Mattauch, S. [P:(DE-Juel1)130821] ; Rücker, R. [P:(DE-Juel1)VDB95118] ; Korolkov, D. [P:(DE-Juel1)VDB58597] ; Babcock, E. [P:(DE-Juel1)VDB80920] ; Ioffe, A. [P:(DE-Juel1)130729] ; Brückel, T. [P:(DE-Juel1)130572]