Luminescence dating accuracy

Posted by / 31-Jul-2016 19:28

Luminescence dating accuracy

One is the “equivalent dose” determined from luminescence measurements on mineral crystals (usually quartz or feldspar) extracted from the material to be dated.The other is the “dose rate” to which the crystals have been exposed throughout antiquity.The SAR-OSL protocol was found to be intrinsically both more accurate and more precise than the SAR-ITL protocol.Luminescence dating refers to a group of methods of determining how long ago mineral grains were last exposed to sunlight or sufficient heating.One hundred random variants of the natural samples were generated by keeping the transition probabilities between energy levels fixed, while allowing simultaneous random variations of the concentrations of the 11 energy levels.The relative intrinsic of these techniques is estimated by simulating natural irradiation of the samples with a known burial dose, followed by simulation of the luminescence method used to recover the estimated dose ED.The complete sequence of the experimental protocols for several thermoluminescence (TL) and optically stimulated luminescence (OSL) techniques are simulated using the same set of kinetic parameters.

The age is then the ratio (equivalent dose)/(dose rate).ABSTRACT: In luminescence dating, the potassium concentration significantly contributes to the dose rate value in the age estimation.Within this study, fine-grain thermoluminescence dating has been applied on sherds of calcareous pottery of known age, excavated at a Roman site in Mallorca, Spain.It is useful to geologists and archaeologists who want to know when such an event occurred.It uses various methods to stimulate and measure luminescence.

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It includes techniques such as optically stimulated luminescence (OSL), infrared stimulated luminescence (IRSL), and thermoluminescence dating (TL).

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