Abstract
This contribution characterizes the stability of scintillating resins for ionizing radiation detection that were synthesized with 2-(1-naphthyl)-5-phenyloxazole (α-NPO) or 2-(1-naphthyl)-4-vinyl-5-phenyloxazole (v-NPO) fluor in polystyrene (PS) or poly(4-methyl styrene) (PVT) matrices. Leaching studies of the PS and PVT resins with methyl acetate show a 60 % reduction in luminosity and 80 % reduction in detection efficiency for α-NPO samples; while v-NPO resins retained detection properties. Degradation studies indicate the nitration of PS resins and the fluors after nitric acid exposure, resulting in a 100 % reduction in optical properties; whereas PVT resins with v-NPO fluor maintained 20 % detection efficiency. Heuristics are reported for designing stable scintillating resins.
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Acknowledgments
This work was supported by the Defense Threat Reduction Agency, Basic Research Award #HDTRA1-12-1-0012, to Clemson University.
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Duval, C.E., DeVol, T.A., Wade, E.C. et al. Stability of polymeric scintillating resins developed for ultra-trace level detection of alpha- and beta-emitting radionuclides. J Radioanal Nucl Chem 310, 583–588 (2016). https://doi.org/10.1007/s10967-016-4913-3
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DOI: https://doi.org/10.1007/s10967-016-4913-3