Abstract
Protection effects by aromatic compounds in irradiated liquid n-dodecane were studied as a model experiment for the radiolysis of aliphatic polymers. Final products of γ-radiolysis were analyzed by gas chromatography, while reactivity of additives towards reactive intermediate species was analyzed by pulse radiolysis. The yield of scission products was well reduced by increase of the degree of aromaticity and concentration of additives; moreover, the higher the degree of aromaticity of additive, the higher was the reactivity of additive towards excited molecules, radical cations, and electrons. In conclusion, reactivity between additive and reactive intermediate species is an important factor of radiation protection.
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