一种新型的微束X射线荧光谱仪及其在考古学中的应用  

A newly micro-X-ray fluorescence spectrometer and applications for non-destructive analysis of archaeological objects

作　　者：程琳[1] 丁训良[1] 刘志国[1] 潘秋丽[1] 初学莲[1] 冯松林[2] 

机构地区：[1]北京师范大学低能核物理研究所,射线束技术与材料改性教育部重点实验室,北京市辐射中心,北京100875 [2]中国科学院高能物理研究所多学科研究中心,北京100049

出　　处：《物理学报》2007年第12期6894-6898,共5页Acta Physica Sinica

摘　　要：介绍了一种新型的基于X光透镜的微束X射线荧光分析系统的结构、性能和特点及其在考古学中的应用.X光透镜将旋转阳极X射线发生器产生的X射线束聚成直径为几十微米的光束,实现了对考古样品的无损、原位、微区的分析.为了检验微束分析系统的可行性,分析了一片明代青花瓷残片中青花部位的元素分布,结果表明青花中Mn和Co元素的含量与青花颜色的深浅相一致;相关性分析表明Mn和Co呈现非常好的线性相关;Mn和Co的含量或比值对青花的产地和真伪的辨别有着重要的意义.The structure, performance and characteristics and the applications in archaeology of a new micro-X-ray fluorescence system based on rotating anode X-ray generator and polycapillary X-ray optics has been introducted in this paper. The polycapillary X- ray optics used here can focus the primary X-ray beam down to some tens of micro meters in diameters that enables non- destructive local analysis of sub-mm samples with minor/trace level sensitivity. In order to prove the potentials of this instrument used in archaeology, a piece of Chinese ancient blue and white porcelain produced in Ming Dynasty was analyzed. The results showed that intensities of MnKα, CoKα lines varied in accordance with the thickness of blue glaze, Correlation analysis indicated that the Mn and Co have good linear correlations. So, the concentrations or ratio of Mn and Co were crucial to determine the provenance of a Chinese ancient blue and white porcelain or to descriminate the true one from a fake.

关 键 词：X光透镜 微束X射线荧光 青花 

分 类 号：K854[历史地理—考古学及博物馆学] O434.19[历史地理—历史学]