Current 14C Measurements with the University of Washington Accelerator Facility for Radioisotope Dating
University of Washington
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CitationFarwell, G. W., Grootes, P. M., Leach, D. D., Schmidt, F. H., & Stuiver, M. (1983). Current 14C measurements with the University of Washington FN tandem accelerator. Radiocarbon, 25(2), 711-718.
PublisherAmerican Journal of Science
DescriptionFrom the 11th International Radiocarbon Conference held in Seattle, Washington, June 20-26, 1982.
AbstractOur accelerator mass spectrometry (AMS) system shows a one-to-one relationship between sample 14C concentrations determined by AMS and by Beta-counting. Measurements of unknown samples against a standard indicate that 14C concentration measurements to better than 2% can be made. For a 30-second data collection interval in a typical run of 100 intervals, the variability of the beam injected into the accelerator is ca 2%, that of the machine transmission is ca 4%, and counting statistics give 4.7% standard deviation for a sample of 80% of modern carbon.