Accelerator mass spectrometry dating

For this reason, the calibration curves for radiocarbon have usually been measured using counters. Many of these perform radiocarbon measurements and some of them will undertake sample pre-treatment.

The mass of these ions is then measured by the application of magnetic and electric fields.

"Radiocarbon" the journal of record of the field, has been published by the Arizona Board of Regents since 1989.

Accelerator Mass Spectrometry (AMS) is a technique for measuring the concentrations of rare isotopes that cannot be detected with conventional mass spectrometers.

In AMS the radiocarbon atoms are directly detected instead of waiting for them to decay.

Sample sizes are thus typically 1000 times smaller allowing a much greater choice of samples and enabling very selective chemical pre-treatment.

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