1. Institute of the Applied Physics Problems, Kurchatov St., 7, 220108, Minsk, Belarus
2. Sumy University, R. Korsakov St., 2, 40007, Sumy, Ukraine
3. Department of Electrical Devices and High Voltages Technology, Lublin University of Technology Nadbystrzycka 38D, 20-618 Lublin, Poland
4. Institute of Transport, Combustion Engines and Ecology, Lublin University of Technology Nadbystrzycka 36, 20-618 Lublin, Poland