Photoelectron momentum distributions of Ne and Xe dimers in counter-rotating circularly polarized laser fields  

作　　者：Zhi-Xian Lei Qing-Yun Xu Zhi-Jie Yang Yong-Lin He Jing Guo 雷志仙;徐清芸;杨志杰;何永林;郭静(Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China)

机构地区：[1]Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China

出　　处：《Chinese Physics B》2022年第6期291-299,共9页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.12074146)。

摘　　要：The strong-field ionization of dimers is investigated theoretically in counter-rotating circularly polarized laser fields.By numerically solving the two-dimensional(2D)time-dependent Schrödinger equation(TDSE)with the single-electron approximation(SEA)frame,we present the photoelectron momentum distributions(PMDs)and photoelectron angular distribution(PADs)of aligned Ne and Xe dimers.It is found that the PMDs and PADs strongly depend on the time delays by counter-rotating circularly polarized laser pulses.The results can be explained by the ultrafast photoionization model and the evolution of electron wave packets for Ne and Xe dimers.Besides,We make a comparison of PMDs between Ne atom and Ne dimer.

关 键 词：time-dependent Schrödinger equation DIMER photoelectron momentum distributions ultrafast photoionization model 

分 类 号：O469[理学—凝聚态物理]