Adadurov A F, Zhmurin P N, Lebedev V N, Kovalenko V N
Institute for Scintillating Materials, NAN of Ukraine, Kharkov, Ukraine.
Appl Radiat Isot. 2011 Oct;69(10):1475-8. doi: 10.1016/j.apradiso.2011.05.022. Epub 2011 May 24.
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.
研究了含β-二酮铕配合物的聚苯乙烯基塑料闪烁体的发光和闪烁特性。含有两个苯基的二苯甲酰甲烷铕配合物的闪烁体表现出最大的闪烁效率。结果表明，如果β-二酮衍生物不含苯基作为取代基，塑料闪烁体的效率会显著降低。这一事实可以通过从基质到铕配合物的能量转移激基复合物机制来解释。
