N.N. Beklemishev - Dr. Sc. (Phys.-Math.), Professor, Head of Department of Physics, Russian State Technological University. E-mail: nnbeklem@mati.ru S.A. Kuznetsov - Post-graduate Student, Russian State Technological University. E-mail: kuznetsov_s_a@mail.ru A.P. Zaharov - Post-graduate Student, Kazan Research Center of RAS. E-mail: alex.zakharov88@mail.ru N.V. Kalenova - Ph. D. (Phys.-Math.), Deputy Head of Department of Physics, Russian State Technological University. E-mail: perepljuika@bk.ru