Radiation processes in plastic scintillators (PSs) are studied to establish that, first, macroradicals are the main quenchers of radiation-induced luminescence in the PSs, and, second, molecular oxygen initiates the decay of macroradicals. Based on these principles, PSs of a new type, whose radiation resistance is by an order of magnitude higher than that of standard polystyrene scintillators, were developed and synthesized. The special nanoporous morphology of the new PSs is a system of open pores and channels, which provide efficient penetration of molecular oxygen into the polymer bulk to produce the antirad effect.
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