Wave-packet propagation based calculation of above-threshold ionization in the x-ray regime
Abstract
We investigate the multi-photon process of above-threshold ionization for the light elements hydrogen, carbon, nitrogen and oxygen in the hard x-ray regime. Numerical challenges are discussed and by comparing Hartree-Fock-Slater calculations to configuration-interaction-singles results we justify the mean-field potential approach in this regime. We present a theoretical prediction of two-photon above-threshold-ionization cross sections for the mentioned elements. Moreover, we study how the importance of above-threshold ionization varies with intensity. We find that for carbon, at x-ray intensities around , two-photon above-threshold ionization of the K-shell electrons is as probable as one-photon ionization of the L-shell electrons.
Keywords
Cite
@article{arxiv.1502.05529,
title = {Wave-packet propagation based calculation of above-threshold ionization in the x-ray regime},
author = {Matthew Tilley and Antonia Karamatskou and Robin Santra},
journal= {arXiv preprint arXiv:1502.05529},
year = {2015}
}
Comments
13 pages, 4 figures, 1 table