Electromagnetic transitions in multiple chiral doublet bands

Abstract

Multiple chiral doublet bands (M$\chi$D) in the $80$, 130 and $190$ mass regions are studied by the model of $\gamma$=90${}^{\circ }$ triaxial rotor coupled with identical symmetric proton-neutron configurations. By selecting the suitable basis, the calculated wave functions are explicitly exhibited to be symmetric under the operator $\hat{A}$, which is defined as rotation by $90^{\circ }$ about 3-axis with the exchange of valance proton and neutron. We found that both $M1$ and $E2$ transitions are allowed between the levels with different values of $A$, while are forbidden between the levels with same values of $A$. Such a selection rule holds true for M$\chi$D in different mass regions.

16 pages, 3 figures in Chinese Physics C 2016

References in corpus (10)

• Progress on tilted axis cranking covariant density functional theory for nuclear magnetic and antimagnetic rotation
• Novel structure for magnetic rotation bands in 60Ni
• From chiral vibration to static chirality in ^{135}Nd
• Chiral bands for quasi-proton and quasi-neutron coupling with a triaxial rotor
• Evidence for Multiple Chiral Doublet Bands in ${}^{133}$Ce
• Covariant density functional theory for antimagnetic rotation
• Multiple chiral doublet bands of identical configuration in 103Rh
• Candidate chiral doublet bands in the odd-odd nucleus ${}^{126}$Cs
• Chiral geometry of higher excited bands in triaxial nuclei with particle-hole configuration
• Examining the chiral geometry in 104Rh and 106Rh