Characterization of TL and CW-OSL signals of natural brazilian topaz with different colours

Matheus Fernando dos santos; Leonardo  Bruno Ferreira de Souza; Viviane  Khoury Asfora; Álvaro Barbosa de Carvalho Júnior; Vinicius Saito Monteiro de Barros; Pedro Luiz Guzzo; Helen Jamil Khoury

doi:10.15392/bjrs.v9i1A.1310

Characterization of TL and CW-OSL signals of natural brazilian topaz with different colours

Authors

Matheus Fernando dos santos DEN/UFPE – Department of Nuclear Energy, Federal University of Pernambuco https://orcid.org/0000-0003-0477-249X
Leonardo Bruno Ferreira de Souza
Viviane Khoury Asfora
Álvaro Barbosa de Carvalho Júnior
Vinicius Saito Monteiro de Barros
Pedro Luiz Guzzo
Helen Jamil Khoury

DOI:

https://doi.org/10.15392/bjrs.v9i1A.1310

Keywords:

Brazilian topaz, different colours, thermoluminescence (TL), optically stimulated luminescence (OSL).

Abstract

Topaz [Al₂SiO₄(OH,F)₂] is usually found in nature and can presents different colours. The aim of this paper is to evaluate the thermoluminescence (TL) and the optically stimulated luminescence (OSL) response of five types of topaz collected from three different Brazilian states. The topaz samples studied have a yellow, blue and colourless coloration. The TL results showed that colourless samples from the state of Rio Grande do Norte present a TL glow curve with a main peak at ~260ºC. The others colourless topaz from Teofilo Otoni e Mato Grosso do Sul, besides the peak of ~260ºC, the present another peak at 160 ºC. The highest TL intensity was observed with the colourless topaz from RN. A linear TL dose curve response was also observed with these samples from the gamma radiation of ⁶⁰Co in the range of 0.01 Gy to 3.5 Gy. The blue light stimulation (BSL) showed almost the same intensity response for the three colourless topaz samples. None topaz sample showed response to optical infrared stimulation (IRSL).

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Author Biography

Matheus Fernando dos santos, DEN/UFPE – Department of Nuclear Energy, Federal University of Pernambuco

physics

References

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Published

2021-04-30

Issue

Vol. 9 No. 1A (2021)

Section

The Meeting on Nuclear Applications (ENAN) 2019

License

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How to Cite

Characterization of TL and CW-OSL signals of natural brazilian topaz with different colours. Brazilian Journal of Radiation Sciences, Rio de Janeiro, Brazil, v. 9, n. 1A, 2021. DOI: 10.15392/bjrs.v9i1A.1310. Disponível em: https://bjrs.org.br/revista/index.php/REVISTA/article/view/1310.. Acesso em: 27 nov. 2024.