Carbon 13 carbon dating

The resulting neutrons ( but attempts to measure the production rate directly in situ were not very successful.

The different isotopes of carbon do not differ appreciably in their chemical properties.

Such deposits often contain trace amounts of carbon-14.

These amounts can vary significantly between samples, ranging up to 1% of the ratio found in living organisms, a concentration comparable to an apparent age of 40,000.), or other unknown secondary sources of carbon-14 production.

The rates of disintegration of potassium-40 and carbon-14 in the normal adult body are comparable (a few thousand disintegrated nuclei per second).

This is small compared to the doses from potassium-40 (0.39 m Sv/year) and radon (variable).

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