A. A. Alimov - Post-graduate Student, Department of General and Nuclear Physics, Institute of Nuclear Power and Technical Physics, Nizhny Novgorod State Technical University n.a. R.E. Alekseev. E-mail: chiker007@mail.ru A. A. Radionov - Ph.D. (Eng.), Professor, Head of Department of General and Nuclear Physics, Institute of Nuclear Power and Technical Physics, Nizhny Novgorod State Technical University n.a. R.E. Alekseev. E-mail: physics@nntu.nnov.ru