A nuclear phenomenological study of the even-even Ytterbium Isotopes ${}^{166-176}\mathrm{Yb}$ was carried out, in the framework of the interacting Boson model-1 (IBM-1) and modified soft rotor formula (MSRF). The energy levels for ground-state, γ- and β-rotational bands were calculated. Also, electric transition probability B (E2) for these isotopes was calculated. Furthermore, the intrinsic coherent state was used to find the potential energy surfaces. The staggering effect of a γ-band, which is a function of spin, was analyzed. The results obtained by applying the IBM-1 and the MSRF are in good agreement with the corresponding experimental data for most of the nuclear states.

偶数Y同位素的核现象学研究 ${}^{166-176}\mathrm{b}$在相互作用的玻色子模型1（IBM-1）和改进的软转子公式（MSRF）的框架内进行了实验。计算了基态，γ-和β-旋转带的能级。同样，计算了这些同位素的电跃迁几率B（E2）。此外，本征相干态被用来寻找势能面。分析了作为自旋函数的γ谱带的交错效应。通过应用IBM-1和MSRF获得的结果与大多数核状态的相应实验数据高度吻合。