偶偶核基带的量子群U_（qp）（u_2）模型的理论分析

Theoretical Analysis of an U_(qp)(u_2) Model for Ground-State Bands in Even-Even Nuclei

通过对锕系和稀土偶偶核基带转动谱实验数据的拟合和Ｍａｌｌｍａｎｎ图的研究，系统地分析了量子群Ｕｑｐ（ｕ２）模型对原子核转动谱的适用性．结果表明，Ｕｑｐ（ｕ２）模型的理论值与实验值比较接近，明显优于单参数形变量子代数ＳＵｑ（２）模型．此外，还建立了Ｕｑｐ（ｕ２）的形变参量ｑ、ｐ与核软度的关系．

The validity of an Uqp(u2)model for the nuclear rotational spectrum is systematically analysed by investigating the Mallmann plots and fitting the experimental data for the even-even rare-earth and actinide nuclei.The results show that the theoretical values obtained from the Uqp(u2) model are in a good accordance with the experimental findings.Thus the Uqp(u2) model has some advantages over the SUq(2)model as far as energy levels are concerned. Further more,a relationship between the parameters of deformations and the nuclear softness is also established.