221. LUMINESCENCE PROPERTIES AND APPLICABILITY OF TABLE SALT AS AN ACCIDENT DOSIMETER IN RADIOLOGICAL EMERGENCIES

Aleksandar Krleski; Ivana Sandeva; Ralica Stanoeva; Lihnida Stojanovska – Georgievska; Hristina Spasevska; Margarita Ginovska

doi:10.51466/JEEIT2492221079k

Aleksandar Krleski Faculty of Electrical Engineering and Information Technologies, Ss. Cyril and Methodius University in Skopje, 18 Rugjer Bošković Str., 1000 Skopje, Republic of Macedonia
Ivana Sandeva Faculty of Electrical Engineering and Information Technologies, Ss. Cyril and Methodius University in Skopje, 18 Rugjer Bošković Str., 1000 Skopje, Republic of Macedonia
Ralica Stanoeva South Western University, Faculty of Mathematics and Natural Sciences, 2700, Blagoevgrad, Bulgaria
Lihnida Stojanovska – Georgievska Faculty of Electrical Engineering and Information Technologies, Ss. Cyril and Methodius University in Skopje, 18 Rugjer Bošković Str., 1000 Skopje, Republic of Macedonia
Hristina Spasevska Faculty of Electrical Engineering and Information Technologies, Ss. Cyril and Methodius University in Skopje, 18 Rugjer Bošković Str., 1000 Skopje, Republic of Macedonia
Margarita Ginovska Faculty of Electrical Engineering and Information Technologies, Ss. Cyril and Methodius University in Skopje, 18 Rugjer Bošković Str., 1000 Skopje, Republic of Macedonia

DOI: https://doi.org/10.51466/JEEIT2492221079k

Keywords: retrospective dosimetry, thermoluminescence, optically stimulated luminescence

Abstract

In the event of a nuclear incident, it is important to assess the population's exposure thereto at individual level. In retrospective dosimetry, the absorbed dose is determined from materials that have wide application in everyday life. In the early stages after the accident, results obtained with retrospective dosimetry methods are used for triage and allow actions taken to focus on places where they are most needed, that is, they serve as support for making strategic decisions of action. Dosimetric data, in addition to assessment of individual doses, can also be used to assess long-term effects, as well as to improve epidemiological analyses. Materials suitable for examination with luminescent techniques are electronic components, building materials from which quartz can be isolated, porcelain, or dental ceramics.
Crystals characterized by good response to optically or thermally stimulated luminescence and widely distributed in the environment are very useful in retrospective dosimetry for dose estimates in nuclear incidents. When exposed to ionizing radiation, common salt, mainly comprised of NaCl, is a material that exhibits significantly greater luminescence than many other materials. The aim of this study is to investigate thermoluminescence (TL) and optically stimulated luminescence (OSL) characteristics of commercially available table salt.
A protocol for measuring luminescent properties in materials for retrospective dosimetry was applied. Both irradiated and nonirradiated samples showed satisfactory TL/OSL responses. A linear dose response was observed, identifying the material as suitable for retrospective dosimetry. Preheating and reading temperatures were determined, and the SAR method yielded highly accurate dose measurements.