accelerator mass spectroscopy
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CitationWatchman, A. L., Lessard, R. A., Jull, A. J. T., Toolin, L. J., & Blake, W. (1993). 14C dating of laser-oxidized organics. Radiocarbon, 35(2), 331-333.
AbstractWe used a continuous krypton ion laser to rapidly oxidize milligram-sized fragments of coniferous driftwood of known ages, and dated the resulting carbon dioxide by accelerator mass spectrometry (AMS). AMS 14C ages of non-pretreated young wood from different parts of two logs were within 10% of the ages of conventionally determined alkaline insoluble fractions. The age of the oldest whole wood measured after laser oxidation was within the error ranges of conventional values.