Attosecond Streaking of Correlated Two-Electron Transitions in Helium

Renate Pazourek, Johannes Feist, Stefan Nagele, and Joachim Burgdörfer

Phys. Rev. Lett. 108, 163001 – Published 20 April 2012

Abstract

We present fully ab initio simulations of attosecond streaking for ionization of helium accompanied by shakeup of the second electron. This process represents a prototypical case for strongly correlated electron dynamics on the attosecond time scale. We show that streaking spectroscopy can provide detailed information on the Eisenbud-Wigner-Smith time delay as well as on the infrared-field dressing of both bound and continuum states. We find a novel contribution to the streaking delay that stems from the interplay of electron-electron and infrared-field interactions in the exit channel. We quantify all the contributions with attosecond precision and provide a benchmark for future experiments.

Received 13 December 2011

DOI:https://doi.org/10.1103/PhysRevLett.108.163001

Authors & Affiliations

Renate Pazourek^1,*, Johannes Feist², Stefan Nagele^1,†, and Joachim Burgdörfer¹

¹Institute for Theoretical Physics, Vienna University of Technology, 1040 Vienna, Austria, EU
²ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA