Direct Detection of Radiocarbon Using Accelerator Techniques and Its Application to Age Measurements

• Nakamura Toshio

  Radioisotope Center, Nagoya University

• Nakai Nobuyuki

  Department of Earth Science, Faculty of Science, Nagoya University

• Sakase Takao

  Seiko Instruments and Electronics Ltd.

• Kimura Masaya

  Department of Earth Science, Faculty of Science, Nagoya University

• Ohishi Shoji

  Department of Earth Science, Faculty of Science, Nagoya University

• Taniguchi Makoto

  Radioisotope Center, Nagoya University

• Yoshioka Shigeo

  Department of Earth Science, Faculty of Science, Nagoya University

抄録

Radiocarbon measurements by the direct detection of ¹⁴C atoms with the Tandetron accelerator mass spectrometer were begun in the autumn of 1983 at Nagoya University. The ¹⁴C dating of geological and archeological samples is routinely performed with a precision of ±1% (±83 years) using a carbon-silver target containing only 2–5 mg of carbon in measurements lasting 5 hours. The accuracy of a single ¹⁴C measurement was estimated by a reproducibility test to be ±1.34%. Radiocarbon ages measured with the Tandetron spectrometer for ten natural samples agreed well with those obtained by radioactivity measurements. The ¹⁴C background of the spectrometer limits the measurable age to less than 60000 y BP. The limit will be extended to about 82000 y BP if the ¹⁴C background is eliminated.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 24 (12), 1716-1723, 1985

  社団法人応用物理学会

詳細情報

• CRID: 1570291227398152832
• NII論文ID: 110003946532
• NII書誌ID: AA10457675
• 本文言語コード: en
• データソース種別:
  • CiNii Articles