利用原子束装置，采用双束波长为λl=852．1 nm和λ2=510 nm激光的两步激发， 实验研究了Cs Rydberg态原子在外加电场为0～600V／cm时的Stark扇形图，观察到在外电 场的作用下能级出现ι混合和n混合的现象．
With an atomic beam apparatus and two lasers at λ1 = 852.1nm and λ2=510 nm, the Cs atoms are excited to high Rydberg states via a two-step process. The Stark effect of the Rydberg Cs atom has been experimentally studied in the range of external field 0～600 V/cm, the map of the Stark spectra reveal profound “l-mixing” and “n-mixing” of the Stark sublevels.
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