Abstract: The formula of level shifts in AC Zeeman effect is derived on the base of a simple semiclassical method. The theoretical predictions of this formula are qualitatively in good agreement with the phenomena observed in AC Zeeman experiment. Furthermore, two important properties of AC Zeeman effect are predicted in theory: the level shifts in AC Zeeman effect of atom are the transient courses concurring with transition; the level shifts have saturation property.

Key words: AC Zeeman effect, level-shift formula, level-shift saturation, two-level atom

摘要： 用一种简单的半经典方法推导出了交流塞曼效应中的能级移动公式。从这一公式得到的结果与实验中观察到的现象是一致的，而且从理论上预言了交流塞曼效应的2个重要性质：原子交流塞曼效应中的能级移动是与跃迁同时发生的瞬态过程；能级移动具有饱和性。

关键词: 交流塞曼效应, 能级移动公式, 能级移动饱和, 二能级原子