journal article·2016-07Open access

Formation and characterization of ultrafine nanophosphors of lithium tetraborate (Li2B4O7) for personnel and medical dosimetry

Nasrin Khalilzadeh, Elias Bin Saion, Hamed Mirabolghasemi, Nayereh Soltani, Abdul Halim Bin Shaari, Mansor Bin Hashim, Noriah Mod Ali, Arash Dehzangi

Abstract

The present study demonstrates an innovative single-step thermal synthesis of nano-sized lithium tetraborate dosimeter and its characterization. The optimum calcination temperature and time for the synthesis of the nanoparticles material was 750 °C and 2 h, respectively. Characterization of the samples was carried out using X-ray diffractometry (XRD), Fourier transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), and thermoluminescence (TL). FT-IR, XRD and TEM results confirmed the formation of pure nano-crystalline lithium tetraborate. The product showed a linear response over a wide range of doses from 10−1 to 1.5 × 102 Gy. Moreover, the samples illustrate non-energy dependence among a wide range energy interval from 24 keV up to 1250 keV and almost no fading during one month storage.
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Research context

OpenAlex topics: Nuclear materials and radiation effects · Luminescence Properties of Advanced Materials · Chemical Synthesis and Characterization

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