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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/67001
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dc.contributor.authorFerraz, G. M.-
dc.contributor.authorWatanabe, S.-
dc.contributor.authorSouza, S. O.-
dc.contributor.authorScalvi, Rosa Maria Fernandes-
dc.date.accessioned2014-05-27T11:20:31Z-
dc.date.accessioned2016-10-25T18:18:01Z-
dc.date.available2014-05-27T11:20:31Z-
dc.date.available2016-10-25T18:18:01Z-
dc.date.issued2002-10-19-
dc.identifierhttp://rpd.oxfordjournals.org/content/100/1-4/471.abstract-
dc.identifier.citationRadiation Protection Dosimetry, v. 100, n. 1-4, p. 471-474, 2002.-
dc.identifier.issn0144-8420-
dc.identifier.urihttp://hdl.handle.net/11449/67001-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/67001-
dc.description.abstractThe TL, optical absorption (OA) and EPR properties of natural Brazilian alexandrite and chrysoberyl have been investigated. The TL measurements for natural alexandrite show five peaks between 100 and 450°C, with their emission spectrum having 370 and/or 570 nm components. The intensity of the 320°C TL peak was found to be enhanced with pre-annealing treatment, more prominently above 600°C. The OA and EPR measurements showed that this kind of heat treatment induces the Fe2→ Fe3+ conversion in the natural sample. Chrysoberyl samples exhibited the TL peaks at the same temperatures as alexandrite samples, but the glow curves were more than 200 times less intense than alexandrite ones.en
dc.format.extent471-474-
dc.language.isoeng-
dc.sourceScopus-
dc.subjectalexandrite-
dc.subjectchrysoberyl-
dc.subjectferric ion-
dc.subjectferrous ion-
dc.subjectmineral-
dc.subjectunclassified drug-
dc.subjectcontrolled study-
dc.subjectelectron spin resonance-
dc.subjectheat treatment-
dc.subjectoptics-
dc.subjectradiation absorption-
dc.subjectsample-
dc.subjectspectrum-
dc.subjecttemperature-
dc.subjectthermoluminescence-
dc.subjectBeryllium-
dc.subjectCrystallization-
dc.subjectElectron Spin Resonance Spectroscopy-
dc.subjectHeat-
dc.subjectLuminescent Measurements-
dc.subjectOptics-
dc.subjectThermoluminescent Dosimetry-
dc.subjectX-Rays-
dc.titleTL, EPR and optical absorption studies on natural alexandrite compared to natural chrysoberylen
dc.typeoutro-
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationDepartamento de Física Nuclear Instituto de Física Universidade de Sâo Paulo, C. P., 66318, CEP: 05315-970, São Paulo-
dc.description.affiliationDepartamento de Física Faculdade de Ciências UNESP-Bauru, São Paulo-
dc.description.affiliationUnespDepartamento de Física Faculdade de Ciências UNESP-Bauru, São Paulo-
dc.identifier.wosWOS:000178899600105-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofRadiation Protection Dosimetry-
dc.identifier.scopus2-s2.0-0036392666-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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