Optically stimulated luminescence dosimetry performance of novel MgO–La(OH)3 phosphors. (March 2020)

• Record Type: Journal Article
• Authors: Marcazzó, J.; Orante-Barrón, V.R.; Camargo, L.; Cruz-Vázquez, C.; Bernal, R.
• Is Part Of: Applied radiation and isotopes. Volume 157(2020:Mar.)
• Publication Date: 2020-03
• Subjects: Optically stimulated luminescence -- MgO -- Dosimetry; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2019.109031
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: The aim of this work was to study the optically stimulated luminescence (OSL) properties of novel MgO co-doped with different lanthanides and lithium ions as well as to evaluate the feasibility of using the mentioned phosphors as OSL dosimeters. In this context, the OSL efficiency corresponding to different stimulation wavelengths and different filters was analyzed for all the samples. The properties of the most efficient material, namely, MgO–La(OH)3, were further studied. Moreover, the repeatability and linearity of the OSL response, the fading of the OSL signal and the minimum detectable dose were investigated. Finally, feasibility of using these compounds in OSL dosimetry was assessed. Highlights: OSL dosimetry properties of MgO–La(OH)3 have been investigated for the first time. MgO–La(OH)3 stimulated with blue light showed the highest OSL response. Very good linearity in the dose range from of 0.1–700 Gy was found. A minimum detectable dose of 0.045 Gy was obtained. MgO–La(OH)3 could be considered as promising OSL dosimeter.