Dynamics of recollisions for the double ionization of atoms in intense laser fields

TL;DR

This paper models the electron-electron recollision dynamics during double ionization in intense laser fields using an area-preserving map, revealing insights into the probability and efficiency of recollisions.

Contribution

It introduces a novel phase space map approach to analyze recollision dynamics, providing a new perspective on double ionization processes in strong laser fields.

Findings

Recollision statistics can be represented by an area-preserving map.

Phase portraits reveal the dynamics and likelihood of recollisions.

The approach offers insights into the efficiency of electron recollisions.

Abstract

We investigate the dynamics of electron-electron recollisions in the double ionization of atoms in strong laser fields. The statistics of recollisions can be reformulated in terms of an area-preserving map from the observation that the outer electron is driven by the laser field to kick the remaining core electrons periodically. The phase portraits of this map reveals the dynamics of these recollisions in terms of their probability and efficiency.