Thermoluminescence dating laboratory
Warning about fakes using ancient materials What about airport x-rays and radiography? Thus, when one measures dose in pottery, it is the dose accumulated since it was fired, unless there was a subsequent reheating.
When pottery is fired, it loses all its previously acquired TL, and on cooling the TL begins again to build up.
General references Links to other useful sites BACK TO HOME PAGE HOW DOES THERMOLUMINESCENCE DATING WORK?
In all, close to two dozen physical quantities must be accurately measured to establish the relationship between doses of different kinds of radiation and light output, and to compute dose rate.
Since many years IPSES manufactures and supplies complete laboratories for thermoluminescence analysis for universities and research institutes both in Italy and abroad, providing not only all the necessary equipment, but also advice and training to guide in choosing the best solutions and using the equipment.
Our thermoluminescence laboratories are currently used in: Italian National Institute for the Physics of Matter (INFM); University of Milan-Bicocca; University of Torino; University of Lecce; University of Bari; the Research Institute Pastis CNRSM of Brindisi; the Arcadia - Technologies for Cultural Heritage, Milan; Department of Conservation and Restoration of the Museum of Xian (China); Tubitak Marmara Research Institute - CNRS, Gebze (Turkey); Department of Archeology – National Museum and Library of Myanmar.
The older the pottery, the more radiation it has absorbed and the brighter the pottery sample glows.
Should I be concerned about artificial irradiation? If the radioactivity of the pottery itself, and its surroundings, is measured, the dose rate, or annual increment of dose, may be computed.The alpha particle counting system Calph is a stand-alone low level alpha counter used for accurate alpha dose measurements.It is especially conceived for dating application in thermoluminescence analyses. It is an absolute dating method, and does not depend on comparison with similar objects (as does obsidian hydration dating, for example). The thermoluminescence technique is the only physical means of determining the absolute age of pottery presently available.