Thermoluminescence dating archaeology dating guy with baby

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During the 1970s and 1980s scientists at Simon Frasier University, Canada, developed standard thermoluminescence dating procedures used to date sediments.

In 1985, they also developed optically stimulated luminescence dating techniques, which use laser light, to date sediments.

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The intensity of the light is proportional to the amount of energy, which in turn corresponds to the length of accumulation time.MOST clays contain a few parts per million of uranium and thorium and a few per cent of potassium, so that the body of an ancient pot receives a radiation dose of the order of 1 r./g/yr., mainly from α-particles.Some of this energy is stored in the constituent minerals of the clay either by the creation of new lattice defects or by the filling of existing impurity traps.Most of the energy escapes as heat, but sometimes this energy separates electrons from the molecules that make up the minerals or ceramics.Usually the electrons will reconnect with the molecules, but some will not.

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