radiocarbon

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ra·di·o·car·bon

(rā'dē-ō-kar'bŏn),
A radioactive isotope of carbon, for example, 14C.

radiocarbon

Any of the radionuclides of carbon, the most common of which are 11C, which has a half-life of 20 minutes, and the beta-emitting 14C, which has a half-life of 5,730 years and is used to date archaeological, geological and hydrogeological material.

radiocarbon

(rā″dē-ō-kăr′bŏn)
A radioisotope of carbon; 11C and 14C are used in medical studies.
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.