TL and OSL characterization of CaSO4:Tb, CaSO4:Mn AND CaSO4:Mn,Tb phosphors

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dc.contributor.authorSILVA, ANDERSON M.B.
dc.contributor.authorRODRIGUES, DANIEL S.
dc.contributor.authorGUEDES, BEATRIZ D.
dc.contributor.authorSILVEIRA, IURY S.
dc.contributor.authorANTONIO, PATRÍCIA L.
dc.contributor.authorJUNOT, DANILO O.
dc.contributor.authorCALDAS, LINDA V.E.
dc.contributor.authorSOUZA, DIVANIZIA N.
dc.coverageInternacional
dc.creator.eventoINTERNATIONAL CONFERENCE ON SOLID STATE DOSIMETRY, 20th
dc.date.accessioned2024-03-22T17:44:05Z
dc.date.available2024-03-22T17:44:05Z
dc.date.eventoSeptember 17-22, 2023
dc.description.abstractThe objective of this work was to investigate the luminescence properties of CaSO4:Tb, CaSO4:Mn e CaSO4:Mn,Tb synthesized by slow evaporation route. The crystalline structure, morphology, thermal and optical properties of the phosphors were characterized by X-ray diffraction analysis (XRD), Scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and radioluminescence (RL). Moreover, using thermoluminescence (TL) and optically stimulated luminescence (OSL) techniques, the dosimetric properties of the phosphors were comprehensively investigated, such as emission spectra, glow curve reproducibility, dose-response linearity, fading of the luminescent signal, OSL decay curves, correlation between TL and OSL emissions and minimum detectable dose (MDD). For dosimetric analyses the samples were irradiated with doses of between 169 mGy and 10 Gy. TL emission spectra confirmed the presence of Tb3+ and Mn2+ ions in crystalline matrices. The samples showed a typical exponential OSL decay curve with the predominance of a fast decay component, indicating that the traps have a high photoionization cross-section for blue LEDs, and a MDD on the order of mGy. The luminescent signals showed to be linear and reproducible in the studied dose range. The trapping centers located between 0.63 eV and 1.07 eV were revealed. The high TL sensitivity of phosphors was proven when comparing with commercially available dosimeters. It was also observed that co-doping with Mn and Tb contributed to a reduction in fading compared to CaSO4:Mn and CaSO4:Tb.
dc.event.siglaSSD20
dc.identifier.citationSILVA, ANDERSON M.B.; RODRIGUES, DANIEL S.; GUEDES, BEATRIZ D.; SILVEIRA, IURY S.; ANTONIO, PATRÍCIA L.; JUNOT, DANILO O.; CALDAS, LINDA V.E.; SOUZA, DIVANIZIA N. TL and OSL characterization of CaSO4:Tb, CaSO4:Mn AND CaSO4:Mn,Tb phosphors. In: INTERNATIONAL CONFERENCE ON SOLID STATE DOSIMETRY, 20th, September 17-22, 2023, Viareggio, Italy. <b>Abstract...</b> Disponível em: https://repositorio.ipen.br/handle/123456789/47980.
dc.identifier.orcidhttps://orcid.org/0000-0002-7362-2455
dc.identifier.urihttps://repositorio.ipen.br/handle/123456789/47980
dc.local.eventoViareggio, Italy
dc.rightsopenAccess
dc.titleTL and OSL characterization of CaSO4:Tb, CaSO4:Mn AND CaSO4:Mn,Tb phosphors
dc.typeResumo de eventos científicos
dspace.entity.typePublication
ipen.autorIURY SANTOS SILVEIRA
ipen.autorPATRICIA DE LARA ANTONIO
ipen.autorLINDA V. E. CALDAS
ipen.codigoautor15320
ipen.codigoautor6585
ipen.codigoautor1495
ipen.contributor.ipenauthorIURY SANTOS SILVEIRA
ipen.contributor.ipenauthorPATRICIA DE LARA ANTONIO
ipen.contributor.ipenauthorLINDA V. E. CALDAS
ipen.event.datapadronizada2023
ipen.identifier.ipendoc30320
ipen.notas.internasAbstract
ipen.type.genreResumo
relation.isAuthorOfPublication876c9543-2c25-40ae-9739-84b9c481eb72
relation.isAuthorOfPublication5ea4ca8b-8415-4439-81d2-6fe0d6debd42
relation.isAuthorOfPublication7f46d4f4-dfd6-4485-a767-10df5b4f4f13
relation.isAuthorOfPublication.latestForDiscovery876c9543-2c25-40ae-9739-84b9c481eb72
sigepi.autor.atividadeIURY SANTOS SILVEIRA:15320:330:N
sigepi.autor.atividadePATRICIA DE LARA ANTONIO:6585:330:N
sigepi.autor.atividadeLINDA V. E. CALDAS:1495:330:N
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