Multi-quasiparticle states and rotational bands in neutron-rich erbium isotopes have been investigated by the configuration- constrained pairing-deformation-frequency self-consistent total-Routhian-surface （TRS） met...Multi-quasiparticle states and rotational bands in neutron-rich erbium isotopes have been investigated by the configuration- constrained pairing-deformation-frequency self-consistent total-Routhian-surface （TRS） method with particle-number-conserved pairing. Specifically, the recently observed Kπ = 4- bands in 168,170,172Er have been found to experience a configuration change in our calculation. Some other multi-quasiparticle states with uncertain configuration assignments have been reinvestigated by calculating their collective rotations. The configuration-constrained TRS calculation can reproduce experimental data consistently.展开更多
基金the National Key Basic Research Program of China (Grant No. 2013CB834400)the National Natural Science Foundation of China (Grant No. 11235001)
文摘Multi-quasiparticle states and rotational bands in neutron-rich erbium isotopes have been investigated by the configuration- constrained pairing-deformation-frequency self-consistent total-Routhian-surface （TRS） method with particle-number-conserved pairing. Specifically, the recently observed Kπ = 4- bands in 168,170,172Er have been found to experience a configuration change in our calculation. Some other multi-quasiparticle states with uncertain configuration assignments have been reinvestigated by calculating their collective rotations. The configuration-constrained TRS calculation can reproduce experimental data consistently.
