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AMS Radiocarbon Dating of Ancient Oriental Iron Artifacts at Nagoya University

Published online by Cambridge University Press:  18 July 2016

Toshio Nakamura ,
Masahiro Hirasawa  and
Kenzo Igaki
Toshio Nakamura
Affiliation:
Dating and Materials Research Center, Nagoya University, Chikusa, Nagoya 464-01 Japan
Masahiro Hirasawa
Affiliation:
School of Engineering, Nagoya University, Chikusa, Nagoya 464-01 Japan
Kenzo Igaki
Affiliation:
Faculty of Engineering, Tohoku University, Aoba, Sendai 980 Japan
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Abstract

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We present here the current status of AMS dating of iron artifacts at Nagoya University. We initially developed a “wet” method of carbon collection from iron samples, consisting of a resistance furnace and a “wet” trapping of the evolved CO2 with a saturated Ca(OH)2 solution, in which overall collection efficiency of carbon ranged from 50 to 60%. To improve the carbon-collection efficiency, we more recently constructed a “dry” system, consisting of an induction furnace followed by “dry” separation of the produced CO2 from combustion gases and conversion of the CO2 into a graphite target. We describe here mainly the performance of the “dry” separation system, tested using standard steel samples. We also report previously determined 14C dates on three ancient Oriental artifacts using the earlier “wet” procedure.

Type
V. Advances in Measurement Techniques
Information
Radiocarbon , Volume 37 , Issue 2 , 1995 , pp. 629 - 636
Copyright
Copyright © the Department of Geosciences, The University of Arizona 

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