2-(2'-HYDROXYPHENYL)BENZOTHIAZOLES, -BENZOXAZOLES, AND -BENZIMIDAZOLES FOR PLASTIC SCINTILLATION APPLICATIONS

摘要

A new series of fluorescent compounds has been tested as dopants for plastic scintillation applications. Several 2-(2'-hydroxyphenyl)benzothiazole, -benzoxazole, and -benzimidazole derivatives have been prepared and studied in a polystyrene matrix. Each derivative has been added to a styrene solution which has been thermally polymerized. The transmittance, fluorescence, and light yield characteristics of these compounds in polystyrene have been determined. Their emission time distributions have also been measured, and the decay time constants have been calculated from these data. In addition, the doped polystyrene samples have been irradiated to a total dose of 10 Mrad, utilizing a Co-60 source in order to evaluate their susceptibility to radiation-induced damage. [References: 27]