1. Institute of Optical Sensor Systems; German Aerospace Center (DLR); Rutherfordstr. 2 12489 Berlin Germany
2. Petersburg Nuclear Physics Institute; NRC KI, Leningrad region; 188300 Gatchina Russia
3. Institute of Physics and Technology; Ural Federal University; 620002 Ekaterinburg Russia
4. Humboldt-Universität zu Berlin; 12489 Berlin Germany