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Rudjer Bošković Institute Radiocarbon Measurements II

Published online by Cambridge University Press:  18 July 2016

Dušan Srdoč ,
Adela Sliepčevic ,
Josip Planinic ,
Bogomil Obelic  and
Branko Breyer
Dušan Srdoč
Affiliation:
Institute “Rudjer Bošković”, P.O.B. 1016, Zagreb, Yugoslavia
Adela Sliepčevic
Affiliation:
Institute “Rudjer Bošković”, P.O.B. 1016, Zagreb, Yugoslavia
Josip Planinic
Affiliation:
Institute “Rudjer Bošković”, P.O.B. 1016, Zagreb, Yugoslavia
Bogomil Obelic
Affiliation:
Institute “Rudjer Bošković”, P.O.B. 1016, Zagreb, Yugoslavia
Branko Breyer
Affiliation:
Institute “Rudjer Bošković”, P.O.B. 1016, Zagreb, Yugoslavia
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The present list contains dates of samples measured since our previous list (R., 1971, v. 13, p. 135–140). As before, age calculations are based on the Libby half-life 5568 ± 30 yr, and reported in years before 1950. The modern standard is 0.950 of the activity of NBS oxalic acid, giving a net counting rate of 21.68cpm. The background count is measured by a series of inactive samples such as marble, anthracite, petroleum coke, and old natural methane. Background count of these samples give a mean value of 6.05cpm. It is observed that marble always gives the highest value of background count while natural methane gives the lowest. Results, however, are within ± 1 σ of the mean value.

Type
Research Article
Information
Radiocarbon , Volume 15 , Issue 2 , 1973 , pp. 435 - 441
Copyright
Copyright © The American Journal of Science 

References

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