Thermoluminescent mechanism in lilac spodumene

Detalhes bibliográficos
Autor(a) principal: Lalic, Susana de Souza
Data de Publicação: 2007
Outros Autores: Watanabe, Shigueo, Lima, Adilmo Francisco de, Lalic, Milan
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFS
Texto Completo: https://ri.ufs.br/handle/riufs/560
Resumo: In the present work the thermoluminescence of a lilac a-spodumene (LiAlSi2O6), a natural mineral from Brazil, was investigated. Toward this aim the gamma irradiation, as well as several heating processes were carried out. The sample presented a glow curve with various thermoluminescence peaks. Emission spectrum showed only one prominent band at 610 nm, which indicates the existence of only one recombination center despite the several thermoluminescence centers exhibited, due to intrinsic defects. Using correlation between thermoluminescence and optical absorption techniques we discuss the effects of gamma radiation and annealing in the lilac spo- dumene, and conclude that an annealing at about 230±C can be applied to natural lilac spodumene gems used in jewelry for increment of its lilac color.
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spelling Lalic, Susana de SouzaWatanabe, ShigueoLima, Adilmo Francisco deLalic, Milan2013-06-05T16:44:17Z2013-06-05T16:44:17Z2007-11LIMA, A. F. et al. Thermoluminescent mechanism in lilac spodumene. Acta Physica Polonica A, v. 112, n. 5, p. 1007-1012, nov. 2007. Disponível em: <http://przyrbwn.icm.edu.pl/APP/PDF/112/a112z544.pdf>. Acesso em: 5 jun. 2013.1898-794xhttps://ri.ufs.br/handle/riufs/560In the present work the thermoluminescence of a lilac a-spodumene (LiAlSi2O6), a natural mineral from Brazil, was investigated. Toward this aim the gamma irradiation, as well as several heating processes were carried out. The sample presented a glow curve with various thermoluminescence peaks. Emission spectrum showed only one prominent band at 610 nm, which indicates the existence of only one recombination center despite the several thermoluminescence centers exhibited, due to intrinsic defects. Using correlation between thermoluminescence and optical absorption techniques we discuss the effects of gamma radiation and annealing in the lilac spo- dumene, and conclude that an annealing at about 230±C can be applied to natural lilac spodumene gems used in jewelry for increment of its lilac color.TermoluminescênciaRadiaçãoEspodumênioThermoluminescent mechanism in lilac spodumeneinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFSinstname:Universidade Federal de Sergipe (UFS)instacron:UFSinfo:eu-repo/semantics/openAccessTHUMBNAILThermoluminescentLilacSpodumene.pdf.jpgThermoluminescentLilacSpodumene.pdf.jpgGenerated Thumbnailimage/jpeg1402https://ri.ufs.br/jspui/bitstream/riufs/560/4/ThermoluminescentLilacSpodumene.pdf.jpg6eac7fab625b7055bb540f1f138aa18aMD54ORIGINALThermoluminescentLilacSpodumene.pdfThermoluminescentLilacSpodumene.pdfapplication/pdf294348https://ri.ufs.br/jspui/bitstream/riufs/560/1/ThermoluminescentLilacSpodumene.pdfef6d1f2447d5ae0488a58e3a1242d503MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://ri.ufs.br/jspui/bitstream/riufs/560/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52TEXTThermoluminescentLilacSpodumene.pdf.txtThermoluminescentLilacSpodumene.pdf.txtExtracted texttext/plain11547https://ri.ufs.br/jspui/bitstream/riufs/560/3/ThermoluminescentLilacSpodumene.pdf.txt68106e7560a1a8e83734a3021c44f9caMD53riufs/5602013-12-20 15:38:00.166oai:ufs.br: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Repositório InstitucionalPUBhttps://ri.ufs.br/oai/requestrepositorio@academico.ufs.bropendoar:2013-12-20T18:38Repositório Institucional da UFS - Universidade Federal de Sergipe (UFS)false
dc.title.pt_BR.fl_str_mv Thermoluminescent mechanism in lilac spodumene
title Thermoluminescent mechanism in lilac spodumene
spellingShingle Thermoluminescent mechanism in lilac spodumene
Lalic, Susana de Souza
Termoluminescência
Radiação
Espodumênio
title_short Thermoluminescent mechanism in lilac spodumene
title_full Thermoluminescent mechanism in lilac spodumene
title_fullStr Thermoluminescent mechanism in lilac spodumene
title_full_unstemmed Thermoluminescent mechanism in lilac spodumene
title_sort Thermoluminescent mechanism in lilac spodumene
author Lalic, Susana de Souza
author_facet Lalic, Susana de Souza
Watanabe, Shigueo
Lima, Adilmo Francisco de
Lalic, Milan
author_role author
author2 Watanabe, Shigueo
Lima, Adilmo Francisco de
Lalic, Milan
author2_role author
author
author
dc.contributor.author.fl_str_mv Lalic, Susana de Souza
Watanabe, Shigueo
Lima, Adilmo Francisco de
Lalic, Milan
dc.subject.por.fl_str_mv Termoluminescência
Radiação
Espodumênio
topic Termoluminescência
Radiação
Espodumênio
description In the present work the thermoluminescence of a lilac a-spodumene (LiAlSi2O6), a natural mineral from Brazil, was investigated. Toward this aim the gamma irradiation, as well as several heating processes were carried out. The sample presented a glow curve with various thermoluminescence peaks. Emission spectrum showed only one prominent band at 610 nm, which indicates the existence of only one recombination center despite the several thermoluminescence centers exhibited, due to intrinsic defects. Using correlation between thermoluminescence and optical absorption techniques we discuss the effects of gamma radiation and annealing in the lilac spo- dumene, and conclude that an annealing at about 230±C can be applied to natural lilac spodumene gems used in jewelry for increment of its lilac color.
publishDate 2007
dc.date.issued.fl_str_mv 2007-11
dc.date.accessioned.fl_str_mv 2013-06-05T16:44:17Z
dc.date.available.fl_str_mv 2013-06-05T16:44:17Z
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.citation.fl_str_mv LIMA, A. F. et al. Thermoluminescent mechanism in lilac spodumene. Acta Physica Polonica A, v. 112, n. 5, p. 1007-1012, nov. 2007. Disponível em: <http://przyrbwn.icm.edu.pl/APP/PDF/112/a112z544.pdf>. Acesso em: 5 jun. 2013.
dc.identifier.uri.fl_str_mv https://ri.ufs.br/handle/riufs/560
dc.identifier.issn.none.fl_str_mv 1898-794x
identifier_str_mv LIMA, A. F. et al. Thermoluminescent mechanism in lilac spodumene. Acta Physica Polonica A, v. 112, n. 5, p. 1007-1012, nov. 2007. Disponível em: <http://przyrbwn.icm.edu.pl/APP/PDF/112/a112z544.pdf>. Acesso em: 5 jun. 2013.
1898-794x
url https://ri.ufs.br/handle/riufs/560
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language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFS
instname:Universidade Federal de Sergipe (UFS)
instacron:UFS
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reponame_str Repositório Institucional da UFS
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