Effects of manganese and terbium on the dosimetric properties of CaSO4

dc.creatorSILVA, ANDERSON M.B.
dc.creatorSOUZA, LUIZA F.
dc.creatorANTONIO, PATRICIA L.
dc.creatorJUNOT, DANILO O.
dc.creatorCALDAS, LINDA V.E.
dc.creatorSOUZA, DIVANIZIA N.
dc.date2022
dc.date2022-08-12T15:00:05Z
dc.date2022-08-12T15:00:05Z
dc.date.accessioned2023-09-28T14:22:54Z
dc.date.available2023-09-28T14:22:54Z
dc.identifier0969-806X
dc.identifierhttp://repositorio.ipen.br/handle/123456789/33207
dc.identifier198
dc.identifier10.1016/j.radphyschem.2022.110207
dc.identifier0000-0002-7362-2455
dc.identifier65.8
dc.identifier74
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9003426
dc.descriptionIn this study, a new CaSO4 crystal doped with manganese and terbium is described and its potential for dosimetric applications is evaluated. Crystals were synthesized using the slow evaporation route, and were prepared in pellet form with the addition of Teflon. CaSO4 was doped with manganese and terbium at a concentration of 0.1 mol% in each case. The crystalline structure and optical properties of the crystals were evaluated by X-ray diffraction, Fourier transform infrared spectroscopy and photoluminescence. The suitability of these crystals for thermoluminescent (TL) and optically stimulated luminescent (OSL) dosimetry was also investigated. The material showed adequate OSL and TL characteristics, such as a TL glow curve with two peaks at approximately 205 ??C and 325 ??C, an adequate OSL decay curve, good reproducibility, and linearity of the luminescent signals, when irradiated with doses of between 200 mGy and 150 Gy. Two trapping centers located at 0.77 and 1.02 eV were revealed. The heating rate dependence was also evaluated. The lowest detectable dose was investigated by the TL and OSL techniques, and the results were presented in mGy for both methods. 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.descriptionCoordena????o de Aperfei??oamento de Pessoal de N??vel Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Cient??fico e Tecnol??gico (CNPq)
dc.descriptionFunda????o de Amparo ?? Pesquisa do Estado de S??o Paulo (FAPESP)
dc.descriptionCAPES: 88881.157892/2017-01
dc.descriptionCNPq: 427010/2016-0; 308090/2016-0; 151945/2019-5; 301335/2016-8; 160306/2019-1; 466512/2018-5
dc.descriptionFAPESP: 18/05982
dc.format1-9
dc.relationRadiation Physics and Chemistry
dc.rightsopenAccess
dc.subjectcalcium sulfates
dc.subjectmanganese
dc.subjectterbium
dc.subjectoptical properties
dc.subjectcalcium sulfates
dc.titleEffects of manganese and terbium on the dosimetric properties of CaSO4
dc.typeArtigo de peri??dico
dc.coverageI


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