N.А. Matveeva - Post-graduate Student, Assistant, Department of Laser Physics, Federal State Autonomous Educational of Higher Professional Education «Volgograd State University». E-mail: nataly.matveeva@mail.ru V. V. Yatsishen - Dr.Sc. (Eng.), Professor, Department of Forensic Expertise and Physical Materials Science, Federal State Autonomous Educational of Higher Professional Education «Volgograd State University». E-mail: yatsishen@yandex.ru