Evidence against the wobbling nature of low-spin bands in <sup>135</sup>Pr

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.; Pakarinen, J.; Papadakis, P.; Partanen, J.; Rahkila, P.; Ruotsalainen, P.; Sandzelius, M.; Sarén, J.; Scholey, C.; Sorri, J.; Stolze, S.; Uusitalo, J.; Cederwall, B.; Ertoprak, A.; Liu, H.; Kuti, I.; Timár, J.; Tucholski, A.; Srebrny, J.; Andreoiu, C.

Evidence against the wobbling nature of low-spin bands in ¹³⁵Pr

Mark

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. and Sun, Z. Y. , et al. (2022) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 824.

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... (More); 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.
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Please use this url to cite or link to this publication: https://lup.lub.lu.se/record/b0407866-7fb8-4e36-bd58-2aa89f1416ae

author

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. and Sun, Z. Y. , et al. (More)

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. ^LU ; Grahn, T. ; Hilton, J. ; Julin, R. ; Juutinen, S. ; Konki, J. ; Pakarinen, J. ; Papadakis, P. ; Partanen, J. ; Rahkila, P. ; Ruotsalainen, P. ; Sandzelius, M. ; Sarén, J. ; Scholey, C. ; Sorri, J. ; Stolze, S. ; Uusitalo, J. ; Cederwall, B. ; Ertoprak, A. ; Liu, H. ; Kuti, I. ; Timár, J. ; Tucholski, A. ; Srebrny, J. and Andreoiu, C. ^LU (Less)

organization

Nuclear physics

publishing date

2022-01

type

Contribution to journal

publication status

published

subject

Physical Sciences

keywords

Angular correlations, Particle rotor model, Wobbling bands, γγγ-coincidences

in

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

volume

824

article number

136840

publisher

Elsevier

external identifiers

scopus:85121301383

ISSN

0370-2693

DOI

10.1016/j.physletb.2021.136840

language

English

LU publication?

yes

id

b0407866-7fb8-4e36-bd58-2aa89f1416ae

date added to LUP

2022-01-25 15:49:17

date last changed

2022-04-27 07:22:52

@article{b0407866-7fb8-4e36-bd58-2aa89f1416ae,
  abstract     = {{<p>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 <sup>135</sup>Pr 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.</p>}},
  author       = {{Lv, B. F. and Petrache, C. M. and Lawrie, E. A. and Guo, S. and Astier, A. and Zheng, K. K. and Ong, H. J. and Wang, J. G. and Zhou, X. H. and Sun, Z. Y. and Greenlees, P. T. and Badran, H. and Calverley, T. and Cox, D. M. and Grahn, T. and Hilton, J. and Julin, R. and Juutinen, S. and Konki, J. and Pakarinen, J. and Papadakis, P. and Partanen, J. and Rahkila, P. and Ruotsalainen, P. and Sandzelius, M. and Sarén, J. and Scholey, C. and Sorri, J. and Stolze, S. and Uusitalo, J. and Cederwall, B. and Ertoprak, A. and Liu, H. and Kuti, I. and Timár, J. and Tucholski, A. and Srebrny, J. and Andreoiu, C.}},
  issn         = {{0370-2693}},
  keywords     = {{Angular correlations; Particle rotor model; Wobbling bands; γγγ-coincidences}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}},
  title        = {{Evidence against the wobbling nature of low-spin bands in <sup>135</sup>Pr}},
  url          = {{http://dx.doi.org/10.1016/j.physletb.2021.136840}},
  doi          = {{10.1016/j.physletb.2021.136840}},
  volume       = {{824}},
  year         = {{2022}},
}

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Evidence against the wobbling nature of low-spin bands in ¹³⁵Pr