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...

Full description

Saved in:
Bibliographic Details
Published inRadiation measurements Vol. 35; no. 2; pp. 155 - 159
Main Authors de Lima, J.F, Navarro, M.S, Valerio, M.E.G
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.04.2002
Elsevier
Subjects
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geochronology
Isotope geochemistry. Geochronology
Mineralogy
Quartz
Sensitization
Silicates
Thermal treatment
Thermoluminescence
TL spectra
TL spectra
Sensitization
Quartz
Thermoluminescence
Thermal treatment
traps
luminescence
cooling
temperature
silicates
quartz
concentration
emission spectra
framework silicates
thermoluminescence
heat treatment
irradiation
Online AccessGet full text

Cover

More Information
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.
ISSN:1350-4487
1879-0925
DOI:10.1016/S1350-4487(01)00283-9