OSL and TL retrospective dosimetry with leucite glass-based dental ceramics

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652052%3A_____%2F17%3AN0000017" target="_blank" >RIV/86652052:_____/17:N0000017 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.radmeas.2017.06.013" target="_blank" >http://dx.doi.org/10.1016/j.radmeas.2017.06.013</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.radmeas.2017.06.013" target="_blank" >10.1016/j.radmeas.2017.06.013</a>

Result language
angličtina
Original language name
OSL and TL retrospective dosimetry with leucite glass-based dental ceramics
Original language description
Dental ceramics are radiation sensitive materials and exhibit luminescent properties. Their samples can be potentially used for individual dose assessment in situations where retrospective dosimetry is required. In this work, we investigated dosimetry properties of two leucite glass-based dental ceramics using Optically Stimulated Luminescence (OSL) and Thermoluminescence (TL). We concentrated on characteristics as reproducibility, fading, optical bleaching, minimum detectable dose (MDD), dose response and photon energy response of TL and OSL signals. Both the dental ceramics exhibited very good reproducibility (<5% at 2σ level) when irradiated and measured repeatedly. Their luminescence response was found to be linear for a wide range of doses up to 8.5 Gy. The MDD values for the samples investigated were a few mGy. The ceramics are not tissue equivalent materials, and their luminescent signals measured were strongly dependent on incident photon energy. Because of fading and optical bleaching the OSL and TL signals were not stable in time. Especially optical bleaching represents a main limiting factor for dose reconstruction. However, one of the ceramics provided a relatively resistant high temperature TL peak for dosimetry.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics

Project
<a href="/en/project/VI20152020033" target="_blank" >VI20152020033: Methodologies for determination of personal radiation doses in the view of nuclear and radiological terrorism threats</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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