12C + 12C resonances by a molecular model

3rd International Workshop on "State of the Art in Nuclear Cluster Physics"

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

Graduate School of Engineering and Resource Science, Akita University, Akita

010-8502, Japan^1

Research Center for Nuclear Physics, Osaka University, Ibaraki

567-0047, Japan^2

关键词: Angular momentum coupling;    Coriolis coupling;    Diagonalizations;    High spins;    Molecular ground state;    Normal modes;    Quantum numbers;    Rotation vibration;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/569/1/012091/pdf
DOI  :  10.1088/1742-6596/569/1/012091

来源: IOP

【 摘 要 】

Resonances observed in the12C +12C collisions are studied with a molecular model. At high spins J 12-16, a stable dinuclear configuration is found to be an equator- equator touching one as is obtained in the28Si +28Si system. With K-quantum number being specified as rotation-vibration model, normal modes have been solved around the equilibrium, firstly. Furthermore, Coriolis coupling has been investigated by diagonalization among low- lying normal-mode states with K 0 and K-excitation. It is found that the Coriolis coupling introduces about 30% of K-mixing into the K 0 molecular ground states of J 12-16. The analyses of the angular momentum coupling show up a dominance of the lowest L in the inelastic channel of the molecular ground state newly obtained. Thus alignments appear strongly in the inelastic channel, which is in agreement with the explanation by the band crossing model. Discussion is given on "why disalignments appear in the28Si +28Si system, in contrast to the above results".