1. Institute of Resource Ecology, Helmholtz - Zentrum Dresden - Rossendorf, Bautzner Landstraße 400, Dresden 01328, Germany
2. Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
3. Computational Science Group (FWCC), Department of Information Services and Computing (FWC), Helmholtz - Zentrum Dresden - Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany