D.G. Kovtun - Ph. D. (Phys.-Math.), Associate Professor, Department «Physics», Volgograd State Technical University E-mail: kdmob74@gmail.com S.A. Alikov - Post-graduate Student, Department «Physics», Volgograd State Technical University E-mail: sputnik_as@mail.ru A.G. Shein - Dr. Sc. (Phys.-Math.), Professor, Department «Physics», Volgograd State Technical University E-mail: professor39@mail.ru D.L. Yeskin - Ph. D. (Phys.-Math.), Associate Professor, Volgograd Academy of Internal Affairs Ministry of RF E-mail: yd38@bk.ru

D.V. Kolodko1, I.A. Sorokin2, V.P. Tarakanov3

1,2 Fryazino branch of Kotelnikov Institute of Radioengineering and Electronics of RAS (Fryazino, Russia)

3  Joint Institute of High Temperatures of RAS (Moscow, Russia)