Quantum interference in laser-assisted photo-ionization excited by a femtosecond x-ray pulse  

作　　者：葛愉成 

机构地区：[1]School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University

出　　处：《Chinese Physics B》2008年第12期4492-4497,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No 10675014)

摘　　要：The photoelectron energy spectra （PESs） excited by monochromatic femtosecond x-ray pulses in the presence of a femtosecond laser are investigated. APES is composed of a set of separate peaks, showing interesting comb-like structures. These structures result from the quantum interferences between photoelectron wave packets generated at different times. The width and the localization of each peak as well as the number of peaks are determined by all the laser and x-ray parameters. Most of peak heights of the PES are higher than the classical predictions.The photoelectron energy spectra （PESs） excited by monochromatic femtosecond x-ray pulses in the presence of a femtosecond laser are investigated. APES is composed of a set of separate peaks, showing interesting comb-like structures. These structures result from the quantum interferences between photoelectron wave packets generated at different times. The width and the localization of each peak as well as the number of peaks are determined by all the laser and x-ray parameters. Most of peak heights of the PES are higher than the classical predictions.

关 键 词：femtosecond x-ray pulse PHOTO-IONIZATION quantum interference photoelectron energy spectrum 

分 类 号：O434.1[机械工程—光学工程]