Luminescent and kinetic properties of the polystyrene composites based on BaF₂ nanoparticles

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• 作者：T.M. Demkiv^a ; ; O.O. Halyatkin^a ; V.V. Vistovskyy^a ; A.V. Gektin^b ; A.S. Voloshinovskii^a
• 关键词：Plastic composite scintillator ; BaF2 nanoparticles ; X-ray excited luminescence
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2016
• 出版时间：21 February 2016
• 年：2016
• 卷：810
• 期：Complete
• 页码：1-5
• 全文大小：718 K

文摘

Luminescence-kinetic properties of polystyrene composites based on BaF₂ nanoparticles were studied. The electron emission from the nanoparticles due to the photoelectric effect is the main luminescence excitation mechanism in the case of polystyrene composites loaded with small BaF₂ nanoparticles (~20 nm). Scintillation pulse of polystyrene composites possesses only fast decay component with the time constant τ~2 ns, and its emission intensity considerably exceeds the one for pure polystyrene scintillator upon the X-ray excitations.