摘要
Within the framework of the U<SUB>sdpf</SUB>(16) interacting boson model (IBM), the effects of strong correlations of the dipole (p<SUP>?</SUP>-boson) and the octupole (f<SUP>?</SUP>-boson) degree of freedom on the positive-parity states of even-even nuclei in SU(3) limit are discussed. It is shown that configurations of an even number of many p- and f-bosons can not only be incorporated into the usual low-lying collective rotational bands, such as the ground state band, β- and γ-vibrational bands, but also naturally form the rotational bands, etc. These results are similar to that of U<SUB>sdg</SUB>(15)-IBM and in good agreement with the experimental data of the nucleus. Besides, several intraband E2 transition probabilities are given, which are consistent with that of U<SUB>sd</SUB>(6)-IBM.
基金
上海交通大学校科研和教改项目
