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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Sol-gel synthesis of strontium aluminate phosphor and its TL and OSL properties

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Tatumi, Sonia H. [1] ; Soares, Alvaro de F. [1] ; Tudela, Diego R. G. [2] ; Goncalves, Katia A. [3] ; Rocca, Rene R. [1]
Total Authors: 5
[1] Univ Fed Sao Paulo, Marine Sci Dept, Sao Paulo - Brazil
[2] Univ Sao Paulo, Elect Engn Dept, Sao Paulo - Brazil
[3] Anhembi Morumbi Univ, Civil Engn Dept, Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Radiation Physics and Chemistry; v. 157, p. 15-21, APR 2019.
Web of Science Citations: 1

SrAl2O4 monoclinic and Sr12Al14O33 cubic phase nanocrystals were synthesized using sol-gel route and their morphology verified with X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) to confirm the crystallinity of the samples and the crystallites nanoscale. Luminescence emissions were investigated by Optically Stimulated Luminescence (OSL) and Thermoluminescence (TL) methods in samples thermally treated at 1000 degrees C for 2h and irradiated with beta particles. TL glow curve was complex with 9 individual peaks, which was analyzed by T-m-T-stop method, general order kinetic theory using Computerized Glow Curve Deconvolution (CGCD). A thermal transfer TL phenomenon was observed when the samples were pre-heated in T-m-T-stop procedure. CW-OSL decays measured at 30 degrees C have high intensities even in low doses region and curves were deconvoluted using general order kinetic theory suppling two components for low doses and three components for high dose. (AU)

FAPESP's process: 09/02069-2 - Deployment and development of methodology for single-grain dating by optically stimulated luminescence
Grantee:Sonia Hatsue Tatumi
Support type: Regular Research Grants