Title
Thermoluminescence of natural and synthetic diopside
Date Issued
01 July 2008
Access level
metadata only access
Resource Type
journal article
Author(s)
CANO MAMANI, NILO FRANCISCO
MOSQUEIRA YAURI, JESSICA
Watanabe S.
Mittani J.C.R.
Blak A.R.
Abstract
Diopside, a natural silicate mineral of formula CaMgSi2O6, has been investigated concerning its thermoluminescence (TL) and electron paramagnetic resonance (EPR) properties. Glow curves and TL vs. γ-dose were obtained irradiating natural samples to additional dose varying from 50 to 10,000 Gy. Except for a 410 °C peak found in the Al-doped artificial diopside, all the other peaks grow linearly with radiation dose, but saturate beyond ∼1 kGy. To investigate high-temperature effect before irradiation, measurements of TL intensity in samples annealed at 500-900 °C and then irradiated to 1 kGy γ-dose were carried out. Also the TL emission spectrum has been obtained. To compare with natural diopside, a synthetic pure polycrystal was produced and further those doped with iron, aluminum and manganese were also produced. © 2007 Elsevier B.V. All rights reserved.
Start page
1185
End page
1190
Volume
128
Issue
7
Language
English
OCDE Knowledge area
Electroquímica
Física de partículas, Campos de la Física
Subjects
Scopus EID
2-s2.0-41749091834
Source
Journal of Luminescence
ISSN of the container
00222313
Sponsor(s)
The authors wish to thank Ms. E. Somessari and Mr. C. Gaia, Instituto de Pesquisas Energeticas e Nucleares (IPEN), Brazil, for kindly carrying out irradiation of the samples. This work is supported by FAPESP, CNPq and CAPES.
Sources of information:
Directorio de Producción Científica
Scopus