6533b830fe1ef96bd12968d5
RESEARCH PRODUCT
Precision Mass Measurement of $^{58-63}$Cr: Nuclear Collectivity towards the $N=40$ Island of Inversion
M. MougeotD. AtanasovK. BlaumK. ChrysalidisT. Day GoodacreD. FedorovV. FedosseevS. GeorgeF. HerfurthJ.d. HoltD. LunneyV. ManeaB. MarshD. NeidherrM. RosenbuschS. RotheL. SchweikhardA. SchwenkC. SeiffertJ. SimonisS.r. StrobergA. WelkerF. WienholtzR.n. WolfK. Zubersubject
Nuclear Theory (nucl-th)Nuclear Theorynucl-thNuclear Physics - TheoryNuclear TheoryPhysics::Atomic and Molecular ClustersFOS: Physical sciencesNuclear Physics - ExperimentNuclear Experiment (nucl-ex)[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]nucl-exNuclear ExperimentNuclear Experimentdescription
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 |
|---|---|---|---|---|
| 2018-08-12 |