radiocarbon

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radiocarbon

a radioactive isotope of carbon, esp carbon-14

radiocarbon

[¦rad·ē·ō′kär·bən]
(nuclear physics)
References in periodicals archive ?
These fluctuations in the historic radiocarbon clock mean that to find the calendar dates of artifacts, scientists need methods and samples that can independently verify the amount of carbon-14 in the atmosphere at a given time.
Tree rings are the gold standard for calibration because they can pinpoint individual years, but the tree ring dates reliable enough to validate absolute radiocarbon dates go back only about 12,500 years.
Scientists began using AMS in the 1970s, but recent advances mean that it can be used to measure radiocarbon in much smaller samples.