Energy transfer in organic systems XIII
نویسنده
چکیده
Energy transfer has been investigated in polyvinyltoluene (PVT) scintillators containing pyrene, p-terphenyl and naphthalene by measurement of scintillation pulse shapes and yields. It is concluded that there is an initial rapid diffusion of the excitation energy with solute molecules, residual monomer and PVT excimer sites acting as competing traps. At later times energy can transfer from residual monomer and PVT excimer traps to the solute either radiatively or via long-range resonance, and the efficiencies of these processes are governed by the absorption characteristics of the solute.
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