Hostname: page-component-745bb68f8f-5r2nc Total loading time: 0 Render date: 2025-01-31T15:03:15.526Z Has data issue: false hasContentIssue false
  • English
  • Français

Gakushuin Natural Radiocarbon Measurements I

Published online by Cambridge University Press:  18 July 2016

Kunihiko Kigoshi ,
Yoshio Tomikura  and
Kunihiko Endo
Kunihiko Kigoshi
Affiliation:
Department of Physics and Chemistry, Gakushuin University, Mejiro Toshimaku, Tokyo, Japan
Yoshio Tomikura
Affiliation:
Department of Physics and Chemistry, Gakushuin University, Mejiro Toshimaku, Tokyo, Japan
Kunihiko Endo
Affiliation:
Department of Physics and Chemistry, Gakushuin University, Mejiro Toshimaku, Tokyo, Japan
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Natural C14 measurements have been performed at Gakushuin University since 1959, using a proportional counter of 400 ml (Kigoshi and Tomikura, 1960). The counter presently in service is made of copper tubing and has an effective volume of 900 ml. Acetylene gas is used as counting gas at pressure 600–760 mmHg and prepared in the same way as in the case of 400 ml counter. The counter is shielded by iron sheets of 23-cm thickness and by anti-coincidence with a multianode propane-flow proportional counter of Houterman's type (Houtermans, 1958). A background of 5.6 counts/min has been attained with this counter arrangement. The modern carbon sample filled at 0°C and 760 mmHg shows an activity of 11.8 counts/min. The samples with code numbers greater than GaK-60 were measured by this counter.

Type
Research Article
Information
Radiocarbon , Volume 4 , 1962 , pp. 84 - 94
Copyright
Copyright © The American Journal of Science 

References

Craig, Harmon, 1953, The geochemistry of the stable carbon isotopes: Geochim. et Cosmochim. Acta, v. 3, p. 53–92.CrossRefGoogle Scholar
Crane, H. R., and Griffin, J. B., 1959, University of Michigan radiocarbon dates IV: Am. Jour. Sci. Radioc. Supp., v. 1, p. 173–198.Google Scholar
Hokkaido University Research Group, 1960, Cultural remains from Shirataki site: Hokkaido Univ. Repts. on the Research of Cultural Development in Northern Part of Japan, no. 15, p. 207–270.Google Scholar
Horie, S., 1957, Topographic study of lacustrine terraces and crustal movements around Lake Kutcharo, Hokkaido: Japanese Jour. Geology and Geography, v. 28, p. 1–10.Google Scholar
Houtermans, F. G., and Oeschger, H., 1958, Proportionalzählrohr zur Messung schwacher Aktivitäten weicher β-Strahlung: Helvitica Phys. Acta, v. 31, p. 117–126.Google Scholar
Ishida, E., et al., 1958, “Andes” The report of the University of Tokyo Sci. Exped. to the Andes, Bijutsu Shuppan-sha, p. 115–116, 335–336.Google Scholar
Kigoshi, K., and Tomikura, Y., 1960, Variation of radiocarbon concentration in modern wood: Chem. Soc. Japan Bull., v. 33, p. 1576–1580.Google Scholar
Kigoshi, K., and Tomikura, Y. 1961, Tritium and carbon-14 in the tree rings: Chem. Soc. Japan Bull., v. 34, p. 1738.Google Scholar
Kigoshi, K., and Endo, K., 1961, Variation of the atmospheric carbon-14 in recent years at Tokyo: Chem. Soc. Japan Bull., v. 34, p. 1739.Google Scholar
Kobayashi, K., 1958, Quaternary glaciation of the Japan Alps: Shinshu Univ., Faculty Liberal Arts and Sci. Jour., no. 8, pt. 2, p. 13–67, 12 pls. Google Scholar
Shimada, S., 1926, Shell midden found at Nakakawachi-gun Kawachinokuni: Nippon Soc. Jour. Anthropology, v. 41, p. 12.Google Scholar
Stuiver, Minze, Deevey, E. S., and Gralenski, J. L., 1960, Yale natural radiocarbon measurements V: Am. Jour. Sci. Radioc. Supp., v. 2, p. 49–61.Google Scholar
Sugihara, S., 1956, The stone age remains found at Iwajuku, Gunma Prefecture, Japan: Meiji Univ. Rept. on the Research by the Faculty of Literature, Archaeology, no. 1, p. 1–64.Google Scholar