earticle

영어

Luminescence dating mainly depends on the firing temperature and raw materials used, Therefore, this study aimed to we analyze the thermoluminescence (TL) and multiwavelength optically stimulated luminescence (OSL) signals of three types of Korean ceramic samples-porcelain, celadon and buncheong. X-ray diffraction was used to identify their mineral phases. Measurements revealed distinct TL/OSL characteristics according to the material type and firing temperature. All samples fired at 600 °C exhibited a broad TL signal over a wide temperature range. Furthermore, TL peaks near 100 °C and 200 °C appeared in white porcelain and buncheong fired at 800 °C and 1200 °C, whereas celadon only exhibited a 100 °C peak with broadly distributed TL emissions. In addition, TL intensities substantially decreased in all materials fired at 1350 °C. For samples fired at 600 °C and 800 °C, OSL signals were clearly detected under infrared stimulation, likely due to residual feldspars. Porcelain exhibited the strongest OSL intensities at all firing temperatures, andits OSL signals were most sensitive to blue and ultravioletA(UVA) stimulation. By contrast, celadon and buncheong fired at 1200 °C exhibited very weak OSL intensities, while samples fired at 1350 °C produced no discernible OSL response. These observations indicate that to perform OSL dating of celadon and buncheong samples fired above 1200 °C further evaluations of signal intensity and sensitivity are necessary. The results confirm the potential applicability of UVA-OSL signals in luminescence dating of porcelain.