article · Luminescence
In this work, different ion co-doped Mg<sub>1-x</sub> Al<sub>2</sub> O<sub>4</sub> nanophosphors, coded as M<sub>5Cr-5La</sub> A, M<sub>5Cr-5Cu</sub> A, M<sub>0.07Si-0.03Ce</sub> A, and M<sub>0.05Ti-0.05La</sub> A, 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 M<sub>0.05Ti-0.05La</sub> A 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 M<sub>0.05Ti-0.05La</sub> A sample was found up to a 20 Gy γ-dose with the lowest detectable dose of ⁓23 μGy. Photon attenuation parameter results were Z<sub>eff</sub> ⁓10, which mean that the M<sub>0.05Ti-0.05La</sub> A sample could be considered as a near tissue equivalent material. Due to this study, the M<sub>0.05Ti-0.05La</sub> A sample can be considered as a promising detector for application in personal and medical dosimetric monitoring.
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DOI: 10.1002/bio.4681
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