This requires sufficient atoms to be present to provide a large enough decay rate, as described above.
C dating and other measurements using accelerator mass spectrometry (AMS).
The accelerator is used to help remove ions that might be confused with radiocarbon before the final detection.
The sample is put into the ion source either as graphite or as carbon dioxide.
It’s only good if you don’t mind burning quite a lot of the object you’re trying to date.In the second half of the accelerator, the now positively charged ion is accelerated away from the highly positive centre of the electrostatic accelerator which previously attracted the negative ion.When the ions leave the accelerator they are positively charged and are moving at several percent of the speed of light.The positive-to-negative ion conversion is the reverse of that conventionally used in accelerator mass spectrometry (AMS) and is compatible with plasma ion sources that may be significantly more efficient and capable of greater output than are AMS sputter ion sources.Accelerator Mass Spectrometry (AMS) is a technique for measuring the concentrations of rare isotopes that cannot be detected with conventional mass spectrometers.