Accelerator mass spectrometry dating online dating chat nz
"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.
After chemical pre-treatment, the samples are burnt to produce carbon dioxide and nitrogen.
Accelerating the ions to high energy has one more advantage.
AMS, on the other hand, can in principle detect a much higher proportion (typically about 1% of the total) allowing sample sizes to be smaller by a factor of about a thousand.
The method is relatively new because it needs very complicated instruments first developed for Nuclear Physics research in the late 20th century.
The chemical pre-treatment depends on the type of sample.
As an example bones are treated as follows: Several of these procedures are done in an automated continuous flow system.
The sample is put into the ion source either as graphite or as carbon dioxide.