Akademik Veri Yönetim Sistemi
Physics and Chemistry of Solid State, cilt.26, sa.3, ss.666-672, 2025 (ESCI)
This study investigates the thermoluminescence (TL) and optically stimulated luminescence (OSL) properties of natural salt minerals to evaluate their potential for radiation dosimetry. Samples were sourced from the Central Anatolia region of Türkiye, the Himalayas (Asia), and Asal Lake (East Africa), and their dosimetric characteristics—including glow curve structure, dose-response, signal fading, and repeatability—were systematically analyzed. All samples exhibited a highly linear dose-response relationship for irradiation doses between 0.1 and 10 Gy, with correlation coefficients (R2) ranging from 0.991 to 0.999. The minerals demonstrated high sensitivity, with significant signal intensities produced by doses as low as 25 mGy. The TL glow curve structure was found to be dose-dependent, featuring three peaks at approximately 80–100°C, 125–190°C, and 230–290°C at low doses (0.1 Gy), and two dominant peaks at higher doses (10 Gy). A significant difference in signal stability was observed: while the OSL signal faded rapidly to background levels within approximately two seconds, the TL signal exhibited much greater stability. The results confirm that the stable, reproducible, and dose-dependent TL signal of natural salt makes it a valuable, low-cost material for accident dosimetry. Further long-term fading studies are required to fully validate its potential for geological and archaeological dating.