title: Plastic scintillators with β-diketone Eu complexes for high ionizing radiation detection.
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.
authors.affiliation: Institute for Scintillating Materials, NAN of Ukraine, Kharkov, Ukraine. adadurov@isma.kharkov.ua
authors.forename: A F
authors.initials: AF
authors.lastname: Adadurov
authors.forename: P N
authors.initials: PN
authors.lastname: Zhmurin
authors.forename: V N
authors.initials: VN
authors.lastname: Lebedev
authors.forename: V N
authors.initials: VN
authors.lastname: Kovalenko