A1 Journal article (refereed)
Evidence against the wobbling nature of low-spin bands in 135Pr (2022)


Lv, B.F., Petrache, C.M., Lawrie, E.A., Guo, S., Astier, A., Zheng, K.K., Ong, H.J., Wang, J.G., Zhou, X.H., Sun, Z.Y., Greenlees, P.T., Badran, H., Calverley, T., Cox, D.M., Grahn, T., Hilton, J., Julin, R., Juutinen, S., Konki, J., . . . Andreoiu, C. (2022). Evidence against the wobbling nature of low-spin bands in 135Pr. Physics Letters B, 824, Article 136840. https://doi.org/10.1016/j.physletb.2021.136840


JYU authors or editors


Publication details

All authors or editors: Lv, B.F.; Petrache, C.M.; Lawrie, E.A.; Guo, S.; Astier, A.; Zheng, K.K.; Ong, H.J.; Wang, J.G.; Zhou, X.H.; Sun, Z.Y.; et al.

Journal or series: Physics Letters B

ISSN: 0370-2693

eISSN: 1873-2445

Publication year: 2022

Volume: 824

Article number: 136840

Publisher: Elsevier BV

Publication country: Netherlands

Publication language: English

DOI: https://doi.org/10.1016/j.physletb.2021.136840

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/79475


Abstract

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.


Keywords: nuclear physics; spin (quantum mechanics)

Free keywords: γγγ-coincidences; angular correlations; particle rotor model; wobbling bands


Contributing organizations


Ministry reporting: Yes

Reporting Year: 2022

Preliminary JUFO rating: 2


Last updated on 2022-20-09 at 14:21