有机液体闪烁体中扩散、迁移和远程相互作用在能量传递和猝灭过程中的作用

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-11-01 DOI:10.1016/0883-2889(92)90007-2

B.G. Math, G.C. Chikkur , G.H. Malimath

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引用次数: 1

摘要

在以2,5-二[5-叔丁基-2-苯并恶唑]-噻吩(BBOT)为溶质，甲苯为溶剂，溴苯为外溶剂猝灭剂的液体闪烁体体系中，测定了三种介质中能量传递速率参数K3和猝灭速率参数K7b;纯甲苯(TN)，按体积分数1:9与甲苯-环己烷(TC)和甲苯-液态石蜡(TP)的稀释混合物，温度范围20°-70°C(粘度范围0.35-39.0 cp)。讨论了扩散、迁移和福斯特型远距离偶极-偶极相互作用在这三种体系中的作用。

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The role of diffusion, migration and long-range interaction in energy transfer and quenching processes in an organic liquid scintillator

The energy transfer rate parameter K₃ and the quenching rate parameter K_7b are determined in a liquid scintillator system consisting of 2,5-di-[5-tertbutyl-2-benzoxazolyl)-thiophene (BBOT) as solute, toluene as solvent and bromobenzene as external solvent quencher in three different media; neat toluene (TN), dilute mixture 1:9 by volume fraction to toluene to cyclohexane (TC) and toluene to liquid paraffin (TP), in the temperature range 20°–70°C (viscosity range 0.35–39.0 cp). The results are discussed in terms of the role of diffusion, migration and long-range dipole-dipole interaction of Forster type in these three systems.

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International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes

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