ P004598/1

OSTI ID:: 1607964

Alternate ID(s):: OSTI ID: 1633144

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Vol. 124 Journal Issue: 13; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 25 works

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