Wobbling excitation of triaxial nuclear molecule 28Si _ 28Si

10th International Conference on Clustering Aspects of Nuclear Structure and Dynamics

Uegaki, E.^1 ; Abe, Y.^2

Graduate School of Engineering and Resource Sci., Akita University, Akita 010-8502, Japan^1

Research Center for Nuclear Physics, Osaka University, Ibaraki 567-0047, Japan^2

关键词: Angular correlations;    Dinuclear;    E configuration;    First excited state;    High spins;    Molecular ground state;    Quantum numbers;    Wobbling motion;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/436/1/012053/pdf
DOI  :  10.1088/1742-6596/436/1/012053

来源: IOP

【 摘 要 】

High-spin resonances observed in the28Si +28Si collisions are investigated with a molecular model. At high spins, a stable dinuclear configuration is found to be an equator-equator touching one. Since the E-E configuration is slightly triaxial, rotations of the total system induce mixing of K quantum numbers, called wobbling motion, which clearly explains the particle-γ angular correlations observed as well as the disalignments in a simple and natural way. Furthermore, predictions are given for the angular correlations of the wobbling excited states. The first excited state of wobbling shows strong alignments, which is quite different from the molecular ground state.