title: Low-dose photon irradiation response of Ge and Al-doped SiO2 optical fibres.
abstract: We have investigated the thermoluminescent response and fading characteristics of germanium- and aluminium-doped SiO(2) optical fibres. These optical fibres were placed in a solid phantom and irradiated using 6 and 10 MV photon beams at doses ranging from 0.02 to 0.24 Gy delivered using a linear accelerator. In fading studies, the TL measurements were continued up to 14 days post-irradation. We have investigated the linearity of TL response as a function of dose for Ge-, Al-doped optical fibre and TLD-100 obtained for 6 and 10 MV photon irradiations. We have concentrated on doses that represent a small fraction of that delivered to the tumour to establish sensitivity of measurement for peripheral exposures in external beam radiotherapy.
authors.affiliation: Department of Physics, Universiti Teknologi Malaysia, Johor Darul Takzim, Malaysia.
authors.forename: Nor H
authors.initials: NH
authors.lastname: Yaakob
authors.forename: Husin
authors.initials: H
authors.lastname: Wagiran
authors.forename: Md Imam
authors.initials: MI
authors.lastname: Hossain
authors.forename: Ahmad T
authors.initials: AT
authors.lastname: Ramli
authors.forename: D A
authors.initials: DA
authors.lastname: Bradley
authors.forename: Hasan
authors.initials: H
authors.lastname: Ali
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D005857:Germanium / Q000737:chemistry*; D055100:Optical Fibers; D017785:Photons; D011879:Radiotherapy Dosage; D012822:Silicon Dioxide / Q000528:radiation effects*; D013819:Thermoluminescent Dosimetry / Q000379:methods*
chemical_list: D005857:Germanium; D012822:Silicon Dioxide; D000535:Aluminum