Poznań Radiocarbon Laboratory is equipped with the “Compact Carbon AMS” machine produced by NEC, and the self-designed lines for graphite production from natural samples.Our AMS machine is characteristic first by a low voltage accelerator, that makes the spectrometer construction simpler, its size smaller and the maintenance easier than in case of the larger AMS C results is comparable to those obtained with larger AMS systems.Nyerup's words illustrate poignantly the critical power and importance of dating; to order time.Radiocarbon dating has been one of the most significant discoveries in 20th century science.The radiocarbon method was developed by a team of scientists led by the late Professor Willard F.Libby of the University of Chicago in immediate post-WW2 years.Libby and a few of his students at the University of Chicago: in 1960, he won a Nobel Prize in Chemistry for the invention.It was the first absolute scientific method ever invented: that is to say, the technique was the first to allow a researcher to determine how long ago an organic object died, whether it is in context or not.
Radiocarbon (carbon-14 or C) forms continually today in the earth’s upper atmosphere.
Radiocarbon dating uses isotopes of the element carbon. Cosmic rays – high energy particles from beyond the solar system – bombard Earth’s upper atmosphere continually, in the process creating the unstable carbon-14. Because it’s unstable, carbon-14 will eventually decay back to carbon-12 isotopes.
Because the cosmic ray bombardment is fairly constant, there’s a near-constant level of carbon-14 to carbon-12 ratio in Earth’s atmosphere.
A few months activity of the laboratory demonstrated high precision of the AMS machine and fine purity and good reproducibility of graphite target preparation.
Radiocarbon dating is one of the best known archaeological dating techniques available to scientists, and the many people in the general public have at least heard of it.