Corpus ID: 237571843

Probing the nature of the conjectured low-spin wobbling bands in atomic nuclei

  title={Probing the nature of the conjectured low-spin wobbling bands in atomic nuclei},
  author={S. Guo and X. H. Zhou and C. M. Petrache and E. A. Lawrie and S.H. Mthembu and Y. Fang and H. Y. Wu and H. L. Wang and H. Y. Meng and G. S. Li and Yujie Qiang and J. G. Wang and M. L. Liu and Y. Zheng and Bing Ding and W. Q. Zhang and Aman Rohilla and Kumar Raju Mukhi and Y. Y. Yang and H. J. Ong and J. B. Ma and S. W. Xu and Z. Bai and H. L. Fan and J. F. Huang and J. H. Li and J. H. Xu and B. F. Lv and Wei Hua and Zaiguo Gan and Y. H. Zhang},
  • S. Guo, X. Zhou, +28 authors Y. H. Zhang
  • Published 29 November 2020
  • Physics
Precession is a unique motion in which the orientation of the rotational axis of a rotating body is not fixed but moving, and it generally exists in the Universe from giant stars through tiny atomic nuclei. In principle, the precession of an atomic nuclide 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… Expand

Figures and Tables from this paper


Transverse wobbling: A collective mode in odd- A triaxial nuclei
The wobbling motion of a triaxial rotor coupled to a high-j quasiparticle is treated semiclassi- cally. Longitudinal and transverse coupling regimes can be distinguished depending on, respectively,Expand
One- and two-phonon wobbling excitations in triaxial 165Lu
High-spin states in Lu-165 have been investigated by in-beam gamma-ray coincidence spectroscopy using the EUROBALL spectrometer array. Two new excited rotational bands have been discovered withExpand
Wobbling mode in 167Ta
The collective wobbling mode, the strongest signature for the rotation of a triaxial nucleus, has previously been seen only in a few Lu isotopes in spite of extensive searches in nearby isotopes. AExpand
Longitudinal wobbling in 133La
Abstract.Excited states of 133La have been investigated to search for the wobbling excitation mode in the low-spin regime. Wobbling bands with $n_{\omega} = 0$nω=0 and 1 are identified along with theExpand
Experimental Evidence for Transverse Wobbling in ^{105}Pd.
This work provides the first experimental evidence for transverse wobbling bands based on a one-neutron configuration, and also represents the first observation of wobbling motion in the A∼100 mass region. Expand
Collective model description of transitional odd-A nuclei: (I). The triaxial-rotor-plus-particle model
Abstract The energy spectrum of an odd nucleon coupled to a triaxial rotating core has been calculated as a function of the deformation β, the asymmetry γ and the Fermi energy λf. Results areExpand
Transverse Wobbling in 135Pr
In any experimental science, analysis of collected experimental data combined with comparison to theoretical models is necessary to understand the system’s behavior. In high spin gamma-rayExpand
Evidence for the wobbling mode in nuclei.
Evidence is presented for the assignment of the excited T SD band as a wobbling mode built on the yrast TSD band, based on comparisons to new calculations in which an aligned particle is coupled to a strongly deformed triaxial rotor. Expand
Longitudinal Wobbling Motion in ^{187}Au.
This is the first experimental evidence for longitudinal wobbling bands where the expected signature partner band has also been identified, and establishes this exotic collective mode as a general phenomenon over the nuclear chart. Expand
Rotational bands and particle-hole excitations at very high spin
Abstract A method of calculating high-spin states of nuclei within the cranked Nilsson-Strutinsky framework is presented and discussed in some detail. With this method, various high-spin features ofExpand