arXiv subjects
Publications and source records attributed to J. Peng.
Adiabatic and configuration-fixed constraint triaxial relativistic mean field (RMF) approaches are developed for the first time and a new phenomenon, the existence of multi chiral-doublets (M$χ$D), i.e., more than one pairs of chiral doublets bands in one single nucleus, is suggested for nuclei in A~100 region, typically for $^{106}$Rh, based on the triaxial deformations together with their corresponding proton and neutron configurations.
The chiral doublets for nuclei in $A\sim100$ and $A\sim130$ regions have been studied with the particle-rotor model. The experimental spectra of chiral partners bands for four N=75 isotones in $A\sim130$ region have been well reproduced by the calculation with the configuration $πh_{11/2}\otimesνh_{11/2}^{-1}$. The possible chiral doublets in $A\sim100$ region have been predicted by the PRM model with the configuration $πg_{9/2}\otimesνg_{9/2}^{-1}$ based on the analysis of the spectra, the $ω$-I relation, the $B(M1)$ and $B(E2)$ transition probabilities, and the structure of the wave functions. The possible chiral doublets for nuclei with asymmetric particle and hole configuration are also discussed.