Thermoluminescence yield of neutron irradiated Gd:Mg-Doped silica glass
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 irradi...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Published: |
Elsevier
2023
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/39424/ |
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| Summary: | 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. |
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