Stratified structure in ancient paints studied by synchrotron confocal micro-X-ray method

ZI Ming; WEI Xiangjun; YU Haisheng; LEI Yong; HUANG Yuying

doi:10.11889/j.0253-3219.2015.hjs.38.060101

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Stratified structure in ancient paints studied by synchrotron confocal micro-X-ray method

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- Stratified structure in ancient paints studied by synchrotron confocal micro-X-ray method
  封面论文
- NUCLEAR TECHNIQUES Vol. 38, Issue 6, Article number: 060101(2015)
- 作者机构：
  
  1. 中国科学院上海应用物理研究所张江园区,上海,201204
  2. 中国科学院大学,北京,100049
  3. 故宫博物院,北京,100009
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2015.hjs.38.060101
  CLC：
- Published：05 June 2015
- 稿件说明：
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ZI Ming, WEI Xiangjun, YU Haisheng, et al. Stratified structure in ancient paints studied by synchrotron confocal micro-X-ray method[J]. Nuclear techniques, 2015, 38(6): 060101
DOI：

ZI Ming, WEI Xiangjun, YU Haisheng, et al. Stratified structure in ancient paints studied by synchrotron confocal micro-X-ray method[J]. Nuclear techniques, 2015, 38(6): 060101 DOI： 10.11889/j.0253-3219.2015.hjs.38.060101.

摘要

同步辐射共聚焦X射线方法是一种元素成分及其化学结构的三维无损分析方法，在地质、考古、环境、生物及材料等领域具有重要的应用。在上海光源的硬X射线微聚焦光束线站(BL15U)建立共聚焦X射线实验方法，并用于故宫彩绘样品的制作工艺及层状结构分析。基于BL15U的K-B聚焦系统，在能散探测器前采用会聚毛细管半透镜实现与K-B聚焦镜焦点的共聚焦状态，深度分辨在8.04 keV(Cu-K?)为31.5 ?m，可以开展共聚焦微束X射线荧光(Micro-X-ray Fluorescence

Micro-XRF)和共聚焦微束X射线吸收精细结构(Micro-X-ray Absorption Fine Structure

Micro-XAFS)实验研究。对故宫斗彩陶瓷和彩绘样品进行了元素及其化学态的深度分布分析，获得了斗彩陶瓷特有的三层釉结构以及彩绘样品内部颜料的化学信息。实验结果表明，该系统具有较高的空间分辨和探测灵敏度，是文物样品三维无损分析的有力工具。

Abstract

Background: Confocal micro-X-ray method is a sensitive tool for analysis of three dimensional (3D) elemental composition and chemical species

and has many important applications in the research fields such as geology

archaeology

environment

biology and materials sciences. Purpose: Confocal micro-X-ray method was established at BL15U in Shanghai Synchrotron Radiation Facility (SSRF) and applied to study the stratified structure of some kind of paints in the Forbidden City. Methods: By the combination of pollycapillary half lens and K-B mirrors

a confocal micro volume is formed by the overlapped foci of these two focusing optics. The confocal system had a depth resolution of about 31.5 ?m at 8.04 keV and can be used to perform the confocal micro X-ray fluorescence (Micro-XRF) and confocal micro X-ray absorption fine structure (Micro-XAFS) experiments. Results: A typical structure of Doucai with three glaze layers has been disclosed by the confocal Micro-XRF. The chemical information of Fe inside the paint was obtained by confocal Micro-XAFS. Conclusion: The confocal micro-X-ray facility is indicated to be a powerful tool for 3D analysis of fine arts samples. Abstract

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