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首页> 外文会议>Optics for arts, architecture, and archaeology IV >Terahertz analysis of stratified wall plaster at buildings of cultural importance across Europe
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Terahertz analysis of stratified wall plaster at buildings of cultural importance across Europe

机译：太赫兹分析了整个欧洲具有文化重要性的建筑物的墙面抹灰

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Terahertz (THz) radiation is being developed as a tool for the analysis of cultural heritage, and due to recent advances in technology is now available commercially in systems which can be deployed for field analysis. The radiation is capable of penetrating up to one centimetre of wall plaster and is delivered in ultrafast pulses which are reflected from layers within this region. The technique is non-contact, non-invasive and non-destructive. While sub-surface radar is able to penetrate over a metre of wall plaster, producing details of internal structures, infrared and ultraviolet techniques produce information about the surface layers of wall plaster. THz radiation is able to provide information about the interim region of up to approximately one centimetre into the wall surface. Data from Chartres Cathedral, France, Riga Dome Cathedral, Latvia, and Chartreuse du Val de Benediction, France is presented each with different research questions. The presence of sub-surface paint layers was expected from documentary evidence, dating to the 13th Century, at Chartres Cathedral. In contrast, at the Riga Dome Cathedral surface painting had been obscured as recently as 1941 during the Russian occupation of Latvia using white lead-based paint. In the 13th Century, wall paintings at the Chapel of the Frescos, Chartreuse du Val de Benediction in Villeneuve les Avignon were constructed using sinopia under-painting on plaster covering uneven stonework.. This paper compares and contrasts the ability of THz radiation to provide information about sub-surface features in churches and Cathedrals across Europe by analysing depth based profiles gained from the reflected signal.
机译：太赫兹（THz）辐射正被开发为分析文化遗产的工具，由于技术的最新发展，现在可以在可用于现场分析的系统中进行商业购买。辐射能够穿透最多一厘米的墙面灰泥，并以超快脉冲的形式传递，并从该区域的层反射。该技术是非接触，非侵入性和非破坏性的。虽然地下雷达能够穿透一米厚的墙面抹灰，但会产生内部结构的详细信息，而红外线和紫外线技术则会生成有关墙面抹灰的表层的信息。太赫兹辐射能够提供有关进入壁表面约一厘米的过渡区域的信息。分别提供了来自法国沙特尔大教堂，拉脱维亚里加圆顶大教堂和法国沙特尔use du Val de Benediction的数据，每个数据都有不同的研究问题。根据可追溯到13世纪的沙特尔大教堂的文献证据，预期存在地下涂料层。相比之下，在里加圆顶大教堂（Riga Dome Cathedral）的表面绘画在1941年俄罗斯占领拉脱维亚期间使用白色铅基涂料被遮盖。在13世纪，在阿维尼翁城的壁画教堂，夏特勒乌斯·德·瓦尔·本尼迪克特教堂的壁画是使用西诺比亚底漆在覆盖不平坦石材的灰泥上建造的。本文比较并对比了太赫兹辐射提供信息的能力。通过分析从反射信号获得的基于深度的轮廓，了解整个欧洲教堂和大教堂的地下特征。

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