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Powder samples (from pottery and bronze cores) are mixed with acetone and allowed to settle, so that fine grains, approximately 1/100mm. These grains are deposited and dried onto aluminium discs (for fine-grain analysis) or rhodium (for pre-dose analysis).
curve is from the applied laboratory dose For the genuine vase, the archaeological signal(s) are well above the background and close to the signal from the applied laboratory dose.
For the modern vase the archaeological signal is barely above background and well below the TL signal from the applied laboratory dose.
The older the pottery, the more radiation it has absorbed and the brighter the pottery sample glows.
By measuring the TL, we can calculate how much radiation has been absorbed and use this information to calculate the approximate age of the pottery.