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Bratislava Radiocarbon Measurements II

Published online by Cambridge University Press:  18 July 2016

S Usačev ,
J Chrapan ,
J Oravec  and
B Sitár
S Usačev
Affiliation:
Department of Nuclear Physics, Comenius University, Bratislava, Czechoslovakia
J Chrapan
Affiliation:
Department of Nuclear Physics, Comenius University, Bratislava, Czechoslovakia
J Oravec
Affiliation:
Department of Nuclear Physics, Comenius University, Bratislava, Czechoslovakia
B Sitár
Affiliation:
Department of Nuclear Physics, Comenius University, Bratislava, Czechoslovakia
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Radiocarbon dating facilities were built at the Department of Nuclear Physics, Comenius University in 1967 (Usačev et al, 1973). Initially, sample pretreatment and combustion systems for a proportional counter filled with CO2 were installed (Chrapan, 1966). One group adopted methods based on the use of methane (Usačev et al, 1973), a second group continued radiocarbon dating using an Oeschger-type proportional counter filled with CO2 (Chrapan, 1968). Later a modified Oeschger-type proportional counter with 1L active volume and with a background of approximately 8.10–2 bq was built (Schmidt and Chrapan, 1970). The pressure used in this counter is 105 Pa. 0.95 NBS oxalic acid is used as a standard of the present biosphere and the year 1950 refers to the zero year. Calculated radiocarbon ages are based on a 5568 ± 30 year half-life as recommended by the 8th International Radiocarbon Dating Conference. Statistical errors are calculated as a combination of the 3σ standard deviations of the sample count and the background. Samples were treated by HCl, NaOH or other chemicals according to their initial conditions.

Type
Research Article
Information
Radiocarbon , Volume 19 , Issue 3 , 1977 , pp. 389 - 391
Copyright
Copyright © The American Journal of Science 

References

Chrapan, J, 1966, Príprava merania nízkych aktivít: Radioisotopy, v 2, no. 7, p 317.Google Scholar
Chrapan, J 1968, Zariadenie pre rádiouhlikové datovanie a jeho pouzitie v pleistocéne a holocéne: Jaderná energie, v 14, no. 8, p 312.Google Scholar
Schmidt, Z and Chrapan, J, 1970, Datovanie osteologického materiálu fosílnych ursidae metódou 14C: Slovenský kras VIII, p 69–81.Google Scholar
Usačev, S, Povinec, P, Chudý, M, and Šáró, Š, 1973, Bratislava radiocarbon measurements I: Radiocarbon, v 15, p 443–450.Google Scholar