TY JOUR TI STUDY OF THE BASIC PHYSICAL CHARACTERISTICS OF IONIZING RADIATIONS BY THE METHOD OF COMBINATION REAL AND VIRTUAL EXPERIMENTS KW characteristics of ionizing radiation KW units of measure of characteristics of ionizing radiation KW real and virtual experiment JO NATURAL AND MAN-MADE RISKS (PHYSICO-MATHEMATICAL AND APPLIED ASPECTS) AU Danilov, I.L. PY 2014 IS 2014 PB Saint-Petersburg University of State Fire Service of Emercom of Russia