Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5499245 | Radiation Physics and Chemistry | 2017 | 18 Pages |
Abstract
Using six types of tailor-made doped optical fibres, we carry out thermoluminescent (TL) studies of X-rays, investigating the TL yield for doses from 20Â mGy through to 50Â Gy. Dosimetric parameters were investigated for nominal 8Â wt% Ge doped fibres that in two cases were co-doped, using B in one case and Br in the other. A comparative measurement of surface analysis has also been made for non-annealed and annealed capillary fibres, use being made of X-ray Photoelectron Spectroscopy (XPS) analysis. Comparison was made with the conventional TL phosphor LiF in the form of the proprietary product TLD-100, including dose response and glow curves investigated for X-rays generated at 60Â kVp over a dose range from 2Â cGy to 50Â Gy. The energy response of the fibres was also performed for X-rays generated at peak accelerating potentials of 80Â kVp, 140Â kVp, 250Â kVp and 6Â MV photons for an absorbed dose of 2Â Gy. Present results show the samples to be suitable for use as TL dosimeters, with good linearity of response and a simple glow curve (simple trap) distribution. It has been established that the TL performance of an irradiated fibre is not only influenced by radiation parameters such as energy, dose-rate and total dose but also the type of fibre.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
S.F. Abdul Sani, R. Hammond, S.M. Jafari, Norfadira Wahab, G. Amouzad Mahdiraji, A.S. Siti Shafiqah, H.A. Abdul Rashid, M.J. Maah, H. Aldousari, M. Alkhorayef, M. Alzimami, D.A. Bradley,