Negative parity states in the IVBM

20th International School on Nuclear Physics, Neutron Physics and Applications

Ganev, H.G.^1

Joint Institute for Nuclear Research, Dubna

141980, Russia^1

关键词: Dynamical symmetry;    Even-even nuclei;    Mass regions;    Representation space;    Symplectic;    Transition probabilities;    Vector boson;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/533/1/012015/pdf
DOI  :  10.1088/1742-6596/533/1/012015

来源: IOP

【 摘 要 】

The low-lying spectra including the first few excited positive and negative parity bands of some heavy even-even nuclei from the rare earth and actinide mass regions are investigated within the framework of the symplectic Interacting Vector Boson Model with Sp(12,R) dynamical symmetry group. Symplectic dynamical symmetries allow the change of the number of excitation quanta or phonons building the collective states providing for larger representation spaces and richer subalgebraic structures to incorporate more complex nuclear spectra. The theoretical predictions for the energy levels and transition probabilities between the collective states are compared with experiment and some other collective models incorporating octupole degrees of freedom.