Characterization of Ge-doped optical fibres for MV radiotherapy dosimetry
نویسندگان
چکیده
منابع مشابه
An investigation of the thermoluminescence of Ge-doped SiO2 optical fibres for application in interface radiation dosimetry.
We investigate the ability of high spatial resolution (∼120 μm) Ge-doped SiO2 TL dosimeters to measure photoelectron dose enhancement resulting from the use of a moderate to high-Z target (an iodinated contrast media) irradiated by 90 kVp X-rays. We imagine its application in a novel radiation synovectomy technique, modelled by a phantom containing a reservoir of I2 molecules at the interface o...
متن کاملThermoluminescence characteristics of Ge-doped optical fibers with different dimensions for radiation dosimetry.
Important thermoluminescence (TL) properties of five (5) different core sizes Ge-doped optical fibers have been studied to develop new TL material with better response. These are drawn from same preform applying different speed and tension during drawing phase to produce Ge-doped optical fibers with five (5) different core sizes. The results of the investigations are also compared with most com...
متن کاملLow-dose photon irradiation response of Ge and Al-doped SiO2 optical fibres.
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...
متن کاملAssessment of Ge-doped optical fibres as a TSL-mode detector
This study analyses the thermally stimulated luminescence (TSL) or thermoluminescence glow curve between 300 and 773 K of germanium-doped silica optical fibre and finds a main glow peak at around 500 K with a characteristic spectral emission centred at 400 nm. Both features are particularly suitable for dosimetry. Thus, an investigation by the TSL technique of some first clinically relevant fea...
متن کاملAssessment of Ge-doped optical fibres subjected to x-ray irradiation
We have reported the thermoluminescence (TL) response of five different diameters ~120, 241, 362, 483, and 604 μm of 6 mol percent Ge-doped optical fibres. The perfomance of the Ge-doped optical fibre are compared with commercially available TLD-100 chips (LiF:Mg,Ti) in terms of their sensitivity and minimum detectable dose (MDD). The irradiation was performed using X-ray machine (Model ISO ‘Na...
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ژورنال
عنوان ژورنال: Radiation Physics and Chemistry
سال: 2014
ISSN: 0969-806X
DOI: 10.1016/j.radphyschem.2013.12.017