@article{oai:nagoya.repo.nii.ac.jp:00012868,
 author = {中村, 俊夫 and 田中, 孝幸 and 甲, 昭二 and 太田, 友子 and Nakamura, Toshio and Tanaka, Takayuki and Kabuto, Shoji and Ohta, Tomoko},
 journal = {名古屋大学加速器質量分析計業績報告書},
 month = {Mar},
 note = {An inter-laboratory comparison of ^<14>C dating studies with accelerator mass spectrometty (AMS) were performed between two ^<14>C facilities, Center for Chronological Research, Nagoya University and Mutsu Office, Aomori Research and Development Center, Japan Atomic Energy Agency. Both facilities are equipped with similar types of AMS system based on 3MV tandem accelerator manufactured by High Voltage Engineering Europe (HVEE), the Netherlands, that were introduced to each laboratory almost at the same time, around in 1996-1997. Two kinds of archeological samples used for the intercomparison were offered from the Education Board of Nirasaki City, Yamanashi prefecture. One part of them was a charred rice sample with known historical age, which was collected from the ruin of Shinpu-Jyo castle remains. The rice was charred when the castle was bumt in 1582, when the castle was abandoned by the lord, Katsuyori Takeda (1546-1582) during the battle against the combined military forces of Oda and Tokugawa families. Thus it is also a critical test of accuracy of the ^<14>C measurements on samples with known age. The other samples were charred pyrenes of peach and nutshells of Japanese walnut collected from the Shukujiri-Daini-Iseki archeological site in Nirasaki city, Yamanashi Prefecture. Totally 12 samples were shared between the two laboratories, by dividing the individual charred pyrenes and nutshells into two pieces, i.e., the shared pieces were divided from a piece of pyrene or nutshell. Thus exactly consistent ^<14>C results are expected for the divided pieces. The results from the two AMS laboratories were quite consistent within statistical uncertainties. In addition, calibrated ^<14>C ages for the charred rice samples were also consistent with the historical age when the Shinpu-Jyo castle was bumt down.},
 pages = {159--165},
 title = {^<14>C実験室間の比較研究 : 名古屋大学と原子力機構むつAMSシステム},
 volume = {21},
 year = {2010}
}