Two tetradrachms from the Diniacopoulos collection housed at Queen's University are the subject of this study. Previously, a protocol had been developed for a coin of the Emperor Claudius from the same collection, which showed that a combination of Time‐of‐Flight Secondary Ion Mass Spectrometry (TOF‐SIMS), Energy Dispersive X‐ray Spectroscopy (EDX), and X‐ray Photoelectron Spectroscopy (XPS) could provide information and identify areas of interest for additional analysis, thereby minimizing the amount of damage incurred. This is now applied to two more tetradrachms issued by the same mint and dated respectively to the time of Tiberius (14–37 AD) and Nero (54–68 AD). Preliminary results have indicated both differences and similarities between these coins and that from the time of Claudius. By comparing these results, it is hoped that information as to how the coins were made can be elucidated, shedding light on the different components and composition of the alloys produced in the same mint but at different time periods. Moreover, the detection and the identification of corrosion products, along with understanding what restorations methods may have been applied in the past, can guide conservators to determine what conservation treatment and preservation strategies are most appropriate for these antiquities.

中文翻译：

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XPS和TOF‐SIMS应用于古代文物的研究：自朱利奥·克劳迪亚王朝时代起对亚历山大四足动物的进一步研究

女王大学的Diniacopoulos藏品中的两个四足动物是本研究的主题。以前，曾为同一系列的克劳迪乌斯皇帝硬币开发过一种协议，该协议表明飞行时间二次离子质谱（TOF-SIMS），能量色散X射线光谱法（EDX）， X射线光电子能谱（XPS）可以提供信息并确定感兴趣的区域以进​​行其他分析，从而最大程度地减少损坏。现在，这适用于同一薄荷糖发行的另外两个四叶草，分别追溯到提比略（14-37 AD）和尼禄（54-68 AD）时代。初步结果表明，这些硬币与克劳迪乌斯（Claudius）时代以来的硬币既有相似之处，也有相似之处。通过比较这些结果，希望可以阐明有关硬币制作方法的信息，以阐明在同一枚铸币中但在不同时间段生产的合金的不同成分和组成。此外，腐蚀产物的检测和识别，以及对过去可能采用的修复方法的了解，可以指导保护者确定最适合这些古物的保护处理和保护策略。