Radiation effect on thermoluminescence and electron paramagnetic resonance(EPR) of pink beryl

Authors
Ayala-Arenas, JS Andrioli, RL Watanabe, S Matsuoka, M Bhatt, BC
Citation
Js. Ayala-arenas et al., Radiation effect on thermoluminescence and electron paramagnetic resonance(EPR) of pink beryl, RADIAT PH C, 61(3-6), 2001, pp. 417-419
Citations number
9
Categorie Soggetti
Physics
Journal title
RADIATION PHYSICS AND CHEMISTRY
ISSN journal
0969806X → ACNP
Volume
61
Issue
3-6
Year of publication
2001
Pages
417 - 419
Database
ISI
SICI code
0969-806X(200106)61:3-6<417:REOTAE>2.0.ZU;2-6
Abstract
Morganite, a pink beryl with the chemical formula Be3Al2Si6O18, was investi gated in terms of its thermally stimulated luminescence (TL) and electron p aramagnetic resonance (EPR) properties due to point defects. Atomic hydroge n H degrees -centers were induced by gamma -radiation and shown to be respo nsible for a 165 degreesC TL peak. The Fe3+-center concentration was found to increase with T-dose, observed by both TL and EPR measurements, decreasi ng with thermal treatments beyond 250 degreesC. A mechanism for emission ar ound 315 degreesC is proposed. (C) 2001 Elsevier Science Ltd. All rights re served.