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Evaluation of absolute ages and temperatures for burnt archaeological materials using thermoluminescence (TL) and optically stimulated luminescence (OSL)

使用热释光 (TL) 和光刺激发光 (OSL) 评估烧毁的考古材料的绝对年龄和温度

基本信息

批准号：
10480024
负责人：
HASHIMOTO Tetsuo
金额：
$ 7.3万
依托单位：
NIIGATA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B).
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

项目摘要

Some radiation-induced luminescence color images, including afterglow (AG) or radiophospherescence, and thermoluminescence (TL), were conveniently photographed by means of a commercially available negative color film after the irradiation of X-ray on pottery slices, named as Sueki. The resultant photographs, particularly AG color images (AGCIs), showed a variety of emission patterns dependent on kinds of minerals or thermal history of pottery. The AGCIs from archaeological pottery slices are subjected to the color image analysis to obtain more quantitative information. The relationships of two color intensity-ratios, such as green/red and blue/red, were found to reflect clearly the origin of pottery. While, the dependence of luminescent color properties on the heating temperatures suggests to clarify thermal history of kilns and potteries using stepwise heating of their ingredient-clay.The discussion was made on that provenance identification of ancient ceramics and thermal history of … More kilns could be evaluated using AGCIs from the slices.Basically, the existence of atomic hydrogens or hydrogen radicals besides intense Al-centers was ascertained in ESR spectrum measurements of a variety of natural quartzes after irradiation at 77K.The remarkable decrease of the Al-center signals, coincident with the complete disappearance of ESR-signal due to hydrogen radicals, occurred recognized after warming once up to room temperature, giving positive correlation between the hydrogen radical signals and reducing proportion of the Al-centers. On the basis of these experiments, it was confirmed that hydrogen radicals derived from radiolysis of OH-related impurities could operate as a "killer" of radiation-induced Al-centers, or main origin of blue thermoluminescence (BTL), suggesting important role of a phase-transition temperature of β-quartz/tridymite to the TL-property changes.Subsequently, a constraction of an automatic luminescence measuring system incorporated a small X-ray generator, involving both TL and OSL (Optically Stimulated Luminescence), is also described. Less

利用市售彩色底片拍摄了X射线照射后的陶器薄片（Sueki）的余辉（AG）、放射性磷光（radiophospherescence）和热释光（TL）等辐射发光彩色图像。由此产生的照片，特别是AG彩色图像（AGCI），显示了各种发射模式依赖于矿物的种类或陶器的热历史。为了获得更多的定量信息，对考古陶片中的AGCI进行了彩色图像分析。发现两种颜色强度比的关系，如绿色/红色和蓝色/红色，清楚地反映了陶器的起源。同时，发光颜色特性与加热温度的依赖关系表明，可以利用窑陶原料--粘土的分步加热来阐明窑陶的热历史，并对古陶瓷的产地鉴定和窑陶的热历史进行了讨论 ...更多信息在77 K辐照后，各种天然石英的ESR谱测量基本上确定了除强Al心外，还存在原子氢或氢自由基。Al心信号的显著降低与氢自由基引起的ESR信号的完全消失相一致，给出氢自由基信号与Al中心的还原比例之间的正相关性。在这些实验的基础上，证实了由OH相关杂质的辐解产生的氢自由基可以作为辐射诱导的Al中心的“杀手”，或蓝色热释光（BTL）的主要来源，这表明β-石英/鳞石英的相变温度对TL性质变化的重要作用。本文还介绍了一种结合小型X射线发生器的自动发光测量系统，包括TL和OSL（光激励发光）。少