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Report number	arXiv:2106.04879
Title	Evidence against the wobbling nature of low-spin bands in $^{135}$Pr
Related title	Evidence against the wobbling nature of low-spin bands in $^{135}$Pr
Author(s)	Lv, B.F. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Petrache, C.M. (IJCLab, Orsay) ; Lawrie, E.A. (iThemba LABS ; Western Cape U.) ; Guo, S. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Astier, A. (IJCLab, Orsay) ; Dupont, E. (IJCLab, Orsay) ; Zheng, K.K. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS ; IJCLab, Orsay) ; Ong, H.J. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Wang, J.G. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Zhou, X.H. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Sun, Z.Y. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Greenlees, P.T. (Jyvaskyla U.) ; Badran, H. (Jyvaskyla U.) ; Calverley, T. (Jyvaskyla U. ; Liverpool U.) ; Cox, D.M. (Jyvaskyla U.) ; Grahn, T. (Jyvaskyla U.) ; Hilton, J. (Jyvaskyla U. ; Liverpool U.) ; Julin, R. (Jyvaskyla U.) ; Juutinen, S. (Jyvaskyla U.) ; Konki, J. (Jyvaskyla U. ; CERN) ; Pakarinen, J. (Jyvaskyla U.) ; Papadakis, P. (Jyvaskyla U. ; Daresbury) ; Partanen, J. (Jyvaskyla U.) ; Rahkila, P. (Jyvaskyla U.) ; Ruotsalainen, P. (Jyvaskyla U.) ; Sandzelius, M. (Jyvaskyla U.) ; Saren, J. (Jyvaskyla U.) ; Scholey, C. (Jyvaskyla U.) ; Sorri, J. (Jyvaskyla U. ; Oulu U.) ; Stolze, S. (Jyvaskyla U.) ; Uusitalo, J. (Jyvaskyla U.) ; Cederwall, B. (Royal Inst. Tech., Stockholm) ; Ertoprak, A. (Royal Inst. Tech., Stockholm) ; Liu, H. (Royal Inst. Tech., Stockholm ; Lanzhou, Inst. Modern Phys.) ; Kuti, I. (Debrecen, Inst. Nucl. Res.) ; Timar, J. (Debrecen, Inst. Nucl. Res.) ; Tucholski, A. (Warsaw U., Heavy Ion Lab) ; Srebrny, J. (Warsaw U., Heavy Ion Lab) ; Andreoiu, C. (Simon Fraser U.)
Publication	2022-01-10
Imprint	2021-06-09
Number of pages	6
In:	Phys. Lett. B 824 (2022) 136840
DOI	10.1016/j.physletb.2021.136840 (publication)
Subject category	nucl-ex ; Nuclear Physics - Experiment
Abstract	The electromagnetic character of the $\Delta I=1$ transitions connecting the one- to zero-phonon and the two- to one-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 $^{135}$Pr interpreted as zero-, one-, and two-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.
Copyright/License	preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2021-2024 The Author(s) (License: CC BY 4.0), sponsored by SCOAP³

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