Radioisotope Dating with an Accelerator: A Blind Measurement

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Science  28 Jul 1978:
Vol. 201, Issue 4353, pp. 347-348
DOI: 10.1126/science.201.4353.347


The age of a sample of carbon dioxide has been determined by accelerating the carbon with a cyclotron and detecting the carbon-14 ions in the beam. Nitrogen-14 was eliminated as a background through the use of a range-separation technique. To avoid all possibility of experimenter bias, the measurement was conducted in a blind fashion.