The effect of α irradiation on natural quartz is commonly known in geology, resulting in the formation of luminescent halos around radioactive inclusions. In archaeological ceramics quartz grains are present and can be surrounded by radioisotopes contained in the clay. The aim of this study is a first attempt to detect similar halos on the outer rims of quartz grains isolated from archaeological pottery. Such identification could be of interest in luminescence dating and as an alternative method for ceramic artworks authentication. Isolated grains were characterized with cathodoluminescence imaging, SEM-EDX and Raman spectroscopy. Some of the crystals were irradiated for reference with a microbeam of He⁺ accelerated ions and investigated by means of real-time ionoluminescence. Obtained results seem to confirm that the natural effect on archaeological quartz might be too weak to be detected with these techniques and underline the importance of the multi-technique approach to avoid misinterpretations.

α辐射对天然石英的影响在地质学中是众所周知的，从而导致放射性包裹体周围形成发光晕。在考古陶瓷中，存在石英颗粒，并且可以被粘土中所含的放射性同位素包围。这项研究的目的是首次尝试从考古陶器中分离出石英颗粒外缘上的类似光晕。这种识别在发光测年中可能是令人感兴趣的，并且可以作为陶瓷艺术品鉴定的替代方法。通过阴极荧光成像，SEM-EDX和拉曼光谱对分离出的晶粒进行表征。用He ⁺的微束照射一些晶体以供参考加速离子，并通过实时电离发光进行研究。获得的结果似乎证实，对考古石英的自然影响可能太弱，无法用这些技术检测到，并强调了采用多种技术方法以避免误解的重要性。