Both Carbon-12 and Carbon-13 are stable, but Carbon-14 decays by very weak beta decay to nitrogen-14 with a half-life of approximately 5,730 years.After the organism dies it stops taking in new carbon.
Since Nitrogen gas makes up about 78 percent of the Earth's air, by volume, a considerable amount of Carbon-14 is produced.
Dates between 50.000 and 1 BP will be calibrated using the calibration curve Cal Pal2007_HULU.
The calibration algorithm will calculate the same results as Cal Pal-Beyond the Ghost.
However, at the moment of death, the amount of carbon-14 begins to decrease because it is unstable, while the amount of carbon-12 remains constant in the sample.
Half of the carbon-14 degrades every 5,730 years as indicated by its half-life.
In order to date the artifact, the amount of Carbon-14 is compared to the amount of Carbon-12 (the stable form of carbon) to determine how much radiocarbon has decayed.