1. Institute for Nuclear Problems, Belarus State University, Bobruiskaya 11, 220030 Minsk, Belarus
2. Center for Physical Sciences and Technology, A. Gostauto 11, Vilnius LT-01108, Lithuania
3. Department of Physics, Belarus State University, Nezalezhnastsi Avenue 4, 220030 Minsk, Belarus
4. Frascati National Laboratory, National Institute of Nuclear Physics, E. Fermi 40, 00044 Frascati, Italy
5. Institute of Electronic Structure and Laser, Foundation for Research and Technology Hellas, P.O. Box 1385, 71110 Heraklion, Crete, Greece