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Synthesis,thermoluminescence characterizations,and photon attenuation parameters of MgAl2O4 structure doped with different ions
Authors:Saif M. H. Qaid  Nassar N. Asemi  Abdullah Ahmed  Muath Alkadi  Sufyan Alawsh
Affiliation:1. Department of Physics & Astronomy, College of Sciences, King Saud University, Riyadh, Saudi Arabia;2. Center for Hybrid Nanostructures (CHyN) and Fachbereich Physik, Universität Hamburg, Hamburg, Germany;3. King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia;4. Department of Physics, Faculty of Science, Menoufia University, Shibin El Kom, Egypt
Abstract:In this work, different ion co-doped Mg1-xAl2O4 nanophosphors, coded as M5Cr-5LaA, M5Cr-5CuA, M0.07Si-0.03CeA, and M0.05Ti-0.05LaA, where 5Cr-5La, 5Cr-5Cu, 0.07Si-0.03Ce, and 0.05Ti-0.05La representing the added ions (mol%), were prepared using the sol–gel method. Phase structure, transmission electron microscope (TEM) images, and element feasibility were checked using X-ray diffraction, TEM analysis, and energy dispersive X-ray (EDX) spectroscopy. Their thermoluminescence (TL) response was checked using a 5 Gy γ-test dose. The M0.05Ti-0.05LaA sample was found to be best for the TL response with an ~1.1 times response compared with that of the MTS-700 commercial detector. A wide range of dose–responses for the M0.05Ti-0.05LaA sample was found up to a 20 Gy γ-dose with the lowest detectable dose of ⁓23 μGy. Photon attenuation parameter results were Zeff ⁓10, which mean that the M0.05Ti-0.05LaA sample could be considered as a near tissue equivalent material. Due to this study, the M0.05Ti-0.05LaA sample can be considered as a promising detector for application in personal and medical dosimetric monitoring.
Keywords:MgAl2O4 nanostructure  sol–gel  TL response  Zeff  γ-dose
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