Radiometric 14C Dating: New Background Analysis, Basis of Improved Systems
liquid scintillation methods
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CitationTheodórsson, P. (1998). Radiometric 14C dating: New background analysis, basis of improved systems. Radiocarbon, 40(1), 157-166.
DescriptionFrom the 16th International Radiocarbon Conference held in Gronigen, Netherlands, June 16-20, 1997.
AbstractA recent broad study of the background of all types of low-level beta and gamma detectors has now made it possible to analyze its components more reliably and with greater detail. This general analysis is developed further here for gas proportional and liquid scintillation counters used in radiocarbon dating. The background of gas counters, which is dominated by secondary cosmic gamma radiation, is now well understood and can be described quantitatively. The background of liquid counters is less well understood and can only be described semiquantitatively, its analysis resting partly on estimates. Methods to reduce the background of both types of systems are described and their effectiveness discussed. This analysis may help in evaluating the quality of existing systems as well as in designing better ones.