Deflections of photoelectron classical trajectories in screened Coulomb potentials of H_2^+  

作　　者：秦博雅 王培杰 何峰 

机构地区：[1]Zhiyuan College, Shanghai Jiao Tong University [2]Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Department of Physics, Capital Normal University [3]Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics and Astronomy,IFSA Collaborative Innovation Center, Shanghai Jiao Tong University

出　　处：《Chinese Physics B》2015年第11期59-62,共4页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11104180,11175120,11121504,and 11322438);the Fok Ying-Tong Education Foundation for Young Teachers in the Higher Education Institutions of China(Grant No.131010)

摘　　要：The photoelectron momentum distribution of H＋ in circularly polarized laser fields is studied based on classical trajectory calculations. We screen Coulomb potentials at different radii, and trace trajectories of an ensemble of electrons in such screened Coulomb potentials and circularly polarized laser fields. Simulations show that electron trajectories are bent by Coulomb fields, resulting in the laser-intensity-dependent drift of photoelectron momentum distributions in the laser polarization plane. This study intuitively explains how Coulomb potentials modify photoelectron momenta.The photoelectron momentum distribution of H＋ in circularly polarized laser fields is studied based on classical trajectory calculations. We screen Coulomb potentials at different radii, and trace trajectories of an ensemble of electrons in such screened Coulomb potentials and circularly polarized laser fields. Simulations show that electron trajectories are bent by Coulomb fields, resulting in the laser-intensity-dependent drift of photoelectron momentum distributions in the laser polarization plane. This study intuitively explains how Coulomb potentials modify photoelectron momenta.

关 键 词：hydrogen molecular ion photoelectron momentum distribution strong laser field 

分 类 号：O562[理学—原子与分子物理]