I.A. Makeev - Student, Moscow Institute of Physics and Technology (State University). E-mail: makeev@phystech.edu C.P. Skobelev - Dr. Sc. (Phys.-Math.), Associate Professor, Leading Research Scientist, PJSC «Radiofizika» (Moscow), Associate Professor, Moscow Institute of Physics and Technology (State University). E-mail: s.p.skobelev@mail.ru