S.B. Makarov – Dr.Sc.(Eng.), Professor, 

Higher School of Applied Physics and Space Technologies of Peter The Great St. Petersburg Polytechnic University E-mail: makarov@cee.spbstu.ru

B.I. Polozhintsev – Ph.D.(Eng.), Associate Professor, 

Higher School of Applied Physics and Space Technologies of Peter The Great St. Petersburg Polytechnic University E-mail: borisp@spbstu.ru

S.V. Volvenko – Associate Professor, 

Higher School of Applied Physics and Space Technologies of Peter The Great St. Petersburg Polytechnic University E-mail: volk@cee.spbstu.ru

S.V. Zavjalov – Ph.D.(Eng.), Associate Professor, 

Higher School of Applied Physics and Space Technologies of Peter The Great St. Petersburg Polytechnic University E-mail: zavyalov_sv@spbstu.ru