Influence of Coulomb force between two electrons on double ionization of He-like atoms  

作　　者：Peipei Liu Yongfang Li Jingtao Zhang 刘培培;李永芳;张敬涛(Department of Physics,Shanghai Normal University,Shanghai 200234,China)

机构地区：[1]Department of Physics,Shanghai Normal University,Shanghai 200234,China

出　　处：《Chinese Physics B》2022年第1期235-240,共6页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.11674231 and 12074261);the Shanghai Natural Science Foundation,China(Grant No.20ZR1441600).

摘　　要：In strong-field double ionization,two electrons are ionized by intense laser field.These two electrons move in the laser field and the state is described by a Coulomb-Volkov state,where the repulsive Coulomb state describes the relative motion of the two electrons and the Volkov state describes the center-of-mass motion of the two electrons in the laser field.In the frame of scattering theory,we derive a simple analytical formula of the double ionization of He-like atoms.The effect of the Coulomb force between two electrons on the double ionization process is discussed.Numerical studies disclose that the Coulomb force enhances the ionization rate of high-energy electrons but suppresses the ionization rate of the lowest-energy electrons.

关 键 词：double ionization Coulomb force Coulomb-Volkov state scattering theory 

分 类 号：O56[理学—原子与分子物理] TN24[理学—物理]