6533b872fe1ef96bd12d412b
RESEARCH PRODUCT
Charge Radius of the Short-Lived Ni68 and Correlation with the Dipole Polarizability
S. KaufmannMirko MiorelliW. GinsL. V. RodríguezBradley ChealR. F. Garcia RuizS. Malbrunot-ettenauerDeyan YordanovKlaus BlaumL. XieJ. BillowesGerda NeyensC. WraithWilfried NörtershäuserL. WehnerH. HeylenA. KanellakopoulosR. SánchezSonia BaccaS. SailerJ. SimonisTim RatajczykZiye XuC. GorgesMark BissellXiaofei YangAchim SchwenkRainer NeugartGaute Hagensubject
PhysicsIsotopeNuclear TheoryNuclear structureGeneral Physics and AstronomyRadius01 natural sciencesEffective nuclear chargeDipolePolarizabilityCharge radius0103 physical sciencesNeutronPhysics::Atomic PhysicsAtomic physicsNuclear Experiment010306 general physicsdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-04-01 | Physical Review Letters |