Thermoluminescence features of MgB4O7:Tb phosphor

Thermoluminescence features of MgB4O7:Tb phosphor

Author Kawashima, Yasmin Sayuri Google Scholar
Gugliotti, Caroline Ferreira Google Scholar
Yee, Márcio Google Scholar
Tatumi, Sonia Hatsue Autor UNIFESP Google Scholar
Mittani, Juan Carlos Ramirez Google Scholar
Institution Fac Tecnol São Paulo FATEC SP
Universidade Federal de São Paulo (UNIFESP)
Abstract In the present work, polycrystalline samples of MgB4O7 doped with terbium at different concentrations were synthesized using the solvent evaporation method. the sample doped with 1 mol% of Tb presented the highest luminescence intensity. the glow curve of the samples showed an intense and well defined TL peak having the maximum on 220 degrees C and a small shoulder peak at similar to 330 degrees C. TL spectra and fluorescence of 1 mol% doped sample presented a strong Tb3+ emission lines at 489, 545, 588 and 622 nm. the TL dose response was measured over the gamma dose range between 1 and 10 Gy. the relationship between peak intensity and dose was linear and the minimum detectable dose obtained by interpolation taking into account three times the standard deviation of the zero dose reading was 50 mu Gy. (C) 2013 Elsevier B.V. All rights reserved.
Keywords MgB4O7:Tb
Thermoluminescence
Dosimetry
TL spectrum
Fluorescence
Language English
Sponsor Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Date 2014-02-01
Published in Radiation Physics and Chemistry. Oxford: Pergamon-Elsevier B.V., v. 95, p. 91-93, 2014.
ISSN 0969-806X (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 91-93
Origin https://dx.doi.org/10.1016/j.radphyschem.2012.12.033
Access rights Closed access
Type Article
Web of Science ID WOS:000329271400020
URI https://repositorio.unifesp.br/handle/11600/37387

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