Accelerator Mass Spectrometry (AMS) is a highly sensitive analytical technique used to measure the concentration of isotopes in a sample. In AMS, isotopes are ionized and accelerated to high energies before being separated and counted using a mass spectrometer. This method allows for the detection of very low levels of isotopes, making it particularly useful in fields such as archaeology, geology, environmental science, and biology. AMS can be used to date archaeological artifacts, trace the movement of pollutants in the environment, and study the dynamics of biochemical processes. Overall, AMS is a powerful tool for precise and accurate isotopic analysis in a wide range of disciplines.