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UCLA Radiocarbon Dates I∗

Published online by Cambridge University Press:  18 July 2016

G. J. Fergusson  and
W. F. Libby
G. J. Fergusson
Affiliation:
Institute of Geophysics, University of California, Los Angeles 24, California
W. F. Libby
Affiliation:
Institute of Geophysics, University of California, Los Angeles 24, California
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The measurements reported in this list have been made since the Radiocarbon Dating Laboratory at the Institute of Geophysics, UCLA became operational in August 1961. CO2 proportional counting was used for all measurements in an 7 · 5-L counter at 1 atm pressure. Dates have been calculated on the basis of the C14 half life of 5568 ± 30 yr, and 95% of NBS oxalic acid as modern standard. It is planned to discuss the half life in the light of the newer measurements at a conference in 1962. Prior to general agreement as to the new best figure we propose that all dates continue to be calculated on the old basis. Samples have been carefully inspected, cleaned, picked free of rootlets, and pretreated with HCl when necessary.

Type
Research Article
Information
Radiocarbon , Volume 4 , 1962 , pp. 109 - 114
Copyright
Copyright © The American Journal of Science 

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