Exploring luminescence properties and dosimetric characteristics of CaSO4 :RE,Mn (RE: Dy, Ce, Yb, Eu, Tb) phosphors synthesized by slow evaporation route
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2024
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SIMPOSIO REPROLAM, 1st
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Ionizing radiation dosimetry devices are crucial for ensuring compliance with safe exposure limits in agriculture, industry,
and medicine, particularly in monitoring and quantifying absorbed doses among occupationally exposed individuals (OEIs).
Luminescent dosimeters, utilizing thermally stimulated luminescence (TL) and optically stimulated luminescence (OSL),
play a pivotal role in this field. Diverse research are focused on characterizing and developing new materials for luminescent
dosimetry, as well as exploring practical applications for existing materials. This study aimed to investigate and compare the
luminescence properties of CaSO4 :Dy,Mn, CaSO4 :Ce,Mn, CaSO4 :Yb,Mn, CaSO4 :Eu,Li and CaSO4 :Tb,Mn composites
synthesized via the slow evaporation route. Structural phase identification was conducted using X-ray diffraction, and
energy-dispersive spectroscopy (EDS) spectra confirmed the presence of dopant ions in the crystalline matrices. Dosimetric
characterization utilized pellets produced by incorporating Teflon into the phosphors. In-depth investigations included
analysis of TL glow curves with Schott BG-39 and Hoya U-340 bandpass filters to regulate wavelengths, along with
Continuous Wave Optically Stimulated Luminescence (CW-OSL) curves. The CaSO4 :Ce,Mn and CaSO4 :Eu,Mn
composites exhibited intense TL/OSL signals compared to other samples and commercially available dosimeters. All samples
demonstrated suitable OSL curves, showing exponential decay trends as charge traps were emptied, enhancing the
applicability of more sensitive TL/OSL detectors. Overall, the evaluated dosimetric characteristics indicate significant
potential for these new developed composites as TL/OSL detectors.
Como referenciar
SILVA, ANDERSON M.B.; JUNOT, DANILO O.; ANTONIO, PATRICIA L.; SOUZA, DIVANIZIA N.; CALDAS, LINDA V.E. Exploring luminescence properties and dosimetric characteristics of CaSO4 :RE,Mn (RE: Dy, Ce, Yb, Eu, Tb) phosphors synthesized by slow evaporation route. In: SIMPOSIO REPROLAM, 1st, November 5-8, 2024, Recife, PE. Abstract... Disponível em: https://repositorio.ipen.br/handle/123456789/48881. Acesso em: 30 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.