Investigation of TL and OSL Signals under Different Experimental Process for Various Porcelain and Clay Base Items & Applied Radiological Incident Exercise

Retrospective dosimetry is one of the important tools of incident dosimetry in unplanned circumstances of dose calculation. Accident dosimetry is the evaluation of the external/internal radiation dose of people exposed to radiation incidents by various dosimetry methods. Any object in the incident area could be used as a natural dosimeter. So far, different materials such as ceramic or porcelain products, building materials, electronic components (IC parts, sim card, transistors), watch glass and phone screen have been studied following this purpose. In this study; the usability of various porcelain-based and ceramic-based materials which are commonly found around is investigated via luminescence methods; the list includes a sugar bowl, an ashtray, an electric fuse, an artificial dental implant with and without polishing material, ceramic nail file, the seal of prayer and moneybox. For retrospective dosimetry purposes, the effects of the sample preparation process on the TL signal is studied. Moreover, the effect of the temperature (for example fire) the material was exposed to before the radiation incident on the OSL signal, thermal quenching, changes in the OSL luminescence signal in different excitation modes are investigated. In addition, with the use of research materials, a radiation incident scenario was directed and the incident dose was measured using the TL and OSL techniques. According to the results, it was found that all examined samples can be used as dosimetric materials for retrospective dose measurement in case of a radiation incident. While comparing the incident scenario dose values calculated by the TL method with the TLD100s placed at the incident scene, it could be concluded that there is a deviation smaller than 10% in the piggy bank and artificial dental porcelain samples. The results obtained from the OSL measurements showed a deviation smaller than 9% in the fuse porcelain sample and a deviation smaller than 14% in the ceramic nail file sample which were more relevant in comparison to the other samples' results.