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Monte Carlo simulation of correction factors for IAEA TLD holders
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
2010 (English)In: Physics in Medicine and Biology, ISSN 0031-9155, E-ISSN 1361-6560, Vol. 55, no 6, N161-N166 p.Article in journal (Refereed) Published
Abstract [en]

The IAEA standard thermoluminescent dosimeter (TLD) holder has been developed for the IAEA/WHO TLD postal dose program for audits of high-energy photon beams, and it is also employed by the ESTRO-QUALity assurance network (EQUAL) and several national TLD audit networks. Factors correcting for the influence of the holder on the TL signal under reference conditions have been calculated in the present work from Monte Carlo simulations with the PENELOPE code for Co-60 gamma-rays and 4, 6, 10, 15, 18 and 25 MV photon beams. The simulation results are around 0.2% smaller than measured factors reported in the literature, but well within the combined standard uncertainties. The present study supports the use of the experimentally obtained holder correction factors in the determination of the absorbed dose to water from the TL readings; the factors calculated by means of Monte Carlo simulations may be adopted for the cases where there are no measured data.

Place, publisher, year, edition, pages
2010. Vol. 55, no 6, N161-N166 p.
National Category
Physical Sciences
URN: urn:nbn:se:su:diva-50154DOI: 10.1088/0031-9155/55/6/N03ISI: 000275120300017OAI: diva2:382183
authorCount :3Available from: 2010-12-30 Created: 2010-12-21 Last updated: 2011-12-08Bibliographically approved

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