Physics Letters B (Jan 2022)
Evidence against the wobbling nature of low-spin bands in 135Pr
- B.F. Lv,
- C.M. Petrache,
- E.A. Lawrie,
- S. Guo,
- A. Astier,
- K.K. Zheng,
- H.J. Ong,
- J.G. Wang,
- X.H. Zhou,
- Z.Y. Sun,
- P.T. Greenlees,
- H. Badran,
- T. Calverley,
- D.M. Cox,
- T. Grahn,
- J. Hilton,
- R. Julin,
- S. Juutinen,
- J. Konki,
- J. Pakarinen,
- P. Papadakis,
- J. Partanen,
- P. Rahkila,
- P. Ruotsalainen,
- M. Sandzelius,
- J. Sarén,
- C. Scholey,
- J. Sorri,
- S. Stolze,
- J. Uusitalo,
- B. Cederwall,
- A. Ertoprak,
- H. Liu,
- I. Kuti,
- J. Timár,
- A. Tucholski,
- J. Srebrny,
- C. Andreoiu
Affiliations
- B.F. Lv
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China; Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
- C.M. Petrache
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France; Corresponding author.
- E.A. Lawrie
- iThemba LABS, National Research Foundation, PO Box 722, Somerset West 7129, South Africa; Department of Physics, University of the Western Cape, Private Bag X17, 7535 Bellville, South Africa
- S. Guo
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, People's Republic of China
- A. Astier
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
- K.K. Zheng
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China; Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
- H.J. Ong
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, People's Republic of China
- J.G. Wang
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, People's Republic of China
- X.H. Zhou
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, People's Republic of China
- Z.Y. Sun
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, People's Republic of China
- P.T. Greenlees
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- H. Badran
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- T. Calverley
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland; Oliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
- D.M. Cox
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland; Department of Mathematical Physics, Lund Institute of Technology,S-22362 Lund, Sweden
- T. Grahn
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- J. Hilton
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland; Oliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
- R. Julin
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- S. Juutinen
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- J. Konki
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland; CERN, CH-1211 Geneva 23, Switzerland
- J. Pakarinen
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- P. Papadakis
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland; Oliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
- J. Partanen
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- P. Rahkila
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- P. Ruotsalainen
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- M. Sandzelius
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- J. Sarén
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- C. Scholey
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- J. Sorri
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland; Sodankylä Geophysical Observatory, University of Oulu, FIN-99600 Sodankylä, Finland
- S. Stolze
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland; Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
- J. Uusitalo
- University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
- B. Cederwall
- KTH Department of Physics, S-10691 Stockholm, Sweden
- A. Ertoprak
- KTH Department of Physics, S-10691 Stockholm, Sweden
- H. Liu
- KTH Department of Physics, S-10691 Stockholm, Sweden
- I. Kuti
- Institute for Nuclear Research (Atomki-ELKH), 4001 Debrecen, Hungary
- J. Timár
- Institute for Nuclear Research (Atomki-ELKH), 4001 Debrecen, Hungary
- A. Tucholski
- University of Warsaw, Heavy Ion Laboratory, Pasteura 5a, 02-093 Warsaw, Poland
- J. Srebrny
- University of Warsaw, Heavy Ion Laboratory, Pasteura 5a, 02-093 Warsaw, Poland
- C. Andreoiu
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
- Journal volume & issue
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Vol. 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.
