FIELD: it is used for registration of particles emitted by accelerators and radiation sources. SUBSTANCE: scintillator is made of silver and thallium halogenides taken in ratio (mass %): silver chloride 22.00 - 27.00; silver bromide 77.96 - 72.499; silver iodide 0.010 - 0.500; thallium ion 0.010 - 0.001. Technical result: nonhygroscopicinorganic scintillator has resolution time of no less than 20 ns and light output 50 -60 % of stilbene. EFFECT: improved operational characteristics. 1 dwg.