Thermoluminescence dosimetry properties and kinetic parameters of lithium potassium borate glass co-doped with titanium and magnesium oxides

Hashim S 1 , Alajerami YS 2 , Ramli AT 1 , Ghoshal SK 1 , Saleh MA 1 , Abdul Kadir AB 3 Show all authors , Saripan MI 4 , Alzimami K 5 , Bradley DA 6 , Mhareb MH 1

Affiliations 

  • 1 Department of Physics, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
  • 2 Department of Physics, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia; Department of Medical Radiography, Al-Azhar University, Gaza Strip, Palestine. Electronic address: yasser_ajr@hotmail.com
  • 3 Secondary Standard Dosimetery Lab, Malaysian Nuclear Agency, 4300 Selangor, Malaysia
  • 4 Faculty of Engineering, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
  • 5 Department of Radiological Sciences, Applied Medical Sciences College, King Saud University, P.O. Box 10219, Riyadh 11433 Saudi Arabia
  • 6 Centre for Nuclear & Radiation Physics, Department of Physics, University of Surrey, Guildford GU2 7XH, UK; Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
Appl Radiat Isot, 2014 Sep;91:126-30.
PMID: 24929526 DOI: 10.1016/j.apradiso.2014.05.023

Abstract

Lithium potassium borate (LKB) glasses co-doped with TiO2 and MgO were prepared using the melt quenching technique. The glasses were cut into transparent chips and exposed to gamma rays of (60)Co to study their thermoluminescence (TL) properties. The TL glow curve of the Ti-doped material featured a single prominent peak at 230 °C. Additional incorporation of MgO as a co-activator enhanced the TL intensity threefold. LKB:Ti,Mg is a low-Z material (Z(eff)=8.89) with slow signal fading. Its radiation sensitivity is 12 times lower that the sensitivity of TLD-100. The dose response is linear at doses up to 10(3) Gy. The trap parameters, such as the kinetics order, activation energy, and frequency factor, which are related to the glow peak, were determined using TolAnal software.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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