摘要
用可调谐激光两步激发Na原子高激发里德堡态布居，在光激发后施加脉冲电场测定激发态的场电离阈，利用阈值电场和延迟场电离方法测定了ns（n＝20～24）和nd（n＝19～23）态的寿命值，并与计算值进行了比较。对影响寿命的因素作了讨论。
We have obtained the population of the highly excited Rydberg states of sodium atom by two-step excitation using tunable lasers. The field- ionization thresholds for excitation states were measured by using a pulse electric field, which applied to interaction region after the laser excitation. Lifetimes for ns (n = 20 ~ 24) and nd (n = 19 ~ 23)states were measured by delaying field-ionization, and compared with the calculation values. The influence of some factors on lifetime is discussed.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1996年第4期567-570,共4页
Acta Optica Sinica
基金
国家自然科学基金
