Thermoluminescence properties of gamma‐irradiated nano‐structure hydroxyapatite |
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| Authors: | M Shafaei F Ziaie D Sardari M M Larijani |
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| Institution: | 1. Department of Medical Radiation Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran;2. Radiation Application Research School, Nuclear Science & Technology Research Institute, Tehran, Iran |
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| Abstract: | The suitability of nano‐structured hydroxyapatite (HAP) for use as a thermoluminescence dosimeter was investigated. HAP samples were synthesized using a hydrolysis method. The formation of nanoparticles was confirmed by X‐ray diffraction and average particle size was estimated to be ~30 nm. The glow curve exhibited a peak centered at around 200 °C. The additive dose method was applied and this showed that the thermoluminescence (TL) glow curves follow first‐order kinetics due to the non‐shifting nature of Tm after different doses. The numbers of overlapping peaks and related kinetic parameters were identified from Tm–Tstop through computerized glow curve deconvolution methods. The dependence of the TL responses on radiation dose was studied and a linear dose response up to 1000 Gy was observed for the samples. Copyright © 2015 John Wiley & Sons, Ltd. |
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| Keywords: | thermoluminescence hydroxyapatite γ ‐ray deconvolution |
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