Thanks to nuclear physics, mass spectrometers have been fine-tuned to separate a rare isotope from an abundant neighboring mass, and accelerator mass spectrometry was born. All Rights Reserved Terms and Conditions. When an organism dies, it ceases to take in new carbon, and the existing isotope decays with a characteristic half-life years.
The basic equation of radiometric dating requires that neither the parent nuclide nor the daughter product can enter or leave the material after its formation.
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- Harlow : Longman.
- Generally a shorter half-life leads to a higher time resolution at the expense of timescale.
- Carbon is a radioactive isotope of carbon, with a half-life of 5, years   which is very short compared with the above isotopes , and decays into nitrogen.
Accelerator Mass Spectrometry. Also, 6. Dormant volcanoes can also emit aged carbon.