Doublet bands at borders of A ≈ 130 island of chiral candidates: Case study of ~(120)I |
| |
摘 要: | Positive-parity doublet bands were reported in ~(120)I. Based on these, we discuss the corresponding experimental characteristics, including rotational alignment, and re-examine the corresponding configuration assignment.The self-consistent tilted axis cranking relativistic mean-field calculations indicate that the doublet bands are built on the configuration πh_(11/2)■νh_(11/2)~(-1). By adopting the two quasiparticles coupled with a triaxial rotor model, the excitation energies, energy staggering parameter S(I), B(M1)/B(E2), effective angles, and K plots are discussed and compared with available data. The obtained results support the interpretation of chiral doublet bands for the positive-parity doublet bands in ~(120)I, and hence identify this nucleus as the border of the A ≈ 130 island of chiral candidates.
|
收稿时间: | 2020-07-01 |
Doublet bands at borders of A ≈ 130 island of chiral candidates: Case study of 120I |
| |
Authors: | Rui Guo Yong-Hao Liu Jian Li Wu-Ji Sun Li Li Ying-Jun Ma |
| |
Institution: | 1. College of Physics, Jilin University, Changchun 130012, China2. Department of Physics, Western Michigan University, Kalamazoo, MI 49008, USA |
| |
Abstract: | Positive-parity doublet bands were reported in 120I. Based on these, we discuss the corresponding experimental characteristics, including rotational alignment, and re-examine the corresponding configuration assignment. The self-consistent tilted axis cranking relativistic mean-field calculations indicate that the doublet bands are built on the configuration \begin{document}$\pi h _{11/2}\otimes \nu h ^{-1}_{11/2}$\end{document}![]() . By adopting the two quasiparticles coupled with a triaxial rotor model, the excitation energies, energy staggering parameter S(I), \begin{document}$B(M1)/B(E2)$\end{document}![]() , effective angles, and K plots are discussed and compared with available data. The obtained results support the interpretation of chiral doublet bands for the positive-parity doublet bands in 120I, and hence identify this nucleus as the border of the A ≈ 130 island of chiral candidates. |
| |
Keywords: | chiral doublet bands particle rotor model cranking relativistic mean-field theory high- j particle hole configuration |
本文献已被 CNKI 等数据库收录! |
| 点击此处可从《中国物理C(英文版)》浏览原始摘要信息 |
| 点击此处可从《中国物理C(英文版)》下载免费的PDF全文 |
|