Effects of thermal treatment on the TL emission of natural quartz
In this work we investigated the influence of different thermal treatments on the glow curves and emission spectra of a Brazilian natural crystalline quartz sample. All the thermal treatments were done in air for 1 h at 200–900°C, followed by a fast or a slow cooling down to room temperature. We hav...
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Published in | Radiation measurements Vol. 35; no. 2; pp. 155 - 159 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Oxford
Elsevier Ltd
01.04.2002
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | In this work we investigated the influence of different thermal treatments on the glow curves and emission spectra of a Brazilian natural crystalline quartz sample. All the thermal treatments were done in air for
1
h
at 200–900°C, followed by a fast or a slow cooling down to room temperature. We have shown that sensitization can be achieved without pre-dose and that the main effect is related to the thermal treatment by itself. Samples that were heated to temperatures higher than 200°C and irradiated with the same dose showed a new emission band centered at
370
nm
that is responsible for the enhancement of 110°C TL peak. The role played by the [H
3O
4]
0 hole center is discussed. The effect of the cooling down rate was also investigated and it appears to influence the concentration of TL traps. |
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ISSN: | 1350-4487 1879-0925 |
DOI: | 10.1016/S1350-4487(01)00283-9 |