Plastic Scintillators Based on Polymethyl Methacrylate: A Review

摘要

The scintillation properties of plastic scintillators based on polymethyl methacrylate with various luminescent dyes are considered. It is shown that replacing the naphthalene conventionally used in these scintillators as a secondary solvent with octadeuteronaphthalene and 1,3-divinylbenzene will not alter either their scintillation efficiency and optical transparency, or their thermal, light, and radiation-damage stability; replacing it with l,l,3-trimethyl-3-phenylindan, however, improves all these characteristics. It is demonstrated that n-terphenyl, 2,5-diphenyloxazole, 2-biphenyl-5-phenyl-1,3-oxazole, 2-biphenyl-5-(α-naphthyl)-1,3-oxazole, 2-phenyl-5-(4-biphenylyl)-l,3,4-oxadiazole, and 2-(4'-tret-butylphenyl)-5-(4''-biphenylyl)-l,3,4-oxadiazole can be used as luminescent activators, and n-bis-(o-methylstyryl)-benzene and l,4-di-(5-phenyl-2-oxazolyl)-benzene are applicable as wavelength shifters.