Photoelectron momentum distributions of triatomic CO_(2)molecules by circularly polarized attosecond pulses

作     者：Si-Qi Zhang Jun Zhang Xin-Yu Hao Jing Guo Aihua Liu Xue-Shen Liu 张思琪;张军;郝欣宇;郭静;刘爱华;刘学深

作者机构：Institute of Atomic and Molecular PhysicsJilin UniversityChangchun 130012China School of PhysicsHarbin Institute of TechnologyHarbin 150001China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2024年第33卷第10期

页      面：220-225页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11974007,12074146,12074142,61575077,12374265,11947243,91850114,and 11774131) the Natural Science Foundation of Jilin Province of China(Grant No.20220101016JC) 

主　　题：molecular-frame photoelectron momentum distributions single-active-electron approximation frames ultrafast photoionization models 

摘      要：Molecular-frame photoelectron momentum distributions(MF-PMDs)have been studied for imaging molecular *** investigate the MF-PMDs of CO_(2)molecules exposed to circularly polarized(CP)attosecond laser pulses bysolving the time-dependent Schrodinger equations based on the single-active-electron approximation *** showthat high-frequency photons lead to photoelectron diffraction patterns,indicating molecular *** diffractionpatterns can be illustrated by the ultrafast photoionization ***,for the driving pulses with 30 nm,a deviationbetween MF-PMDs and theoretically predicted results of the ultrafast photoionization models is produced because theCoulomb effect strongly influences the molecular ***,the MF-PMDs rotate in the same directionas the helicity of driving laser *** results also demonstrate that the MF-PMDs in a CP laser pulse are the superpositionof those in the parallel and perpendicular linearly polarized *** simulations efficiently visualize molecularorbital geometries and structures by ultrafast photoelectron ***,we determine the contribution of HOMOand HOMO-1 orbitals to ionization by varying the relative phase and the ratio of these two orbitals.