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PO-0796: Dosimetric characterisation of glass bead TLDs in proton beams

Thomas, R.A.S., Jafari, S. M., Bradley, D. A., Spyrou, N. M., Nisbet, A. and Clark, C.H. (2014) PO-0796: Dosimetric characterisation of glass bead TLDs in proton beams Radiotherapy and Oncology, 111 (1), PO-0796. S58-S58.

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Purpose/Objective: To investigate the feasibility of using glass beads as a novel thermoluminescence dosimeter (TLD) in clinical proton radiotherapy. The glass beads have several physical characteristics which suggest their suitability for use as TLDs in this area: a spherical physical shape with a hole in the middle that facilitate their use in 2D and 3D arrangements; chemically inert nature; small size of 1.5 mm diameter and 1 mm thickness; inexpensive and readily available; reusable; and importantly their TL light transparency with negligible self-attenuation which is very important for high LET beams. Proton beams have high LET and therefore can deposit dose nonuniformly across a detector. Readout of TL detectors can be influenced if any opacity is present causing self-attenuation of TL light [1], [2]. The transparency of glass beads to TL light means the beads have the potential to avoid such issues.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences
Faculty of Engineering and Physical Sciences > Physics
Authors :
Thomas, R.A.S.
Jafari, S.
Bradley, D.
Spyrou, N.
Nisbet, A.
Clark, C.H.
Date : 2014
DOI : 10.1016/S0167-8140(15)30914-2
Copyright Disclaimer : Copyright © 2014 Elsevier B.V. All rights reserved
Depositing User : Diane Maxfield
Date Deposited : 11 Jul 2018 15:22
Last Modified : 11 Jul 2018 15:22

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