Optically stimulated luminescence of different borate glass compositions
Carregando...
Data
Data de publicação:
2019
Autores IPEN
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
ENCONTRO DE OUTONO DA SOCIEDADE BRASILEIRA DE FÍSICA, 42.
Resumo
Radiation detection applications are pointed out as one of the emerging research areas in glass science. Borate
glass presents desirable characteristics for dosimetric applications. The main goal of this work was to analyze the
optically stimulated luminescence (OSL) signal for different lithium borate glasses containing magnesia (LMB),
quicklime (LCB) or potassium carbonate (LKB). Five different glass formulations were produced for each batch.
All formulations were produced by using a melt-quenching method and analyzed in terms of both dose-response
and OSL shape decay after submitted to beta irradiation. Pre-heating treatments were also used in the OSL
analysis of the samples. The X-ray diffractometry (XRD) and differential thermal analysis (DTA) confirmed
the glassy state of the produced samples. In our research, we observed that glass modified with potassium,
LKB, is more sensitive to radiation compared with samples produced with magnesium and calcium. Regarding
the study done with the LKB formulations, differences in the sensitivity ranking were observed as we either
analyzed the OSL signal based on the integrated signal or the emission in the very first 0.16 s. A comparison
of this difference was extended to all formulations in the LKB group, which showed that the parameter used
to plot the dose-response curve has to be considered in the process of analyzing glassy materials, as it can
influence in possible applications. Pre-heating studies also showed tendencies for the studied compositions that
were already discussed in the specialized literature for phosphate glass.
Como referenciar
VALENCA, J.V.B.; ANTONIO, P.L.; CALDAS, L.V.E.; SILVA, A.C.A.; DANTAS, N.O.; D'ERRICO, F.; SILVEIRA, I.S.; SOUZA, S.O. Optically stimulated luminescence of different borate glass compositions. In: ENCONTRO DE OUTONO DA SOCIEDADE BRASILEIRA DE FÍSICA, 42., 26-31 de maio, 2019, Aracaju, SE. Resumo... São Paulo, SP: Sociedade Brasileira de Física, 2019. Disponível em: http://repositorio.ipen.br/handle/123456789/32179. Acesso em: 17 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.