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利用原子束装置，采用双束波长为 λ１＝８５２．１ｎｍ和λ２＝５１０ｎｍ激光的两步激发，实验研究了 Ｃｓ Ｒｙｄｂｅｒｇ态原子在外加电场为 ０～６００ Ｖ／ｃｍ时的 Ｓｔａｒｋ扇形图，观察到在外电场的作用下能级出现l混合和ｎ混合的现象．
The Stark fan of Cs Rydberg state atom at an applied electric field of 0 ~ 600 V / cm was experimentally investigated by using the two-step excitation with two beams of λ1 = 852.1 nm and λ2 = 510 nm with an atomic beam device. Under the action of an external electric field level l mixing and n mixed phenomenon.