Bomb pulse radiocarbon dating


07-Nov-2017 01:23

However, open-air nuclear testing between 1955–1980 contributed to this pool.The different isotopes of carbon do not differ appreciably in their chemical properties.This resemblance is used in chemical and biological research, in a technique called carbon labeling: carbon-14 atoms can be used to replace nonradioactive carbon, in order to trace chemical and biochemical reactions involving carbon atoms from any given organic compound.These are relatively low energies; the maximum distance traveled is estimated to be 22 cm in air and 0.27 mm in body tissue.

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The resulting data, in the form of a calibration curve, is now used to convert a given measurement of radiocarbon in a sample into an estimate of the sample's calendar age.

The method was developed by Willard Libby in the late 1940s and soon became a standard tool for archaeologists.