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Plastic scintillators with β-diketone Eu complexes for high ionizing radiation detection
A F Adadurov1, P N Zhmurin, V N Lebedev
1Institute for Scintillating Materials, NAN of Ukraine, Kharkov, Ukraine. adadurov@isma.kharkov.ua
Abstract:
Luminescent and scintillation properties of polystyrene-based plastic scintillators with β-diketone Eu complexes are investigated. A scintillator with dibenzoylmethane Eu complex containing two phenyl groups demonstrates the maximum scintillating efficiency. It is shown that plastic scintillators efficiency is dramatically decreased if β-diketone derivatives contain no phenyl groups as substituents. This fact can be explained by exciplex mechanism of energy transfer from a matrix to Eu complex.
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