222 citations · 1k across the 15 of their papers we have counts for
14 papers · 1 filter
Angle-resolved time delays for shake-up ionization of helium
Stefan Donsa, Manuel Ederer, Renate Pazourek +2
Recent angle-resolved RABBITT experiments have shown that the photoionization time delay depends on the emission angle of the photoelectron. In this work we demonstrate that for ph…
Anomalous Fano Profiles in External Fields
Alejandro Zielinski, Vinay Pramod Majety, Stefan Nagele +3
We show that external control of Fano resonances in general leads to complex Fano -parameters. Fano line shapes of photo-electron and transient absorption spectra in presence of…
Probing time-ordering in two-photon double ionization of helium on the attosecond time scale
Renate Pazourek, Stefan Nagele, Joachim Burgdörfer
We show that time ordering underlying time-dependent quantum dynamics is a physical observable accessible by attosecond streaking. We demonstrate the extraction of time ordering fo…
Time-resolved photoemission using attosecond streaking
Stefan Nagele, Renate Pazourek, Michael Wais +2
We theoretically study time-resolved photoemission in atoms as probed by attosecond streaking. We review recent advances in the study of the photoelectric effect in the time domain…
Attosecond streaking of Cohen-Fano interferences in the photoionization of H
Qi-Cheng Ning, Liang-You Peng, Shu-Na Song +5
We present the first numerical simulation of the time delay in the photoionization of the simplest diatomic molecule H as observed by attosecond streaking. We show that the s…
Time delays for attosecond streaking in photoionization of neon
Johannes Feist, Oleg Zatsarinny, Stefan Nagele +5
We revisit the time-resolved photoemission in neon atoms as probed by attosecond streaking. We calculate streaking time shifts for the emission of 2p and 2s electrons and compare t…
Photoionization of helium by attosecond pulses: extraction of spectra from correlated wave functions
Luca Argenti, Renate Pazourek, Johannes Feist +5
We investigate the photoionization spectrum of helium by attosecond XUV pulses both in the spectral region of doubly excited resonances as well as above the double ionization thres…
Attosecond streaking of correlated two-electron transitions in helium
Renate Pazourek, Stefan Nagele, Johannes Feist +1
We present fully ab initio simulations of attosecond streaking for ionization of helium accompanied by shake-up of the second electron. This process represents a prototypical case…
Probing scattering phase shifts by attosecond streaking
Renate Pazourek, Stefan Nagele, Katharina Doblhoff-Dier +4
Attosecond streaking is one of the most fundamental processes in attosecond science allowing for a mapping of temporal (i.e. phase) information on the energy domain. We show that o…
Universal features in sequential and nonsequential two-photon double ionization of helium
R. Pazourek, J. Feist, S. Nagele +4
We analyze two-photon double ionization of helium in both the nonsequential and sequential regime. We show that the energy spacing between the two emitted electrons provides the ke…
Time-resolved photoemission by attosecond streaking: extraction of time information
Stefan Nagele, Renate Pazourek, Johannes Feist +4
Attosecond streaking of atomic photoemission holds the promise to provide unprecedented information on the release time of the photoelectron. We show that attosecond streaking phas…
Electron correlation in two-photon double ionization of helium from attosecond to FEL pulses
Johannes Feist, Renate Pazourek, Stefan Nagele +4
We investigate the role of electron correlation in the two-photon double ionization of helium for ultrashort XUV pulses with durations ranging from a hundred attoseconds to a few f…
Probing Electron Correlation via Attosecond XUV Pulses in the Two-Photon Double Ionization of Helium
J. Feist, S. Nagele, R. Pazourek +4
Recent experimental developments of high-intensity, short-pulse XUV light sources are enhancing our ability to study electron-electron correlations. We perform time-dependent calcu…
Nonsequential two-photon double ionization of helium
J. Feist, S. Nagele, R. Pazourek +4
We present accurate time-dependent ab initio calculations on fully differential and total integrated (generalized) cross sections for the nonsequential two-photon double ionization…