Observing electron-correlation features in two-photon double ionization of helium

被引：4
|
作者：
Jiang, Wei-Chao [1 ,2 ]
Nagele, Stefan [2 ]
Burgdorfer, Joachim [2 ]
机构：
[1] Shenzhen Univ, Coll Phys & Energy, Shenzhen 518060, Peoples R China
[2] Vienna Univ Technol, Inst Theoret Phys, Wiedner Hauptstr 8-10, A-1040 Vienna, Austria
来源：
PHYSICAL REVIEW A | 2017年 / 96卷 / 05期
基金：
奥地利科学基金会;
关键词：
DEPENDENT SCHRODINGER-EQUATION; THRESHOLD; SPECTRUM; DYNAMICS;
D O I：
10.1103/PhysRevA.96.053422
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
By numerically solving the time-dependent Schrdinger equation for helium in its full dimensionality, we determine the joint momentum spectrum along the polarization direction P(k(1z), k(2z)) for two-photon double ionization (TPDI). We identify features uniquely attributable to dynamical correlation effects in the double continuum. We show that some of the correlation signatures persist in integrated measures, in particular the emission asymmetry, that should become accessible with upcoming XUV light sources. We also compare with predictions of analytic models for TPDI which neglect such final-state correlations.
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页数：8
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