A.A. Dyachenko - Ph.D. (Eng.), Senior Research Scientist, V.A. Kotelnikov-s Institute of Radio Engineering and Electronics of RAS. E-mail: arhip36@bk.ru O.E. Shushpanov - Dr.Sc. (Phys.-Math.), Professor, Chief Research Scientist, V.A. Kotelnikov-s Institute of Radio Engineering and Electronics of RAS. E-mail: oeshome@mail.ru

V.I. Ponomarenko – Dr.Sc.(Phys.-Math.), Professor, 
Department of Experimental Physics, V.I. Vernadsky Crimean Federal University (Simferopol) E-mail: vponom@gmail.com

I.M. Lagunov – Senior Lecturer, 
Department of Experimental Physics, V.I. Vernadsky Crimean Federal University (Simferopol)
E-mail: lagunov.igor@gmail.com