Influence of bismuth loading in polystyrene-based plastic scintillators for low energy gamma spectroscopy
- Bertrand, Guillaume H. V.
- Sguerra, Fabien
- Carrel, Frédérick
- Coulon, Romain
- Normand, Stéphane
- Barat, Eric
- Dautremer, Thomas
- Montagu, Thierry
- Hamel, Matthieu
DOIAbstract
International audienceThis article presents the synthesis and the blend of bismuth complexes in polystyrene based plastic scintillators. A specific design has enabled the fabrication of a scintillator loaded with up to 17 wt% of bismuth. Tri-carboxylate and triaryl bismuth compounds were used to explore and understand the influence of bismuth loading on the two main criteria of plastic scintillation: light yield and detection efficiency of gamma-rays. For gamma radiation with an energy <200 keV, bismuth loaded scintillators demonstrate the ability to produce a photoelectric peak (total absorption peak) in pulse height spectra. The increase of interactions due to bismuth doping was quantified and fitted with standard models. Finally the perf...
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