S.A. Kapustin – Post-graduate Student,
Nizhny Novgorod State Technical University n.a. R.E. Alekseev
A.V. Lvutin – Post-graduate Student,
Nizhny Novgorod State Technical University n.a. R.E. Alekseev
Yu.V. Raevskaya – Ph.D. (Eng.), Associate Professor,
Nizhny Novgorod State Technical University n.a. R.E. Alekseev
А.А. Titarenko – Dr.Sc. (Eng.), Professor,
Nizhny Novgorod State Technical University n.a. R.E. Alekseev
E-mail: physics@nntu.nnov.ru; Kapustin_1994@mail.ru