摘要
The electron detachment of negative hydrogen ions exposed to a few-cycle linearly polarized laser pulse is investigated in the context of the strong field approximation evaluated by the saddle-point method.The results show that the angular distributions of the laser-induced photoelectron obtained by the saddle-point method are in good agreement with both the experimental results and the numerical-integration results.More importantly,we show that the unusual maximum in the angular distributions of photoelectrons for negative hydrogen ions can be explained by the quantum interference effect based on the saddle-point method.
作者
陈建宏
赵松峰
李小勇
周效信
CHEN Jian-Hong;ZHAO Song-Feng;LI Xiao-Yong;ZHOU Xiao-Xin(College of Physics and Electronic Engineering,and Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province,Northwest Normal University,Lanzhou 730070;Department of Physics,Lanzhou City University,Lanzhou 730070)
基金
Supported by the National Natural Science Foundation of China under Grant Nos 11044007,11164025 and 11064013
the Specialized Research Fund for the Doctoral Program of Higher Education of China under Grant Nos 20096203110001 and 20116203120001
the Foundation of Northwest Normal University under Grant No NWNU-KJCXGC-03-62.
