Samarium radioactive dating
Even though this method is highly reliable it does come with some drawbacks.For example the older the objects are the less Carbon-14 there is to measure.However, even uncertainties of only 1% in the half-lives lead to very significant discrepancies in the derived radioisotope ages.The recognition of an urgent need to improve the situation is not new (for example, Min et al. It continues to be mentioned, at one time or another, by every group active in geo- or cosmochronology (Schmitz 2012).
The uncertainties associated with most direct half-life determinations are, in most cases, still at the 1% level, which is still significantly better than any radioisotope method for determining the ages of rock formations.Carbon-14 is formed by cosmic rays blasting the protons causing a barrage of neutrons.The neutron barrage makes the original carbon form into a radioactive isotope.This is a key issue especially for very long half-life radioisotopes due to the very slow accumulation of decay particle counting data, because the statistical error is equal to the square root of the total decay particle counts.From a creationist perspective, the 1997–2005 RATE (arth) project successfully made progress in documenting some of the pitfalls in the radioisotope dating methods, and especially in demonstrating that radioisotope decay rates may not have always been constant at today’s measured rates (Vardiman, Snelling, and Chaffin 2000, 2005).
The thinner counting sources used, while resulting in low α-activities being measured, greatly reduced the counting uncertainty due to self-absorption of the emitted α-particles.