出土青釉瓷片的释光测年方法研究  

Luminescence dating method for unearthed celadon glazed porcelain piece

作　　者：杨宏宇 赵晖 YANG Hongyu;ZHAO Hui(Shanghai Museum,Shanghai 200231,China;Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China)

机构地区：[1]上海博物馆,上海200231 [2]中国科学院西北生态环境资源研究院,兰州730000

出　　处：《核技术》2024年第1期33-41,共9页Nuclear Techniques

基　　金：上海博物馆馆级青年项目(No.2023YB02)资助。

摘　　要：文物承载着历史和文化,科学定年是文物研究的关键,释光测年技术是陶瓷类文物定年的重要手段。目前,陶瓷类文物释光定年较成熟的方法包括常规热释光法和热释光前剂量法,而使用光释光技术对陶瓷类文物定年鲜有报道。本文使用了常规热释光法、热释光前剂量法和光释光单片再生法(Single-aliquot Regenerativedose,SAR)对上海青龙镇遗址出土的一件青釉瓷片进行了测年。结果表明:使用常规热释光法测年时,其热释光信号在300~450℃几乎为零,无法准确计算等效剂量。采用热释光前剂量法的测年结果为(1.16±0.05) ka,说明该瓷器烧造于唐-五代;采用光释光SAR法的测年结果为(1.35±0.05) ka,烧造于唐代。本研究表明,光释光技术可用于瓷器文物定年,且对于本文中的青釉瓷片样品而言,热释光前剂量法和光释光SAR法的测年结果基本保持一致。[Background]Cultural relics are precious and nonrenewable resources.Scientific dating is the key to research on cultural relics,and luminescence technology is an important method for dating ceramic cultural relics.Currently,the methods for dating ceramic cultural relics include the conventional thermoluminescence(TL)method and the TL predose method.Few reports on the use of optically stimulated luminescence(OSL)to determine the age of cultural relics are available.[Purpose]This study aims to verify the reliability of the dating of porcelain cultural relics by luminescence method,and expand the method of dating porcelain cultural relics.[Methods]The conventional TL,TL predose,and OSL single-aliquot regenerative-dose(SAR)methods were employed to date an celadon glazed porcelain piece unearthed from the Qinglong Town ruins in Shanghai.Then,the dating results of three method were compared for applicability analysis.[Results]The results indicate that the signal for the porcelain obtained using the conventional TL method is almost zero when the temperature is between 300℃and 450℃,making it difficult to accurately calculate the equivalent dose.The ages of the TL predose and SAR methods are(1.16±0.05)ka and(1.35±0.05)ka,respectively,which are consistent within the error range.[Conclusions]The results of this study indicate that the OSL technique can be used to date porcelain cultural relics.For the celadon glazed porcelain piece examined in this study,the dating results of TL pre-dose and SAR methods are kept consistent.

关 键 词：青釉瓷片 测年 常规热释光法 热释光前剂量法 光释光法 

分 类 号：P597.3[天文地球—地球化学]