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    Thermal luminescence dating

    Any remaining powder is dried and used for radioactivity measurements to complete the dating calculation. When the glue is dry, they are cut into slices 1/4mm thick with a fine diamond blade. Each slice is soaked in acetone after cutting to remove the glue. The remaining core is crushed and used for radioactive analysis to complete the dating calculation.

    When a specimen is reheated, the trapped energy is released in the form of light (thermoluminescence) as the electrons escape.When a small sample of ancient pottery is heated it glows with a faint blue light, known as thermoluminescence or TL.During its lifetime the pottery absorbs radiation from its environment and it is this which creates thermoluminescence.Usually the electrons will reconnect with the molecules, but some will not.The electrons that dont reconnect eventually encounter imperfections in the microscopic structure of the ceramics or minerals, and they become trapped by these imperfections.

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