Correlation between thermoluminescence and optically stimulated luminescence responses of natural alexandrite
作者： N.M. Trindade , M.R. Cruz , E.M. Yoshimura
DOI: 10.1016/J.APRADISO.2020.109402
关键词: Luminescence 、 Exponential decay 、 Analytical chemistry 、 Trapping 、 Thermoluminescence 、 Optically stimulated luminescence 、 Materials science
摘要: Abstract Luminescent properties of alexandrite crystals (BeAl2O4:Cr3+) are studied. Partial readouts thermoluminescence (TL) and optically stimulated luminescence (OSL) signals were obtained to infer the relations OSL TL trapping centers. Four peaks studied; their intensities decrease at different rates by illumination with blue light. The curve shows two-time components (exponential decay constants 3.15 28.4 s). short time component is preferentially diminished when sample heated temperatures from 363 513 K. About 50% whole intensity remains after a complete 300s readout.
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