222 citations · 1k across the 12 of their papers we have counts for
12 papers
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…
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…
Intracycle and Intercycle Interferences in Above-Threshold Ionization: the Time Grating
Diego G. Arbo, Kenichi L. Ishikawa, Klaus Schiessl +2
Within a semiclassical description of above-threshold ionization (ATI) we identify the interplay between intracycle and intercycle interferences. The former is imprinted as a modul…
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…