Start Radioactivity and radioactive dating

Radioactivity and radioactive dating

View the full list On the weekend, a tank of radioactive material leaked from the closed Ranger uranium mine in the Northern Territory.

The cosmic rays originating from the Sun collide with nuclei in the upper atmosphere and are capable of breaking off individual neutrons.

These neutrons, once freed, can interact with atoms of nitrogen 14 in air, causing the expulsion of a proton and the formation of carbon 14.

One naturally assumes that the cosmic bombardment responsible for this transmutation remains constant over the millennia.

The rate of cosmic rays which hit the Earth depends on two very slowly changing factors: the solar activity and the Earth's magnetic field.

The key advantage is to require minute samples of fossil for the dating.

This technique was first implemented in France at the center of the low radioactivity of Gif-sur-Yvette in France with an instrument called Tandetron.

The most common of the radioactive dating techniques currently in use involves the isotope 14 of carbon, the radiocarbon.