Analysis of the time-domain spectrum of hydrogen in electric field near helium surface  

作　　者：龚晓青 杨光参 

机构地区：[1]School of Physics and Electronic Information Engineering,Wenzhou University

出　　处：《Chinese Optics Letters》2011年第4期5-8,共4页中国光学快报（英文版）

基　　金：partially supported by the State Key Development Program of the Basic Research of China(No. 2007CB310405);the National Natural Science Foundation of China(No.10974146);the Zhejiang Provincial Natural Science Foundation(No.Y6090222)

摘　　要：The Ryderberg electronic wave packet dynamics of hydrogen atom near helium surface in an electric field is investigated using the semiclassical method. The autocorrelation function is calculated when the photoionized electron is excited by a short laser pulse for different atom-surface separations. The results show that new recurrences appear because of the helium surface, and the number of recurrent peaks increases with the decrease in atom-surface distance. The new feature is ascribed to the bifurcation of new closed orbits in the classical dynamics of the photoionized electron. Therefore, surface properties have a significant effect on the spectrum of nearby atoms or ions.The Ryderberg electronic wave packet dynamics of hydrogen atom near helium surface in an electric field is investigated using the semiclassical method. The autocorrelation function is calculated when the photoionized electron is excited by a short laser pulse for different atom-surface separations. The results show that new recurrences appear because of the helium surface, and the number of recurrent peaks increases with the decrease in atom-surface distance. The new feature is ascribed to the bifurcation of new closed orbits in the classical dynamics of the photoionized electron. Therefore, surface properties have a significant effect on the spectrum of nearby atoms or ions.

关 键 词：Atomic spectroscopy ATOMS Electric fields HELIUM HYDROGEN PHOTOIONIZATION Regression analysis Surface properties 

分 类 号：O562.3[理学—原子与分子物理]