Age dating contamination software for dating photos
He suggests that this radiocarbon is residual from the material’s creation.
If true, his claims would have far-reaching implications for the ages of these materials. The first is a set of 90 previously published radiocarbon AMS dates of old samples (most 100k years) that he has re-analyzed.
Thus, measurement of the radiocarbon concentration can give the time that the organism died.
Early measurements were done by counting the beta particles (high energy electrons) liberated in radiocarbon decay.
He makes additional claims that even non-biological carbonaceous material contains intrinsic radiocarbon.The second is a set of new samples that the RATE team collected and sent to a leading radiocarbon AMS laboratory to be dated.In both cases, I am convinced that the “intrinsic radiocarbon” is nothing more than contamination and instrument background.Most radiocarbon AMS laboratories process samples using a variant of the method described by Vogel , with apparatus and processes typically optimized for samples containing about 1 mg of carbon.
While samples containing less than 0.01 mg of carbon have been successfully dated, measurement precision begins to suffer below about 0.1 mg of carbon due to counting statistics.
The technique arises from radiocarbon being continually produced in the upper atmosphere by cosmic rays while it is continually decaying, so the atmospheric concentration has reached a fairly steady equilibrium.