Thermoluminescence of rose quartz from Minas Gerais, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.radphyschem.2023.110960 http://hdl.handle.net/11449/247161 |
Resumo: | This article reports the thermoluminescence (TL) properties of rose quartz from Minas Gerais (Brazil), a translucent pink variety of quartz. Firstly, the sample shows a pure α-quartz phase, based on X-ray diffraction results. Also, the mineral shows a wide optical absorption band at about 500 nm, typical of rose quartz. In addition, X-ray fluorescence showed a high percentage of purity (99.1% of the SiO2), and the inductively coupled plasma optical emission spectrometry (ICP OES) recorded the presence of elements such as Al, Ca, Fe and Ti. The TL measurements were carried out using a commercial Risø TL/OSL reader, model DA-20, equipped with a built in 90Sr/90Y beta source, used to irradiate the sample to different radiation doses (0.01 – 1Gy). The glow curve, measured at a heating rate of 1 K/s, consists of a prominent peak at 355 K followed by other low intensity peaks at higher temperatures. Measurements of the main peak are reproducibility with a coefficient of variation (C.V.) of ∼1.3% and a repeatability of ∼1.8%. Kinetic analysis of the main peak was carried out using experimental methods comprising Tm-Tstop technique, the initial rise method, peak shape estimation and various computational methods (TGCD, TLanal, TLDecoxcel and GlowFit). The peak obeys first order kinetics, with activation energy of 0.86 eV, and a frequency factor of the order of 1011 s−1. Finally, in the dose range studied, the peak shows a sublinear dose response after which supralinearity sets in. |
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Thermoluminescence of rose quartz from Minas Gerais, BrazilChemical characterizationDosimetryKinetic parametersRose quartzThermoluminescenceThis article reports the thermoluminescence (TL) properties of rose quartz from Minas Gerais (Brazil), a translucent pink variety of quartz. Firstly, the sample shows a pure α-quartz phase, based on X-ray diffraction results. Also, the mineral shows a wide optical absorption band at about 500 nm, typical of rose quartz. In addition, X-ray fluorescence showed a high percentage of purity (99.1% of the SiO2), and the inductively coupled plasma optical emission spectrometry (ICP OES) recorded the presence of elements such as Al, Ca, Fe and Ti. The TL measurements were carried out using a commercial Risø TL/OSL reader, model DA-20, equipped with a built in 90Sr/90Y beta source, used to irradiate the sample to different radiation doses (0.01 – 1Gy). The glow curve, measured at a heating rate of 1 K/s, consists of a prominent peak at 355 K followed by other low intensity peaks at higher temperatures. Measurements of the main peak are reproducibility with a coefficient of variation (C.V.) of ∼1.3% and a repeatability of ∼1.8%. Kinetic analysis of the main peak was carried out using experimental methods comprising Tm-Tstop technique, the initial rise method, peak shape estimation and various computational methods (TGCD, TLanal, TLDecoxcel and GlowFit). The peak obeys first order kinetics, with activation energy of 0.86 eV, and a frequency factor of the order of 1011 s−1. Finally, in the dose range studied, the peak shows a sublinear dose response after which supralinearity sets in.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Department of Physics Federal Institute of São Paulo, SPGraduate Program in Science and Technology of Materials São Paulo State University, SPPolytechnic School Technological Characterization Laboratory University of São Paulo, SPDepartment of Physics Federal University of São Paulo, SPDepartment of Geography Federal Institute of the South of Minas Gerais, MGDepartment of Physics and Electronics Rhodes UniversityInstitute of Physics University of São Paulo, SPGraduate Program in Science and Technology of Materials São Paulo State University, SPFAPESP: 2021/10117-9Federal Institute of São PauloUniversidade Estadual Paulista (UNESP)Universidade de São Paulo (USP)Federal Institute of the South of Minas GeraisRhodes UniversityMartins, R. T.E.K.Ferreira, I. A.Silva, A. O.Nunes, M. C.S. [UNESP]Ulsen, C.Künzel, R.Souza, M. M.Chithambo, M. L.Yoshimura, E. M.Trindade, N. M.2023-07-29T13:08:01Z2023-07-29T13:08:01Z2023-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.radphyschem.2023.110960Radiation Physics and Chemistry, v. 209.1879-08950969-806Xhttp://hdl.handle.net/11449/24716110.1016/j.radphyschem.2023.1109602-s2.0-85152415602Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRadiation Physics and Chemistryinfo:eu-repo/semantics/openAccess2023-07-29T13:08:01Zoai:repositorio.unesp.br:11449/247161Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:42:59.196223Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Thermoluminescence of rose quartz from Minas Gerais, Brazil |
