Interpretation of the time delay in the ionization of Coulomb and two-center systems

Abstract

We consider the time delay of electron detachment from a Coulomb center and two-center systems in the process of ionization. It is shown that the attosecond streaking, most usual method of time delay measure, can be formally described by placing a virtual detector of the arrival time delay at a certain distance from the center of the system. This approach allows derivation of a simple formula for Coulomb-laser coupling that perfectly agrees with the results of numerical solution of the time-dependent Schrodinger equation. The dependence of the time delay upon the energy, the angular momentum projection, and the azimuthal quantum number is studied for the ionization of molecular hydrogen ion. Finally, we propose a physical interpretation of singularities, arising when the formal expression for the time delay is applied to the ionization of molecular hydrogen.

30 pages, 9 figures

References in corpus (3)

• Theory of attosecond delays in laser-assisted photoionization
• Phase-resolved attosecond near-threshold photoionization of molecular nitrogen
• Attosecond streaking of correlated two-electron transitions in helium

Cited by in corpus (12)

• Attosecond delays in molecular photoionization
• Attosecond Coherent Electron Motion in Auger-Meitner Decay
• Time Delay in Molecular Photoionization
• Attosecond pulse shaping around a Cooper minimum
• Electron Correlation Effects in Attosecond Photoionization of CO${}_2$
• Angle-resolved time delay in photoemission of neon
• Angle-resolved time delay in photoemission
• Attosecond streaking of Cohen-Fano interferences in the photoionization of H${}_2^{+}$
• Two-center Interference in the Photoionization Delays of Kr2
• Time delay in XUV/IR photoionization of H${}_2$O
• Angular anisotropy of time delay in XUV/IR photoionization of H${}_2^{+}$
• Time delay of slow electrons by a diatomic molecule described by non-overlapping atomic potentials model