Establishing databases of Syrian ceramics, by using many techniques, was started a few years ago.The classification of ceramics based on typology is one of useful methods, but only when applied to whole or reconstructed objects [1, 2].During its lifetime the pottery absorbs radiation from its environment and it is this which creates thermoluminescence.
An annular Cd radioactive source was used to irradiate the samples in order to determine their chemical composition and the results were treated statistically using two methods, cluster and factor analysis.
Instead, a less sophisticated method that would deceive TL testing is to reuse original broken and unmarketable pieces.
Forgers commonly use the bottom of an original broken vessel, which has no commercial value, and make a new fake vessel on top of it.
Heating the mineral (or exposure to light) releases electrons, and produces a flash of light, setting the clock to 0 (maybe only partial).
Thereafter, luminescence accumulation is proportional to age.