Affiliation: | 1. Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, Erwin‐Schr?dinger‐Stra?e 56, D‐67663 Kaiserslautern, Germany;2. Department of Physics and Astronomy, Uppsala University, Box 516, S‐75120 Uppsala, Sweden;3. Center for Theoretical Chemistry, Ruhr‐University Bochum, D‐44801 Bochum, Germany |