A.M. Bashkirev - Post-graduate Student, Department «Physics», Volgograd State Technical University E-mail: alexandr.bashkirev@gmail.com A.G. Shein - Dr. Sc. (Phys.-Math.), Professor, Department «Physics», Volgograd State Technical University E-mail: professor39@mail.ru D.G. Kovtun - Ph. D. (Phys.-Math.), Associate Professor, Department «Physics», Volgograd State Technical University E-mail: kdmob74@gmail.com

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

A.M. Bashkirev – Post-graduate Student, Volgograd State Technical University

E-mail: alexandr.bashkirev@gmail.com

A.G. Shein – Dr.Sc. (Phys.-Math.), Professor, Volgograd State Technical University E-mail: professor39@mail.ru