Physics Letters B (May 2022)
Probing the nature of the conjectured low-spin wobbling bands in atomic nuclei
- S. Guo,
- X.H. Zhou,
- C.M. Petrache,
- E.A. Lawrie,
- S.H. Mthembu,
- Y.D. Fang,
- H.Y. Wu,
- H.L. Wang,
- H.Y. Meng,
- G.S. Li,
- Y.H. Qiang,
- J.G. Wang,
- M.L. Liu,
- Y. Zheng,
- B. Ding,
- W.Q. Zhang,
- A. Rohilla,
- K.R. Muhki,
- Y.Y. Yang,
- H.J. Ong,
- J.B. Ma,
- S.W. Xu,
- Z. Bai,
- H.L. Fan,
- J.F. Huang,
- J.H. Li,
- J.H. Xu,
- B.F. Lv,
- W. Hua,
- Z.G. Gan,
- Y.H. Zhang
Affiliations
- S. Guo
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- X.H. Zhou
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China; Corresponding author at: Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
- C.M. Petrache
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
- E.A. Lawrie
- iThemba LABS, National Research Foundation, PO Box 722, 7131 Somerset West, South Africa; Department of Physics & Astronomy, University of the Western Cape, P/B X17, Bellville ZA-7535, South Africa
- S.H. Mthembu
- iThemba LABS, National Research Foundation, PO Box 722, 7131 Somerset West, South Africa; Department of Physics & Astronomy, University of the Western Cape, P/B X17, Bellville ZA-7535, South Africa
- Y.D. Fang
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- H.Y. Wu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
- H.L. Wang
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
- H.Y. Meng
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
- G.S. Li
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- Y.H. Qiang
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- J.G. Wang
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- M.L. Liu
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- Y. Zheng
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- B. Ding
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- W.Q. Zhang
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- A. Rohilla
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- K.R. Muhki
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- Y.Y. Yang
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- H.J. Ong
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- J.B. Ma
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- S.W. Xu
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- Z. Bai
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- H.L. Fan
- College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, China
- J.F. Huang
- Guangzhou Municipal Ecological Environment Bureau Huadu District Branch, Guangzhou 510800, China
- J.H. Li
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- J.H. Xu
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- B.F. Lv
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- W. Hua
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
- Z.G. Gan
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- Y.H. Zhang
- Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Science, Beijing 100049, China
- Journal volume & issue
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Vol. 828
p. 137010
Abstract
The precession of an atomic nucleus can be approximately described as wobbling motion, arising from the coupling of a rotation and a harmonic vibration. Recently, a number of wobbling bands were reported at low spin, which violate the wobbling approximation that can be valid only at high spin. In the present work, we explore the nature of the reported low-spin wobbling bands. Via a new experiment including both angular correlation and linear polarization measurements, we demonstrate that one such band in 187Au is generated by dominant single-particle excitation rather than by the excitation of a wobbling phonon. Assessing the experimental proofs and discussions to assign the reported low-spin wobbling bands, we further point out that the imperfect research paradigm used previously would lead to unreliable identification of low-spin wobbling bands.
