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    Paleoanthropologists and archaeologists must always be aware of possible radiocarbon sample contamination that could result in inaccurate dates.

    The infra-red laser (continuous wavelength 60W 1064 nm Nd-YAG) is capable of spot analysis (100-300 µm spot size), single grain total fusion, and incremental laser step-heating of K-rich minerals and whole rocks.In other words, the change in numbers of atoms follows a geometric scale as illustrated by the graph below.other carbon isotopes in the same ratio as exists in the atmosphere.Following death, however, no new carbon is consumed.This allows the dating of much older and smaller samples but at a far higher cost.Although, organic materials as old as 100,000 years potentially can be dated with AMS, dates older than 60,000 years are still rare.

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