用微扰理论计算双原子分子的振动能级

Counting Vibrational Energy Level of Diatomic Molecule by Perturbation

理论推导出双原子分子其势能函数为Ｕ（ ｘ） ＝ ｆ２２ ！ｘ２ ＋ ｆ３３ ！ｘ３ 形式下的振动能级，并与光谱经验公式比较得出ｆ２ ，ｆ３ 与光谱常数ωｅ ，ωｅｘｅ

Vibrational energy level of diatomic molecule is counted by perturbation in U(x)=f\-22!x\+2+f\-33!x\+3.The f\-2 and f\-3 is discussed.\;