Comparative analysis of dosimetric characteristics in CaSO4:Mn,Tb phosphors synthesized through various production routes
Carregando...
Data
Data de publicação
2024
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
SIMPOSIO REPROLAM, 1st
Exportar
Resumo
The luminescence of crystalline compounds can be used to monitor various physical phenomena, including doses of ionizing
radiation. Optically stimulated luminescence (OSL) and thermoluminescence (TL) have been successfully employed in
dosimetry. Considering the importance of various research efforts focused on characterisation and development of new
materials for luminescent dosimetry, as well as exploring practical applications for existing materials, this study is part of an
ongoing experimental series initiated by our research group, expanding upon the foundational work of Silva et al. (2022). We
synthesized a series of new CaSO₄:Mn,Tb phosphors using four distinct routes: solid-state diffusion, precipitation, sol-gel
methods, and the slow evaporation route. Analysis of pellets produced by incorporating Teflon into the phosphors, showed
that the synthesis method significantly influences the luminescent properties of the phosphors. Specifically, the slow
evaporation route, followed by solid-state synthesis, yielded the highest intensity of TL glow curves, which were
characterized using Schott BG-39 and Hoya U-340 bandpass filters to control wavelengths. Different emission curve
behaviors for TL were observed. In the OSL analyses, obtained with continuous intensity optical stimulation and a 40-second
integration time, all samples exhibited an exponential decrease in OSL signal as the charge traps were emptied. The
CaSO₄:Mn,Tb phosphor produced via the sol-gel route followed by slow evaporation showed the highest OSL intensity,
followed by those produced via solid-state synthesis and precipitation. However, the high variation coefficient (CV%) in the
TL/OSL responses of the phosphor produced by the sol-gel route, compared to the other syntheses (CV < 10%), makes it
unsuitable for practical applications, indicating a need for optimization of production parameters.
Como referenciar
SILVA, ANDERSON M.B.; JUNOT, DANILO O.; ANTONIO, PATRICIA L.; SOUZA, DIVANIZIA N.; CALDAS, LINDA V.E. Comparative analysis of dosimetric characteristics in CaSO4:Mn,Tb phosphors synthesized through various production routes. In: SIMPOSIO REPROLAM, 1st, November 5-8, 2024, Recife, PE. Abstract... Disponível em: https://repositorio.ipen.br/handle/123456789/48878. Acesso em: 31 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.