Electron irradiation response on Ge and Al-doped SiO2 optical fibres

Abstract: This paper describes the thermoluminescence response, sensitivity, stability and reproducibility of SiO2 optical fibres with various electron energies and doses. The TL materials that comprise Al- and Ge-doped silica fibres were used in this experiment. The TL results are compared with those of the commercially available TLD-100. The doped SiO2 optical fibres and TLD-100 are placed in a solid phantom and irradiated with 6, 9 and 12MeV electron beams at doses ranging from 0.2 to 4.0Gy using the LINAC at Hospital Sultan Ismail, Johor Bahru, Malaysia. It was found that the commercially available Al- and Ge-doped optical fibres have a linear dose–TL signal relationship. The intensity of TL response of Ge-doped fibre is markedly greater than that of the Al-doped fibre. [Copyright &y& Elsevier]