Ultrafast Laser-Driven Excitation Dynamics in Ne: An Ab Initio Time-Dependent R-Matrix Approach

被引：30
|
作者：
Lysaght, M. A. [1 ]
Burke, P. G. [1 ]
van der Hart, H. W. [1 ]
机构：
[1] Queens Univ Belfast, Ctr Theoret Atom Mol & Opt Phys, Belfast BT7 1NN, Antrim, North Ireland
来源：
PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 25期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1103/PhysRevLett.101.253001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
An attosecond pump-probe scheme that combines the use of a free-electron laser pulse with an ultrashort pulse is applied in order to explore the ultrafast excitation dynamics in Ne. We describe the multielectron dynamics using a new nonperturbative time-dependent R-matrix theory. This theory enables the interaction of ultrashort light fields with multielectron atoms and atomic ions to be determined from first principles. By probing the emission of an inner 2s electron from Ne we are also able to study the bound state population dynamics during the free-electron laser pulse.
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页数：4
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