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arXiv · 2003.06960

Studying the doublet bands at the borders of the $A \approx 130$ island of chiral candidates: the $^{120}$I case

Rui Guo·Yong-Hao Liu·Jian Li·Wu-Ji Sun·Li Li·Ying-Jun Ma
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Abstract

Based on the reported positive-parity doublet bands in $^{120}$I, the corresponding experimental characteristics including rotational alignment have been discussed and corresponding configuration assignment is reexamined. The self-consistent tilted axis cranking relativistic mean-field calculations indicates that this doublet bands is built on configuration $\pi h_{11/2}\otimes \nu h ^{-1}_{11/2}$. In addition, 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 $K$ $plots$ have been discussed and also compared with the available data. All of these 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 $A \approx 130$ island of chiral candidates.

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Rui Guo, Yong-Hao Liu, Jian Li, Wu-Ji Sun, Li Li, Ying-Jun Ma. 2020-03-16. Studying the doublet bands at the borders of the $A \approx 130$ island of chiral candidates: the $^{120}$I case. https://arxiv.org/abs/2003.06960

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