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Time-resolved experiments on the exciton transfer phenomenon in molten polyethylene

Authors
Journal
International Journal of Radiation Applications and Instrumentation Part C Radiation Physics and Chemistry
1359-0197
Publisher
Elsevier
Publication Date
Volume
32
Issue
3
Identifiers
DOI: 10.1016/1359-0197(88)90051-3

Abstract

Abstract The paper presents a time-resolved study of rapid exciton migration in polyethylene (PE) by means of pulse radiolysis and laser photolysis experiments. Despite the high viscosity of molten PE blended with substances such as a phenol, diphenylamine or benzophenone the most important part of the radiation-generated scavenger radicals is formed in times <40 ns. By comparison with laser photolysis experiments with molten PE and liquid-state pulse radiolysis in alkanes the rapid radical formation is explained in terms of the intramolecular exciton migration with subsequent dissociative transfer to the additive.

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