title: The dosimetric properties of phosphate glass systems prepared by different chemical nanomaterials.
abstract: The synthesis and characterization of glass systems were carried out using prepared nanocrystals injected into a glass matrix as a thermoluminescence (TL) activator using the melt-quenching method. Sample 1 was prepared as [40P2O550BaO:2.5MgO, 2.5Na2O, 5TiO2], sample 2 as [37.5P2O537.5CaO:25TiO2] and sample 3 as [50P2O5-50Li2O]. Formation of the synthesized compound was confirmed by studying the X-ray diffraction (XRD) patterns and scanning electron microscopy (SEM) images. An annealing procedure was carried out for 1 h at 400 °C. The glow curve position and shape shifted dramatically and linearly to the higher temperature values on increasing the heating rate. A heating rate of 30 °C/s was the most suitable for obtaining a high TL response. Samples 2 and 3 have the highest TL response, which approached the effective atomic number (Zeff) of natural bone. The observed TL sensitivity of the prepared samples 2 and 3 is less than that of commercially available 'TLD-200 chips' and LiF:Mg,Ti (TLD-100) phosphor. Sample [37.5P2O537.5CaO:25TiO2] would be useful in personal and environmental dosimetry for measuring high doses of gamma radiation. Sample [50P2O5-50Li2O] is a good dosimeter, although it requires the addition of an appropriate transitional metal (activator) to overcome the problem of high fading. Copyright © 2016 John Wiley & Sons, Ltd.
authors.affiliation: Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia.
authors.forename: Mohamed Anwar K
authors.initials: MA
authors.lastname: Abdelhalim
authors.affiliation: Medical Physics Section, Department of Radiodiagnostic and Medical Imaging, King Fahad Armed Forces Hospital, P.O. Box 9862, Jeddah, 21159, Saudi Arabia.
authors.forename: Bandar Mora
authors.initials: BM
authors.lastname: Al-Shamrani
mesh_terms: D005720:Gamma Rays; D005898:Glass / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D010710:Phosphates / Q000737:chemistry*; D013696:Temperature; D013819:Thermoluminescent Dosimetry; D013997:Time Factors; D014961:X-Ray Diffraction
chemical_list: D010710:Phosphates
keywords: P2O5 BaO glass; P2O5 CaO glass; P2O5 Li2O glass; dosimetry; phosphate glass; thermoluminescent