Start Examples of thermoluminescence dating

Examples of thermoluminescence dating

Then we need to correlate thermoluminescence light to radiation dose rate per year which the sample has received since its last clock resetting event.

Measuring the intensity of the luminescence can determine how much time has passed since the last time the object was heated.

The light is proportional to the amount of radiation absorbed since the material was last heated.

Unfortunately there are no affordable direct methods for dating pigments, except in some cases as we will see later.

Therefore, in archaeology, thermoluminescence dating works best for ceramics, cooking hearths, incidentally fire-cracked rocks, and deliberately fire-treated rocks, such as flint or chert.

Energy absorbed from ionizing radiation frees electrons to move through the crystal lattice, some of which are trapped at imperfections in the crystal lattice.

Later, heating releases the trapped electrons, producing light.

Electron trapping Energy absorbed from ionizing radiation frees electrons to move through the crystal lattice, where some are trapped at imperfections.