https://doi.org/10.1140/epjd/e2018-90527-6
Regular Article
Semiclassical two-step model for ionization of the hydrogen molecule by a strong laser field★
1
Institut für Theoretische Physik, Leibniz Universität Hannover,
30167
Hannover, Germany
2
Institute for Nuclear Research, Hungarian Academy of Sciences,
4001
Debrecen, Hungary
3
ELI-HU Nonprofit Ltd.,
Dugonics tér 13,
6720
Szeged, Hungary
a e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
28
September
2018
Received in final form:
7
December
2018
Published online: 19 February 2019
Abstract
We extend the semiclassical two-step model for strong-field ionization that describes quantum interference and accounts for the Coulomb potential beyond the semiclassical perturbation theory to the hydrogen molecule. In the simplest case of the molecule oriented along the polarization direction of a linearly polarized laser field, we predict significant deviations of the two-dimensional photoelectron momentum distributions and the energy spectra from the case of atomic hydrogen. Specifically, for the hydrogen molecule the electron energy spectrum falls off slower with increasing energy, and the holographic interference fringes are more pronounced than for the hydrogen atom at the same parameters of the laser pulse.
Contribution to the Topical Issue “Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (2018)”, edited by Károly Tőkési, Béla Paripás, Gábor Pszota, and Andrey V. Solov’yov.
© EDP Sciences / Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature, 2019
