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    Equipment needed carbon dating statistical techniques for detecting and validating phonesthemes

    However, for samples aged around 50,000 years or older, accelerator mass spectrometry (AMS) is the only method that is sensitive enough to detect the minute amounts of remaining carbon-14.This involves ionizing the carbon compounds, accelerating them to extremely high energies with a particle accelerator and bending the ions' paths with an electric field.Rachel Wood does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond the academic appointment above.Australian National University provides funding as a member of The Conversation AU.Carbon-14 is a radioactive isotope produced in the upper atmosphere by cosmic rays and accounts for one in every 10 atoms of carbon in every living organism.

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    The lab is based in Miami, Florida, and is the world leader in carbon-14 analyses since 1979.The equipment required to do this is extremely large and costly.Now, Paolo de Natale and colleagues of the National Institute of Optics and the European Laboratory for Non-Linear Spectroscopy, both in Florence, Italy, have developed a much cheaper alternative that they say is almost as sensitive.The Conversation UK receives funding from Hefce, Hefcw, SAGE, SFC, RCUK, The Nuffield Foundation, The Ogden Trust, The Royal Society, The Wellcome Trust, Esmée Fairbairn Foundation and The Alliance for Useful Evidence, as well as sixty five university members.View the full list Radiocarbon dating has transformed our understanding of the past 50,000 years.

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