Attosecond cascades and time delays in one-electron photoionization

被引：22

作者：

Sukiasyan, Suren ^{[1
]}

Ishikawa, Kenichi L. ^{[2
]}

Ivanov, Misha ^{[1
,3
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

[2] Univ Tokyo, Grad Sch Engn, Photon Sci Ctr, Bunkyo Ku, Tokyo 1138656, Japan

[3] Max Born Inst, D-12489 Berlin, Germany

来源：

PHYSICAL REVIEW A | 2012年 / 86卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

IONIZATION;

D O I：

10.1103/PhysRevA.86.033423

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present time-resolved ab initio study of the attosecond dynamics of electron-electron correlation during single-electron, single XUV-photon ionization of an excited helium atom. We identify multiple time scales in these dynamics, caused by the interplay of the initial shake-up excitation with the excitation cascades induced by the postionization interaction of the outgoing electron with the core. The time scales and the structure of these excitation cascades are directly linked to the time it takes the "active" continuum electron, lifted from a deeper bound orbital, to traverse the orbit of the "passive" electron residing in the outer orbit.

引用

页数：6

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