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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)206-212
Number of pages7
JournalJournal of Materials Research and Technology
Volume5
Issue number3
DOIs
StatePublished - Jul 1 2016

Keywords

  • Dosimeter
  • Energy dependence
  • Nanophosphors
  • Thermal treatment
  • Thermoluminescence

ASJC Scopus subject areas

  • Ceramics and Composites
  • Biomaterials
  • Surfaces, Coatings and Films
  • Metals and Alloys

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