Scattering-amplitude phase in spiderlike photoelectron momentum distributions  

作　　者：Jiu Tang Guizhong Zhang Yufei He Xin Ding Jianquan Yao 唐久;张贵忠;何宇飞;丁欣;姚建铨(College of Precision Instrument and Optoelectronics Engineering,Tianjin University,Key Laboratory of Optoelectronic Information Technology,Ministry of Education,Tianjin 300072,China)

机构地区：[1]College of Precision Instrument and Optoelectronics Engineering,Tianjin University,Key Laboratory of Optoelectronic Information Technology,Ministry of Education,Tianjin 300072,China

出　　处：《Chinese Optics Letters》2021年第7期93-98,共6页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos.11674243 and 11674242);the State Key Research Program Grant (No.2017YFB1401201)。

摘　　要：The spiderlike structures in the photoelectron momentum distributions of ionized electrons from the hydrogen atom are numerically simulated by using a semiclassical rescattering model(SRM) and solving the time-dependent Schrodinger equation(TDSE),focusing on the role of the phase of the scattering amplitude.With the SRM,we find that the spiderlike legs shift to positions with smaller transverse momentum values while increasing the phase.The spiderlike patterns obtained by SRM and TDSE are in good agreement upon considering this phase.In addition,the time differences in electron ionization and rescattering calculated by SRM and the saddle-point equations are either in agreement or show very similar laws of variation,which further corroborates the significance of the phase of the scattering amplitude.

关 键 词：photoelectron holography semiclassical rescattering model spiderlike structure 

分 类 号：O562.4[理学—原子与分子物理]