6533b82dfe1ef96bd1291375
RESEARCH PRODUCT
Dawning of the N=32 shell closure seen through precision mass measurements of neutron-rich titanium isotopes
J. BolligJ. BolligChristian WillV. SomàS. Ayet San AndrésS. Ayet San AndrésC. JeschWolfgang R. PlaßWolfgang R. PlaßChristine HornungJ. E. MckayJ. E. MckayJason D. HoltCarlo BarbieriJulian BergmannL. GrahamD. ShortD. ShortHans GeisselHans GeisselPetr NavrátilMoritz P. ReiterMoritz P. ReiterR. KlawitterR. KlawitterS. R. StrobergS. R. StrobergFlorian GreinerGerald GwinnerHeiko HergertB. R. BarquestR. SteinbrüggeT. BrunnerT. BrunnerCorina AndreoiuA. A. KwiatkowskiA. A. KwiatkowskiE. DunlingE. DunlingIris DillmannIris DillmannJens DillingJens DillingAchim SchwenkAchim SchwenkAchim SchwenkTimo DickelTimo DickelDaniel LascarDaniel LascarA. FinlayA. FinlayJ. SimonisY. LanY. LanS. F. PaulS. F. PaulC. ScheidenbergerC. ScheidenbergerErich LeistenschneiderErich LeistenschneiderWayne LippertMikhail I. YavorC. BabcockMichael E. WieserRobert ThompsonB. KootteB. KootteK. G. Leachsubject
Materials scienceNuclear Theorynucl-thNuclear TheoryAb initioGeneral Physics and Astronomychemistry.chemical_elementFOS: Physical sciences[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]Mass spectrometrynucl-ex01 natural sciencesNuclear Theory (nucl-th)symbols.namesake0103 physical sciencesPhysics::Atomic and Molecular ClustersNeutron[ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex]Nuclear Experiment (nucl-ex)010306 general physicsNuclear ExperimentNuclear ExperimentIsotope010308 nuclear & particles physicsStarke Wechselwirkung und exotische Kerne – Abteilung BlaumPenning trapchemistry13. Climate actionsymbolsIon trapAtomic physicsTitan (rocket family)Titaniumdescription
A precision mass investigation of the neutron-rich titanium isotopes 51 − 55 Ti was performed at TRIUMF’s Ion Trap for Atomic and Nuclear science (TITAN). The range of the measurements covers the N = 32 shell closure, and the overall uncertainties of the 52 − 55 Ti mass values were significantly reduced. Our results conclusively establish the existence of the weak shell effect at N = 32 , narrowing down the abrupt onset of this shell closure. Our data were compared with state-of-the-art ab initio shell model calculations which, despite very successfully describing where the N = 32 shell gap is strong, overpredict its strength and extent in titanium and heavier isotones. These measurements also represent the first scientific results of TITAN using the newly commissioned multiple-reflection time-of-flight mass spectrometer, substantiated by independent measurements from TITAN’s Penning trap mass spectrometer.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-02-09 |