One-Electron Ionization of Multielectron Systems in Strong Nonresonant Laser Fields

Date
Authors
Spanner, Michael
Patchkovskii, Serguei
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
We present a novel approach to calculating strong field ionization dynamics of multielectron molecular targets. Adopting a multielectron wavefunction ansatz based on field-free ab initio neutral and ionic multielectron states, a set of coupled time-dependent single-particle Schroedinger equations describing the neutral amplitude and continuum electron are constructed. These equations, amenable to direct numerical solution or further analytical treatment, allow one to study multielectron effects during strong field ionization, recollision, and high harmonic generation. We apply the method to strong field ionization of CO_2, and suggest the importance of intermediate core excitation to explain previous failure of analytical models to reproduce experimental ionization yields for this molecule.
Comment: 25 pages, 6 figures
Keywords
Physics - Atomic Physics, Physics - Chemical Physics
Citation
Collections