摘要
Collective states in the neutron-rich Sr isotopes with A=98,100 are studied inthe SU（3） limit of the interacting boson model.It is found that the spectrum is well re-produced with the SU（3） limit.Being different from previous studies,our results showthat the assumption of 0.871 MeV state in <sup>98</sup>Sr as the 2<sub>γ</sub> state is consistent with theavailable E2 transition data.
Collective states in the neutron-rich Sr isotopes with A=98,100 are studied in the SU（3） limit of the interacting boson model.It is found that the spectrum is well re- produced with the SU（3） limit.Being different from previous studies,our results show that the assumption of 0.871 MeV state in <sup>98</sup>Sr as the 2<sub>γ</sub> state is consistent with the available E2 transition data.
基金
The project supported by the National Natural Science Foundation of China
Fund for Fundamental Research of Tsinghua University
