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Analysis of lead-based archaeological pottery glazes by laser induced breakdown spectroscopy
Optics & Laser Technology ( IF 4.6 ) Pub Date : 2020-09-19 , DOI: 10.1016/j.optlastec.2020.106599
M. Kuzmanovic , A. Stancalie , D. Milovanovic , A. Staicu , Lj. Damjanovic-Vasilic , D. Rankovic , J. Savovic

The aim of this study was to demonstrate the potential of Laser-Induced Breakdown Spectroscopy (LIBS) in the analysis of pottery shards, which are commonly the most abundant artefacts recovered at archaeological sites. The analytical capability of LIBS in identification of elements characteristic to inorganic pigments used for decoration was assessed. Based on the specific elements detected in the LIBS spectra of glazes, correlations between the elemental composition of the glaze and the colours of the glazed surface were established. The results were in accordance with the previously reported Energy Dispersive X-ray Fluorescence (EDXRF) and Raman analyses of some of the samples, and with the presently performed XRF analysis. Two important parameters for plasma characterization, temperature and electron number density, were estimated from the spectral data. A potential use of LIBS for depth profiling was also investigated by analysing the silicon to aluminium intensity ratio as a function of the number of laser shots applied. Profilometry analysis of the damages created on the glazed surfaces by laser shots was used to estimate the average ablation depth and ablated mass.



中文翻译:

铅基考古陶瓷釉的激光诱导击穿光谱分析

这项研究的目的是证明激光诱导击穿光谱法(LIBS)在分析陶瓷碎片中的潜力,这些碎片通常是在考古现场发现的最丰富的文物。评估了LIBS在鉴定装饰用无机颜料所特有元素的分析能力。基于在釉的LIBS光谱中检测到的特定元素,建立了釉的元素组成与釉面颜色之间的相关性。结果与先前报道的一些样品的能量色散X射线荧光(EDXRF)和拉曼分析以及当前执行的XRF分析一致。等离子体表征的两个重要参数,温度和电子数密度,是根据光谱数据估算的。还通过分析硅铝强度比与所施加激光照射次数的关系,研究了LIBS在深度轮廓分析中的潜在用途。轮廓测量法分析了由激光照射在玻璃表面上造成的损伤,以估计平均烧蚀深度和烧蚀质量。

更新日期:2020-09-20
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