A. V. Speransky - Engineer, Russian Federal Nuclear Center, Sarov. E-mail: Sarov_alexey@mail.ru
S. I. Gerasimov - Dr. Sc. (Phys.-Math.), Department Head, Russian Federal Nuclear Center; Department Head, Sarov Physics and Technology Institute of the National Research Nuclear University «MEPhI», Sarov. Е-mail: s.i.gerasimov@mail.ru
V. I. Erofeyev - Dr.Sc. (Phys.-Math.), Professor, Vice-director of Mechanical Engineering Research Institute of the Russian Academy of Sciences, Nizhny Novgorod. E-mail: erf04@sinn.ru