Thermoluminescence of aliphatic oligoesters irradiated by electron beams—II
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説明
Abstract Thermoluminescence mechanism of glassy aliphatic oligoester undoped and doped with some kinds of electron scavengers is discussed, comparing with the thermoluminescence of polycrystalline oligoester. A remarkable decrease of the thermoluminescence intensity was observed in the glassy undoped matrix in comparison to the polycrystalline one. This is due to the trap depth difference between the glassy and polycrystalline matrices. In the glassy matrix doped with electron scavengers, an intense glow was observed at around 140 K for all matrices. The luminescence center of the doped matrix is the excited state of the electron scavenger and is different from that of the undoped matrix in which it is the ester cation of the oligoester. It is expected that energy transfer from the excited charge transfer complex to the electron scavenger occurs in the reaction of the ester cation with the scavenger anion. The appearance of the fluorescence component in the thermoluminescence spectrum is dependent on the kind of the matrix.
収録刊行物
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- Radiation Physics and Chemistry (1977)
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Radiation Physics and Chemistry (1977) 16 307-313, 1980-01-01
Elsevier BV