1. A.N. Sevchenko Institute of Applied Physical Problems, Belarusian State University, Kurchatova str. 7, 220045 Minsk, Belarus
2. Research Institute for Physical Chemical Problems, Belarusian State University, Leningradskaya str. 14, 220006 Minsk, Belarus
3. Institute of Bioorganic Chemistry, NAS of Belarus, Akademika Kuprevicha str. 5-2, 220141 Minsk, Belarus
4. B.I. Stepanov Institute of Physics, NAS of Belarus, Nezavisimosty ave. 68, 220072 Minsk, Belarus
5. Faculty of Physics, Belarusian State University, Bobruiskaya str. 5, 220006 Minsk, Belarus