AMS radiocarbon dating of ancient Japanese documents and sutras

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  • 加速器質量分析法による古文書・古経典等の<14>^C年代測定 : 年代既知資料による検証とその応用研究例

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Abstract

History is a reconstruction of past human activity, evidence of which is remained in the form of documents or relics. For the reconstruction of historic period, the radiocarbon dating of ancient documents provides important informaiton. Although radiocarbon age is converted into calendar age with the calibration curve, the calibrated radiocarbon age is still different from the historical age when the document was written. The difference is known as "old wood effect" for wooden cultural property. The discrepancy becomes more serious problem for recent sample which requires more accurate age determination. We have measured radiocarbon ages of Japanese ancient documents and sutras written dates of which are clarified from the paleographic standpoint. The purpose is to clarify the relation between calibrated radiocarbon age and historical age of ancient Japanese document by AMS radiocarbon dating. And we have worked on radiocarbon dating of Japanese paper samples whose historical ages were unknown. This paper reports 68 radiocarbon ages of ancient Japanese documents, sutras, printed books and calligraphies.

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