DOIAbstract
The plastic scintillators SCSN-38, SCSN-81T, 3HF in polystyrene and a PMMA based Polivar scintillator show a loss in light yield when operated in air or oxygen. Both the fluorescence of the base material polystyrene or the PMMA admixture naphtalene as well as that of the dyes is reduced. The quenching ratio is proportional to the partial pressure of the surrounding oxygen. The maximum overall quenching amounts to 11.1% for SCSN-38 in one atmosphere of oxygen when excited with light of 262 nm
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