Abstract
AbstractA simplified model of low temperature radiolysis of hydrocarbons sufficient for adequate interpretation of radiation chemical and positron annihilation data is suggested. The model describes non‐monotonic accumulation of trapped electrons and other radiolytic products with the absorbed dose in γ ‐radiolysis experiments, as well as variation of the shape of e+ annihilation lifetime spectra with time of the measurements. The developed model is compared with experiments in polyethylene and n‐tridecane. It is shown that intratrack radicals significantly affect Ps formation and time evolution of the e+ states. Some values of intratrack reaction rate constants are estimated. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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