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University of Tokyo Radiocarbon Measurements III

Published online by Cambridge University Press:  18 July 2016

Jun Sato
Affiliation:
Carbon Dating Laboratory, University of Tokyo, Japan‡
Tomoko Sato
Affiliation:
Carbon Dating Laboratory, University of Tokyo, Japan‡
Yasuko Matsui
Affiliation:
Carbon Dating Laboratory, University of Tokyo, Japan‡
Hisashi Suzuki
Affiliation:
Carbon Dating Laboratory, University of Tokyo, Japan‡
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Radiocarbon measurements in this list were made from Sept. to Dec., 1968. They are based on acetylene counting in an Oeschger-Houtermans-type proportional counter (1 L) at pressure 1 atm. All data are based on duplicated measurements. For calculation of ages, 95% activity of NBS oxalic acid is used as the modern standard and value of 5570 + 30 years is used for the half-life of C14. Dates are expressed in years B.P. (before A.D. 1950). Error corresponds to 1σ deviation of sample net counting rate as well as modern standard and background. Details of procedures are given in previous reports (R., 1968, v. 10, p. 144–148; 1969, v. 11, p. 509–514)

Type
Research Article
Copyright
Copyright © The American Journal of Science 

References

Kigoshi, K. and Endo, K., 1963, Gakushuin natural radiocarbon measurements II: Radiocarbon, v. 5, p. 109117.CrossRefGoogle Scholar
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Sato, Jun, Sato, Tomoko, Otomori, Yasuko, and Suzuki, Hisashi, 1969, University of Tokyo radiocarbon measurements II: Radiocarbon, v. 11, p. 509514.CrossRefGoogle Scholar
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