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

✍ Scribed by B.G. Math; G.C. Chikkur; G.H. Malimath

• Publisher: Elsevier Science
• Year: 1992
• Weight: 340 KB
• Volume: 43
• Category: Article
• ISSN: 0883-2889
• DOI: 10.1016/0883-2889(92)90007-2

✦ Synopsis

The energy transfer rate parameter K 3 and the quenching rate parameter KTb 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~lipole interaction of Forster type in these three systems.