Thermoluminescence dating ceramics
These crystalline solids are constantly subjected to ionizing radiation from their environment, which causes some energized electrons to become trapped in defects in the molecular crystal structure.An input of energy, such as heat, is required to free these trapped electrons.The complex history of radioactive force on a sample can be difficult to estimate.However, thermoluminescence proven acceptable in providing approximate dates in the absence of more exact measures.The ceramics come from two recently excavated sites at “Hellenikon” and “Ligourio” in Argolid, Peloponnese, Greece. The new method of nuclear dating is described in the paper and appropriately evaluated.
Comparison with the conventional thermoluminescence (TL) method provided ages of the same order of magnitude.
Because this accumulation of trapped electrons begins with the formation of the crystal structure, thermoluminescence can date crystalline materials to their date of formation; for ceramics, this is the moment they are fired.
The major source of error in establishing dates from thermoluminescence is a consequence of inaccurate measurements of the radiation acting on a specimen.
This paper reports the results of studying four sherds from the archaeological site in Teotenango Mexico where the Matlatzinca culture blossomed before the Spanish arrival in America.
The determination of the age, was carried out with the thermoluminescence (TL) method.
The estimated ages were ∼1375 and 709 y for BN and LQ ceramics, respectively.