Carbon-14 has a relatively short half-life of 5730 years, meaning that the amount of carbon-14 in a sample is halved over the course of 5730 years due to radioactive decay.
By about ten half-lives, or 58,000 years, the amount of carbon-14 left in the fossil is very little- about 1/1000 of the original number of carbon-14 atoms in the fossil.
One of the most frequent uses of radiocarbon dating is to estimate the age of organic remains from archaeological sites.
Carbon dating, also known as radiocarbon dating, is a method of estimating the age of carbon-bearing materials up to 60,000 years old.
Alpha particles are made of 2 protons and 2 neutrons.
Carbon dating was developed by American scientist Willard Libby and his team at the University of Chicago.
Plants take in atmospheric carbon dioxide by photosynthesis, and are ingested by animals.
So, every living thing is constantly exchanging carbon-14 with its environment as long as it lives. The carbon in its body will remain until it decomposes or fossilizes.
The amount of uranium present can be determined by irradiation to produce thermal fission of uranium-235, which produces another population of tracks, these related to the uranium concentration of the mineral.
Thus, the ratio of naturally produced, spontaneous fission tracks to neutron-induced fission tracks is a measure of the age of the sample.