6533b85bfe1ef96bd12bac0c
RESEARCH PRODUCT
Evidence against the wobbling nature of low-spin bands in 135Pr
B.f. LvC.m. PetracheE.a. LawrieS. GuoA. AstierE. DupontK.k. ZhengH.j. OngJ.g. WangX.h. ZhouZ.y. SunP.t. GreenleesH. BadranT. CalverleyD.m. CoxT. GrahnJ. HiltonR. JulinS. JuutinenJ. KonkiJ. PakarinenP. PapadakisJ. PartanenP. RahkilaP. RuotsalainenM. SandzeliusJ. SarenC. ScholeyJ. SorriS. StolzeJ. UusitaloB. CederwallA. ErtoprakH. LiuI. KutiJ. TimarA. TucholskiJ. SrebrnyC. Andreoiusubject
γγγ-coincidencesNuclear and High Energy Physics010308 nuclear & particles physicsPhysicsQC1-999FOS: Physical sciences-coincidences[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]nucl-ex01 natural sciencesParticle rotor modelAngular correlationsspin (kvanttimekaniikka)0103 physical sciencesWobbling bandsNuclear Physics - ExperimentNuclear Experiment (nucl-ex)ydinfysiikka010306 general physicsNuclear Experimentdescription
International audience; The electromagnetic character of the ΔI=1 transitions connecting the 1- to 0-phonon and the 2- to 1-phonon wobbling bands should be dominated by an E2 component, due to the collective motion of the entire nuclear charge. In the present work it is shown, based on combined angular correlation and linear polarization measurements, that the mixing ratios of all analyzed connecting transitions between low-lying bands in 135Pr interpreted as 0-, 1-, and 2-phonon wobbling bands, have absolute values smaller than one. This indicates predominant M1 magnetic character, which is incompatible with the proposed wobbling nature. All experimental observables are instead in good agreement with quasiparticle-plus-triaxial-rotor model calculations, which describe the bands as resulting from a rapid re-alignment of the total angular momentum from the short to the intermediate nuclear axis.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-06-09 |