Title
Radiation dosimetry using decreasing TL intensity in a few variety of silicate crystals
Date Issued
01 November 2015
Access level
metadata only access
Resource Type
journal article
Author(s)
Universidad Federal de Sao Paulo
Publisher(s)
Elsevier Ltd
Abstract
This study shows that there are some ionic crystals which after irradiation with high gamma dose D<inf>m</inf> and subsequent irradiation with low doses ranging up to 500Gy present a decreasing TL intensity as dose increases. This interesting feature can be used as a calibration curve in radiation dosimetry. Such behavior can be found in green quartz, three varieties of beryl and pink tourmaline. In all these silicate crystals it can be shown that irradiation with increasing γ-dose there is a dose D<inf>m</inf> for which the TL intensity is maximum. Of course, D<inf>m</inf> varies depending on the crystal and irradiated crystal with the dose D<inf>m</inf> is stable. If one of these crystals is taken and irradiated with doses from low values up to 400-500Gy, a curve of decreasing TL intensity is obtained; such a curve can be used as a calibration curve.
Start page
119
End page
122
Volume
105
Language
English
OCDE Knowledge area
Mineralogía
Electroquímica
Subjects
Scopus EID
2-s2.0-84939530974
Source
Applied Radiation and Isotopes
ISSN of the container
09698043
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 the irradiation of the samples. This work had financial support from Fundação de Amparo à Pesquisa do Estado de Sao Paulo - FAPESP and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES. One of us T.K. Gundu Rao is holder Visitor Professor Fellowship from CAPES (Process number BEX-9612130).
Sources of information:
Directorio de Producción Científica
Scopus