Title
Radiation effect on thermoluminescence and electron paramagnetic resonance (EPR) of pink beryl
Date Issued
01 January 2001
Access level
metadata only access
Resource Type
journal article
Author(s)
University of São Paulo
Abstract
Morganite, a pink beryl with the chemical formula Be3Al2Si6O18, was investigated in terms of its thermally stimulated luminescence (TL) and electron paramagnetic resonance (EPR) properties due to point defects. Atomic hydrogen H°-centers were induced by γ-radiation and shown to be responsible for a 165°C TL peak. The Fe3+-center concentration was found to increase with γ-dose, observed by both TL and EPR measurements, decreasing with thermal treatments beyond 250°C. A mechanism for emission around 315°C is proposed. © 2001 Elsevier Science Ltd. All rights reserved.
Start page
417
End page
419
Volume
61
Issue
June 3
Language
English
OCDE Knowledge area
Protección y nutrición de las plantas
Agricultura
Subjects
Scopus EID
2-s2.0-0034897031
Source
Radiation Physics and Chemistry
ISSN of the container
0969806X
Sponsor(s)
This work was supported by FAPESP and CNPq. We are thankful to Tec. Elizabeth S. Ribeiro and Carlos G. de Silveira, IPEN, for irradiation of the beryl samples.
Sources of information:
Directorio de Producción Científica
Scopus