6533b82dfe1ef96bd12909dd
RESEARCH PRODUCT
Exploring the mass surface near the rare-earth abundance peak via precision mass measurements at JYFLTRAP
Matthew MumpowerRebecca SurmanM. VilenSami Rinta-antilaL. CaneteTommi EronenAri JokinenA. De RoubinIain MooreAnu KankainenJ. O'brienMaxime BrodeurAni AprahamianJ. M. KellyMikael ReponenHeikki PenttiläDmitrii NesterenkoR. P. De GrooteA. Pardo Perdomosubject
EFFICIENCYrare and new isotopesastrofysiikkanuclear astrophysicsNuclear Theoryr processFOS: Physical sciencesnucl-ex01 natural sciences7. Clean energybinding energy and massesIonPENNING TRAPS0103 physical sciencesNuclear Physics - ExperimentNeutronNuclideIONNuclear Experiment (nucl-ex)Nuclear Experiment010306 general physicsNuclear ExperimentDETECTORPhysicsScience & TechnologySTABILITYIsotope010308 nuclear & particles physicsPhysicsR-PROCESSRAMSEY METHODPenning trapnuclear structure and decaysAtomic massNeutron capturePhysics NuclearSPECTROMETRY13. Climate actionPairingPhysical SciencesELECTRONAtomic physicsydinfysiikkaDECAYdescription
The JYFLTRAP double Penning trap at the Ion Guide Isotope Separator On-Line (IGISOL) facility has been used to measure the atomic masses of 13 neutron-rich rare-earth isotopes. Eight of the nuclides, $^{161}$Pm, $^{163}$Sm, $^{164,165}$Eu, $^{167}$Gd, and $^{165,167,168}$Tb, were measured for the first time. The systematics of the mass surface has been studied via one- and two-neutron separation energies as well as neutron pairing-gap and shell-gap energies. The proton-neutron pairing strength has also been investigated. The impact of the new mass values on the astrophysical rapid neutron capture process has been studied. The calculated abundance distribution results in a better agreement with the solar abundance pattern near the top of the rare-earth abundance peak at around $A\approx165$.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-08-14 | Physical Review C |