Thermoluminescence dating accuracy
Subsequent irradiation, for example if an x-ray is taken, can affect accuracy, as will the "annual dose" of radiation a buried object has received from the surrounding soil.
Ideally this is assessed by measurements made at the precise findspot over a long period.
It will often work well with stones that have been heated by fire.
Chronometric dating, also known as chronometry or absolute dating, is any archaeological dating method that gives a result in calendar years before the present time.
Archaeologists and scientists use absolute dating methods on samples ranging from prehistoric fossils to artifacts from relatively recent history.
Recently new techniques (optically stimulated luminescence dating) using lasers and sensitive detectors have been used to improve the light detection.
Samples require about 100 milligram and the sample collection and handling step is critical. The rate of energy accumulation depends on the amount of background radiation to which the object has been exposed.