TL and OSL study of Li2B4O7:Cu,Ag synthesized by combustion and solid-state reactions

Lucas Mateus Ferreira de Amorim; Viviane Khoury Asfora; Raquel Aline Pessoa; Vinicius Saito Monteiro de Barros; Pedro Luiz Guzzo; Helen Jamil Khoury

doi:10.15392/bjrs.v10i2A.2036

Authors

Lucas Mateus Ferreira de Amorim
Viviane Khoury Asfora Universidade Federal de Pernambuco (UFPE); Departamento de Energia Nuclear (DEN); Laboratório de Metrologia das Radiações Ionizantes (LMRI) /Laboratório de Proteção Radiológica (LPR)
Raquel Aline Pessoa
Vinicius Saito Monteiro de Barros
Pedro Luiz Guzzo
Helen Jamil Khoury

DOI:

https://doi.org/10.15392/bjrs.v10i2A.2036

Keywords:

lithium tetraborate, optically stimulated luminescence, thermoluminescence

Abstract

The aim of this work was to investigate the Thermoluminescence (TL) and the Optically Stimulated Luminescence (OSL) responses of Li₂B4O₇: Cu, Ag synthesized using two method: a) solid-state and b) liquid combustion methods. In both procedures 0.4% mol of CuN₂O₆.3H₂O and 0.1%mol of AgNO₃ were used as dopants. The techniques of X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used for structural and morphological characterization. The results showed that the samples synthesized using the combustion method are mostly formed by Li₂B₄O₇:Cu,Ag, while those produced by the solid-state method showed the presence of LiBO₂. This fact affects the luminescence response of the samples, Those produced by combustion have higher TL and OSL sensitivities. The IRSL response was not observed for both sample’s batch. Future studies will be carried out to evaluate the use of Li₂B₄O₇:Cu,Ag synthesized by solid-state for high dose dosimetry.

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