Thermoluminescence yield of neutron irradiated Gd:Mg-Doped silica glass
Document Type
Article
Publication Date
1-1-2023
Abstract
The thermoluminescence yield of silica glass doped with Gd2O3 and MgO is investigated as a potential material for neutron dose measurement. The dosimetric materials used herein were prepared via the sol-gel route with concentration of rare earth metal oxides varying from 1 to 10 mol%. Reactor irradiations were made at 750 kW thermal power, producing thermal, epi-thermal and fast neutron fluxes of 5.61 x 10(12), 2.51 x 10(12), 2.58 x 10(12) n/cm(-2).s(-1), respectively. It has been found that 1 mol% Gd:Mg doped SiO2 exhibits excellent dosimetric response over the entire dose range investigated, obtaining a regression coefficient in excess of 96%. The thermoluminescence (TL) glow curves have been deconvolved, at best fit yielding a total of six peaks, the associated activation energies and frequency factors also being obtained. The results indicate sol-gel Gd:Mg doped SiO2 to offer promising performance as a low-cost passive radiation dosimeter, with utility for both radiotherapy and industrial applications.
Keywords
Dosimetry, Gd:Mg-doped silica, Neutron irradiation, Sol-gel, Thermoluminescence
Divisions
PHYSICS
Funders
Princess Nourah bint Abdul Rahman University Researchers Supporting
Publication Title
Radiation Physics and Chemistry
Volume
202
Publisher
Elsevier
Publisher Location
THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND