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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.)

Luminescence properties of SiO2:Tb nanocrystals obtained via sol-gel route and its applicability to environmental ionizing radiation dosimetry

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Tudela, D. R. G. [1] ; Tatumi, S. H. [1, 2] ; Courrol, L. C. [3] ; Rocca, R. R. [2] ; Mittani, J. C. R. [2]
Total Authors: 5
[1] Univ Sao Paulo, Av Prof Luciano Gualberto 158, BR-05508010 Sao Paulo, SP - Brazil
[2] Univ Fed Sao Paulo, Marine Sci Dept, R Dr Carvalho de Mendonca 144, BR-11070100 Santos, SP - Brazil
[3] Univ Fed Sao Paulo, Phys Dept, R Dr Riedel 275, BR-09972270 Diadema, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Journal of Luminescence; v. 207, p. 123-128, MAR 2019.
Web of Science Citations: 0

SiO2 was synthesized by sol-gel method and its luminescence investigated by emission spectroscopy and thermoluminescence (TL) techniques. A study on the influence of Tb on SiO2 was performed and a high increase of about 3000 times in TL intensity was observed. In addition, the presence of 4 bands in the UV (309, 336, 344 and 370 nm) and 6 bands (468, 521, 544, 585, 612 and 631 nm) in the visible region were detected. To verify its viability as an environmental radiation dosimeter, optically stimulated luminescence (OSL) measurements were made by irradiating the crystal with beta radiation, and linear growth was obtained in the region of low radiation doses, with minimum detectable dose of 0.4 mGy. (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