Sr原子5snd^1D_2Rydberg态的多重电离阈

Field Ionization Multiple Thresholds for 5snd 1D 2 Rydberg States of Atom Sr.

对Ｓｒ原子５ｓｎｄ１Ｄ２（ｎ＝２２～２７），｜ｍ｜＝０，１，２各Ｒｙｄｂｅｒｇ态的场电离阈作了实验测定和理论计算．讨论了原子场电离过程中的能级Ｓｔａｒｋ位移。

Experimental determinations and theoretic calculations are respectively carried out on the field ionization thresholds at various Rydberg states of atom Sr 5snd 1D 2( n=22～27),|m|= 0,1,2. Any possible impact upon field ionization made by such factors as Stark shift of energy level in the process of field ionization, adiabatic or diabatic passage of ionization and environmental thermal radiation is discussed.