This article presents a comparative study of scintillation and radiation characteristics for a series of new and known plastic scintillators. About 70 new scintillators have been measured. Polystyrene scintillators containing 20% 1-methylnaphthalene + 2% pTP + 0.05% POPOP and 20% 1-methylnaphthalene + 2% pTP + 0.05% POPOP + 0.02% K-27 revealed the maximum radiation resistance, about 7–9 Mrad.
The radiation hardnesses of some known and new liquid scintillators and capillary fibers filled with them were studied. The scintillation efficiency of a liquid scintillator based on 1-methylnaphtalene with R39 dye was found to fall by 30% at a dose of 190 Mrad. The radiation hardness of thin liquid-core scintillating fibers filled with this scintillator exceeds 60 Mrad.
The radiation resistance of some new liquid scintillators and capillaries filled with liquid scintillators has been presented. It was found that the scintillation efficiency of the liquid scintillator based on 1-methylnaphthalene with a new dye R39 fell only by 30% at the dose of 190 Mrad and the radiation resistance of thin liquid-core scintillating fibers exceeded 60 Mrad.
This is a comparative study of the scintillation and radiation characteristics of known and new plastic scintillators. About seventy new scintillators were tested. The radiation resistances of some common scintillators versus dose were studied. The parameters of scintillators with radiation resistances of 7-9 Mrad are Listed. This group includes polystyrene-based scintillators doped with 20% 1-methylnaphthalene+2% pTP+0.05% POPOP and 20% 1-methylnaphthalene+2% pTP+0.05% POPOP+0.02% K-27.