Effect of γ-rays on the properties of the cellulose nitrate detector

摘要: Abstract The process of low-temperature (77 K) γ-radiolysis the cellulose nitrate track-registration detector ionizing radiation has been studied by electron spin resonance spectroscopy. main radicals formed during radiation-induced destruction are NO2 and polymeric matrix radicals, observed for first time, stable up to 373 K. concentration these last products at 300 K did not exceed 2% total measured 77 It was found that enhanced alkaline etching γ-irradiated due only direct macromolecular chains but also initiated active centres (of both radical non-radical nature) generated in molecules as a result radiation-chemical reactions. data on allowed estimation average dosage track α-particle with Ex = 2.8 MeV (D1 250 kGy) diameter (40–50 A).