National Taiwan University Radiocarbon Measurements I

Natural C14 measurements have been performed at the Dept. of Physics, National Taiwan University since 1965, using a cylindrical proportional counter of 1000 ml (Hsu et al., 1965). The proportional counter is operated with CO2 as the filling gas at a pressure of 1216 mm Hg at room temperature of 20°...

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Bibliographic Details
Published in:Radiocarbon 1970, Vol.12 (1), p.187-192
Main Authors: Hsu, Yuin-Chi, Huang, Chia-Yi, Lu, Shih-Chong
Format: Article
Language:English
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Summary:Natural C14 measurements have been performed at the Dept. of Physics, National Taiwan University since 1965, using a cylindrical proportional counter of 1000 ml (Hsu et al., 1965). The proportional counter is operated with CO2 as the filling gas at a pressure of 1216 mm Hg at room temperature of 20°C. Working voltage is 4.7 Kv, with a plateau length of more than 700 v and a plateau slope of ca. 1% per 100 v. Background is reduced to 5.1 counts/min and the counting rate of the NBS oxalic acid standard is 9.4 counts/min at the normal counting pressure of 1216 mm Hg.
ISSN:0033-8222
1945-5755
DOI:10.1017/S0033822200036274