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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

LiAlO2 with nanocrystals of Al2Tb4O9 / Tb(AlO3) synthesized by sol-gel technique for TL and OSL applications

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Autor(es):
Ventieri, Alexandre [1, 2] ; Mittani, Juan C. R. [3] ; Rocca, Rene R. [3] ; Goncalves, Katia A. [1] ; Tatumi, Sonia H. [3]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Escola Politecn, Dept Engn Sistemas Eletron, 380 Luciano Gualberto Ave, BR-05508900 Sao Paulo, SP - Brazil
[2] Inst Fed Educ Ciencia & Tecnol Sao Paulo, Dept Eletr, 625 Pedro Vicente, BR-01109010 Sao Paulo, SP - Brazil
[3] Univ Fed Sao Paulo, Dept Ciencia Mar, 89 Alm Saldanha Gama Ave, BR-05508900 Santos, SP - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Radiation Measurements; v. 106, n. SI, p. 89-93, NOV 2017.
Citações Web of Science: 1
Resumo

Using a sol-gel route, powder samples of gamma-LiAklO(2) and doped with Tb were synthesized successfully. Xray diffraction (XRD) results demonstrated that doped samples were composed of two phases Al2Tb4O9 and Tb(AlO3), which form long nanostructure crystals reveled by SEM images on the surface of gamma-LiAlO2 grains. The undoped and doped samples supplied intense and complex TL glow curves, which were studied by Tm-Tstop method. A minimum detection dose (MDD) of 2.2 mGy was obtained with the 210 degrees C TL peak of gamma-LiAlO2:Tb. OSL results of gamma-LiAlO2:Tb showed strong thermal and optical charges transfer behavior. The OSL response of gamma-LiAlO2:Tb could be sensitized by high dose irradiation and supplied a MDD of 5 mGy. (C) 2017 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 16/07325-0 - SSD 18 - 18th International Conference on solid state dosimetry
Beneficiário:Sonia Hatsue Tatumi
Linha de fomento: Auxílio à Pesquisa - Reunião - Exterior