6533b7dafe1ef96bd126ea8b
RESEARCH PRODUCT
Precision Mass Measurements of Cr58–63 : Nuclear Collectivity Towards the N=40 Island of Inversion
Dinko AtanasovVladimir ManeaFrank WienholtzJ. SimonisJ. SimonisA. WelkerM. MougeotD. V. FedorovD. NeidherrKlaus BlaumK. ChrysalidisK. ChrysalidisSebastian GeorgeD. LunneySebastian RotheAchim SchwenkAchim SchwenkRobert WolfKai ZuberS. R. StrobergB. A. MarshLutz SchweikhardC. SeiffertV. N. FedosseevF. HerfurthMarco RosenbuschJason D. HoltT. Day GoodacreT. Day Goodacresubject
PhysicsProtonIsotope010308 nuclear & particles physicsIsland of inversionNuclear TheoryAb initioNuclear structureGeneral Physics and AstronomyRenormalization group01 natural sciences7. Clean energyISOLTRAPNuclear physics0103 physical sciencesPhysics::Atomic and Molecular ClustersNeutronNuclear Experiment010306 general physicsdescription
The neutron-rich isotopes $^{58-63}$Cr were produced for the first time at the ISOLDE facility and their masses were measured with the ISOLTRAP spectrometer. The new values are up to 300 times more precise than those in the literature and indicate significantly different nuclear structure from the new mass-surface trend. A gradual onset of deformation is found in this proton and neutron mid-shell region, which is a gateway to the second island of inversion around \emph{N}=40. In addition to comparisons with density-functional theory and large-scale shell-model calculations, we present predictions from the valence-space formulation of the \emph{ab initio} in-medium similarity renormalization group, the first such results for open-shell chromium isotopes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-06-06 | Physical Review Letters |