Investigation of dosimetric properties of newly-developed Li2B4O7:Ag+,La3+ using thermoluminescence (TL) technique


Ozdemir A.

JOURNAL OF ALLOYS AND COMPOUNDS, cilt.822, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

Özet

The aim of this study was to investigate the dosimetric properties of newly developed Li2B4O7 doped with Ag+ and La3+ using TL technique. In this study, the concentrations of Ag-1%wt and La0.1-3%wt dopants were introduced in Li2B4O7 by Solution Combustion Synthesis (SCS) method. The most TL sensitivity of the synthesized phosphors was recorded at 1%wt for each concentration of Ag+ and La3+. The structural characterizations were investigated using X-ray Diffraction (XRD), Scanning Electron Microscope (SEM). Besides, X-ray Luminescence (XL) spectrum was studied. The main dosimetric TL Peak of the Li2B4O7:Ag-1(%),La-1% exhibited a simple TL Peak located at 220 degrees C with a heating rate of 2 degrees Cs-1. Some dosimetric properties of this TL Peak, such as dose-response, reusability, fading in dark, were investigated under beta radiation. The TL signal of the phosphor exhibited a linear ranging from 0.1 to 50 Gy. The good reusability, by 4% standard deviation, was in the experiment cycle of 10. Fading was studied up to 4 weeks. The kinetic parameters using whole Glow curve, Initial rise (IR), Fraction Glow Curve (FGT) and CGCD were obtained and discussed. (C) 2020 Published by Elsevier B.V.