Dosimetric and optical properties of CaSO4:Tm and CaSO4:Tm,Ag crystals produced by a slow evaporation route

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dc.contributor.authorJUNOT, DANILO O.pt_BR
dc.contributor.authorSANTOS, ANA G.M.pt_BR
dc.contributor.authorANTONIO, PATRICIA L.pt_BR
dc.contributor.authorREZENDE, MARCOS V.S.pt_BR
dc.contributor.authorSOUZA, DIVANIZIA N.pt_BR
dc.contributor.authorCALDAS, LINDA V.E.pt_BR
dc.coverageInternacionalpt_BR
dc.date.accessioned2019-08-09T13:20:55Z
dc.date.available2019-08-09T13:20:55Z
dc.date.issued2019pt_BR
dc.description.abstractThe motivation of this work was to produce TL dosimeters based on crystals of CaSO4 doped with thulium and silver, by means of a suitable new route. The crystals were produced by an adaptation of the slow evaporation route using calcium carbonate (CaCO3) as precursor, and incorporating the dopants (Tm2O3 and silver nanoparticles) in a solution of sulfuric acid, which is evaporated resulting in CaSO4:Tm or CaSO4:Tm,Ag crystal powders. X-ray diffraction analyses showed that the produced samples exhibit only a single phase corresponding to the crystal structure of anhydrite. Optical characterization was performed to determine the band gap of the materials. Samples did not show a reasonable OSL signal after stimulation with blue LEDs. TL characteristics such as glow curves, linearity and reproducibility of response, minimum detectable dose and fading were evaluated. The CaSO4:Tm samples showed TL emission glow curves with peaks in temperatures proper for dosimetry. The CaSO4:Tm,Ag samples presented a very intense peak displaced to high temperatures that could only be observed by applying heating rates below 4 °C/s. Samples doped with thulium oxide and silver nanoparticles showed the highest TL intensity and lowest fading.pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipIDCNPq: 150678/2017-7; 301335/2016-8pt_BR
dc.format.extent58-65pt_BR
dc.identifier.citationJUNOT, DANILO O.; SANTOS, ANA G.M.; ANTONIO, PATRICIA L.; REZENDE, MARCOS V.S.; SOUZA, DIVANIZIA N.; CALDAS, LINDA V.E. Dosimetric and optical properties of CaSO4:Tm and CaSO4:Tm,Ag crystals produced by a slow evaporation route. <b>Journal of Luminescence</b>, v. 210, p. 58-65, 2019. DOI: <a href="https://dx.doi.org/10.1016/j.jlumin.2019.02.005">10.1016/j.jlumin.2019.02.005</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/30062.
dc.identifier.doi10.1016/j.jlumin.2019.02.005pt_BR
dc.identifier.issn0022-2313pt_BR
dc.identifier.orcid0000-0002-7362-2455pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7362-2455
dc.identifier.percentilfi78.866pt_BR
dc.identifier.percentilfiCiteScore78.60
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/30062
dc.identifier.vol210pt_BR
dc.relation.ispartofJournal of Luminescencept_BR
dc.rightsopenAccesspt_BR
dc.subjectdosimetry
dc.subjectthermoluminescence
dc.subjectcrystals
dc.subjectcalcium sulfates
dc.subjectthermoluminescent dosimetry
dc.subjectthulium oxides
dc.subjectsilver
dc.subjectcalcium carbonates
dc.titleDosimetric and optical properties of CaSO4:Tm and CaSO4:Tm,Ag crystals produced by a slow evaporation routept_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorLINDA V. E. CALDAS
ipen.autorPATRICIA DE LARA ANTONIO
ipen.autorDANILO OLIVEIRA JUNOT
ipen.codigoautor1495
ipen.codigoautor6585
ipen.codigoautor9400
ipen.contributor.ipenauthorLINDA V. E. CALDAS
ipen.contributor.ipenauthorPATRICIA DE LARA ANTONIO
ipen.contributor.ipenauthorDANILO OLIVEIRA JUNOT
ipen.date.recebimento19-08
ipen.identifier.fi3.280pt_BR
ipen.identifier.fiCiteScore5.5
ipen.identifier.ipendoc25856pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.range.fi3.000 - 4.499
ipen.range.percentilfi75.00 - 100.00
ipen.type.genreArtigo
relation.isAuthorOfPublication7f46d4f4-dfd6-4485-a767-10df5b4f4f13
relation.isAuthorOfPublication5ea4ca8b-8415-4439-81d2-6fe0d6debd42
relation.isAuthorOfPublication79a720c5-e5ed-4df1-b034-dee1a2d2baeb
relation.isAuthorOfPublication.latestForDiscovery79a720c5-e5ed-4df1-b034-dee1a2d2baeb
sigepi.autor.atividadeCALDAS, LINDA V.E.:1495:330:Npt_BR
sigepi.autor.atividadeANTONIO, PATRICIA L.:6585:330:Npt_BR
sigepi.autor.atividadeJUNOT, DANILO O.:9400:330:Spt_BR
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