Lv, BF, Petrache, CM, Lawrie, EA, Guo, S, Astier, A, Zheng, KK, Ong, HJ, Wang, JG, Zhou, XH, Sun, ZY et al (show 28 more authors)
(2022)
Evidence against the wobbling nature of low-spin bands in <SUP>135</SUP>Pr.
PHYSICS LETTERS B, 824.
p. 136840.
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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | gamma gamma gamma-coincidences, Angular correlations, Particle rotor model, Wobbling bands |
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 13 May 2022 10:34 |
| Last Modified: | 09 Oct 2023 12:20 |
| DOI: | 10.1016/j.physletb.2021.136840 |
| Open Access URL: | https://www.sciencedirect.com/science/article/pii/... |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3154725 |
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