Gas proportional counting in carbon dating
The minimum sample requirements for AMS dating are significantly smaller than for radiometric dating techniques, allowing even a few milligrams of sample to be dated for certain sample types.
Liquid scintillation counting involves converting the sample into a carbon-rich liquid, which is then added to a scintillator.
When beta particles are emitted, the scintillator will emit a flash of light.
All samples submitted for radiocarbon dating are measured by AMS. You only need to include the confirmation code in the package.
There are three principal techniques used to measure carbon 14 content of any given sample— gas proportional counting, liquid scintillation counting, and accelerator mass spectrometry.