title |
Thermoluminescence of rose quartz from Minas Gerais, Brazil |
spellingShingle |
Thermoluminescence of rose quartz from Minas Gerais, Brazil Martins, R. T.E.K. Chemical characterization Dosimetry Kinetic parameters Rose quartz Thermoluminescence |
title_short |
Thermoluminescence of rose quartz from Minas Gerais, Brazil |
title_full |
Thermoluminescence of rose quartz from Minas Gerais, Brazil |
title_fullStr |
Thermoluminescence of rose quartz from Minas Gerais, Brazil |
title_full_unstemmed |
Thermoluminescence of rose quartz from Minas Gerais, Brazil |
title_sort |
Thermoluminescence of rose quartz from Minas Gerais, Brazil |
author |
Martins, R. T.E.K. |
author_facet |
Martins, R. T.E.K. Ferreira, I. A. Silva, A. O. Nunes, M. C.S. [UNESP] Ulsen, C. Künzel, R. Souza, M. M. Chithambo, M. L. Yoshimura, E. M. Trindade, N. M. |
author_role |
author |
author2 |
Ferreira, I. A. Silva, A. O. Nunes, M. C.S. [UNESP] Ulsen, C. Künzel, R. Souza, M. M. Chithambo, M. L. Yoshimura, E. M. Trindade, N. M. |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Federal Institute of São Paulo Universidade Estadual Paulista (UNESP) Universidade de São Paulo (USP) Federal Institute of the South of Minas Gerais Rhodes University |
dc.contributor.author.fl_str_mv |
Martins, R. T.E.K. Ferreira, I. A. Silva, A. O. Nunes, M. C.S. [UNESP] Ulsen, C. Künzel, R. Souza, M. M. Chithambo, M. L. Yoshimura, E. M. Trindade, N. M. |
dc.subject.por.fl_str_mv |
Chemical characterization Dosimetry Kinetic parameters Rose quartz Thermoluminescence |
topic |
Chemical characterization Dosimetry Kinetic parameters Rose quartz Thermoluminescence |
description |
This article reports the thermoluminescence (TL) properties of rose quartz from Minas Gerais (Brazil), a translucent pink variety of quartz. Firstly, the sample shows a pure α-quartz phase, based on X-ray diffraction results. Also, the mineral shows a wide optical absorption band at about 500 nm, typical of rose quartz. In addition, X-ray fluorescence showed a high percentage of purity (99.1% of the SiO2), and the inductively coupled plasma optical emission spectrometry (ICP OES) recorded the presence of elements such as Al, Ca, Fe and Ti. The TL measurements were carried out using a commercial Risø TL/OSL reader, model DA-20, equipped with a built in 90Sr/90Y beta source, used to irradiate the sample to different radiation doses (0.01 – 1Gy). The glow curve, measured at a heating rate of 1 K/s, consists of a prominent peak at 355 K followed by other low intensity peaks at higher temperatures. Measurements of the main peak are reproducibility with a coefficient of variation (C.V.) of ∼1.3% and a repeatability of ∼1.8%. Kinetic analysis of the main peak was carried out using experimental methods comprising Tm-Tstop technique, the initial rise method, peak shape estimation and various computational methods (TGCD, TLanal, TLDecoxcel and GlowFit). The peak obeys first order kinetics, with activation energy of 0.86 eV, and a frequency factor of the order of 1011 s−1. Finally, in the dose range studied, the peak shows a sublinear dose response after which supralinearity sets in. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T13:08:01Z 2023-07-29T13:08:01Z 2023-08-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.radphyschem.2023.110960 Radiation Physics and Chemistry, v. 209. 1879-0895 0969-806X http://hdl.handle.net/11449/247161 10.1016/j.radphyschem.2023.110960 2-s2.0-85152415602 |
url |
http://dx.doi.org/10.1016/j.radphyschem.2023.110960 http://hdl.handle.net/11449/247161 |
identifier_str_mv |
Radiation Physics and Chemistry, v. 209. 1879-0895 0969-806X 10.1016/j.radphyschem.2023.110960 2-s2.0-85152415602 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Radiation Physics and Chemistry |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808129454021541888 |