Dynamic Interference Photoelectron Spectra in Double Ionization:Numerical Simulation of 1D Helium  

作　　者：孙甫 魏东 张贵忠 丁欣 姚建铨 

机构地区：[1]College of Precision Instrument and Optoelectronics Engineering,Key Lab of Optoelectronic Information Technology(Ministry of Education),Tianjin University

出　　处：《Chinese Physics Letters》2016年第12期36-39,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 61178028,11674243 and 11674242;the National Basic Research Program of China under Grant No 2015CB755403

摘　　要：We report our numerical simulation on the dynamic interference photoelectron spectra for a one-dimensional （1D） He model exposed to intense ultrashort extreme ultraviolet （XUV） laser pulses. The results demonstrate an unambiguous interference feature in the photoelectron spectra, and the interference is unveiled to originate from the dynamic Stark effect. The interference photoelectron spectra are prompted for intense sub-femtosecond XUV laser pulses in double ionization. The stationary phase picture is corroborated qualitatively in the two-electron system. The ability of probing the dynamic Stark effect by the photoelectron spectra in a pragmatic experiment of single-photon double ionization of He may shed light on further investigation on multi-electron atoms and molecules.We report our numerical simulation on the dynamic interference photoelectron spectra for a one-dimensional （1D） He model exposed to intense ultrashort extreme ultraviolet （XUV） laser pulses. The results demonstrate an unambiguous interference feature in the photoelectron spectra, and the interference is unveiled to originate from the dynamic Stark effect. The interference photoelectron spectra are prompted for intense sub-femtosecond XUV laser pulses in double ionization. The stationary phase picture is corroborated qualitatively in the two-electron system. The ability of probing the dynamic Stark effect by the photoelectron spectra in a pragmatic experiment of single-photon double ionization of He may shed light on further investigation on multi-electron atoms and molecules.

关 键 词：of on in STARK Dynamic Interference Photoelectron Spectra in Double Ionization:Numerical Simulation of 1D Helium IS that for 

分 类 号：O562.4[理学—原子与分子物理]