Simulation of angular resolved RABBITT measurements in noble gas atoms

Abstract

We simulate angular resolved RABBITT (Reconstruction of Attosecond Beating By Interference of Two-photon Transitions) measurements on valence shells of noble gas atoms (Ne, Ar, Kr, and Xe). Our non-perturbative numerical simulation is based on solution of the time-dependent Schrödinger equation for a target atom driven by an ionizing XUV and dressing IR fields. From these simulations we extract the angular dependent magnitude and phase of the RABBITT oscillations and deduce the corresponding angular anisotropy β parameter and Wigner time delay ${\tau }_W$ for the single XUV photon absorption which initiates the RABBITT process. Said β and ${\tau }_W$ parameters are compared with calculations in the random phase approximation with exchange (RPAE) which includes inter-shell correlation. This comparison is used to test various effective potentials employed in the one-electron TDSE. In lighter atoms (Ne and Ar), several effective potentials are found to provide accurate simulation of RABBITT measurements for a wide range of photon energies up to 100 eV above the valence shell threshold. In heavier atoms (Kr and Xe), the onset of strong correlation with the d-shell restricts the validity of the single active electron approximation to several tens of eV above the valence shell threshold.

References in corpus (13)

• Photoionization in the time and frequency domain
• Theory of attosecond delays in laser-assisted photoionization
• Delay in atomic photoionization
• Time delay in valence shell photoionization of noble gas atoms
• Time delay between photoemission from the 2p and 2s subshells of Neon
• Time delays for attosecond streaking in photoionization of neon
• Diagrammatic approach to attosecond delays in photoionization
• Study of attosecond delays using perturbation diagrams and exterior complex scaling
• Parameterized optimized effective potential for the ground state of the atoms He through Xe
• iSURF: A family of infinite-time surface flux methods
• Relativistic calculations of angular dependent photoemission time delay
• Angle-resolved RABBIT: theory and numerics
• Attosecond photoionization dynamics in neon

Cited by in corpus (15)

• Fano's propensity rule in angle-resolved attosecond pump-probe photoionization
• Attosecond photoionization dynamics in the vicinity of the Cooper minima in argon
• Decomposition of the transition phase in multi-sideband RABBITT schemes
• Many-body calculations of two-photon, two color matrix elements for attosecond delays
• Strongly resonant RABBITT on lithium
• Revealing the target electronic structure with under-threshold RABBIITT
• Propensity rules and interference effects in laser-assisted photoionization of helium and neon
• Reconstruction of attosecond pulses in the presence of interfering dressing fields using the 100 kHz ELI-ALPS HR-1 laser system
• Angle-resolved time delays for shake-up ionization of helium
• Polarization control of RABBITT in noble gas atoms
• Correlation enhancement of high-order harmonics generation in Xe
• Phase retrieval from angular streaking of XUV atomic ionization
• Effect of electron correlations on attosecond photoionization delays in the vicinity of the Cooper minima of argon
• Anisotropic Molecular Photoemission Dynamics Part. I Wigner meets the RABBIT
• General properties of the RABBITT at parity mixing conditions