Thermoluminescence dating range
The typical turn-round time for providing a date is circa 2-6 months, although, rapid dating (circa 4-6 weeks or sometimes less, depending on machine time and sample type) using our fast track service can be undertaken.We are open to suggestions of scientific collaboration as well as applications for funding for joint projects.XRF testing can be used to analyze virtually any material, but is most commonly used for metal analysis.Artemis Testing Lab also offers The scientific technique of thermoluminescence (TL) is used to evaluate the authenticity of archaeological pottery.The latest computer technology supports and completes analysis.X-Ray Fluorescence / XRF spectroscopy is widely used for qualitative and quantitative elemental analysis of archaeological samples.Each of the elements present produces a unique set of characteristic fluorescent X-rays, providing a conclusive analysis of the material composition.XRF results include the proportions of elements present in the sampled archaeological or historical material.
We extract a small sample from each piece we analyze and heat it until it glows with a faint blue light, known as TL.Thermoluminescence can test fired clay such as pottery, earthenware and terracotta, as well as porcelain, stoneware and the casting cores of bronzes.Artemis Testing Lab can test pieces from any culture, as long as they have been fired to above 500°C and the clay contains a sufficient quantity of TL minerals (quartz and/or feldspars), as well as radioactive inclusions (normally uranium, thorium and a radioactive form of potassium). Generally speaking, when a sample is drilled and there is no information available about the burial environment, one may expect /- 25% uncertainty, and this is more than adequate for authentication where the question is whether the piece was fired in antiquity or recently.It is a nondestructive analytical technique used to determine the elemental composition of materials.XRF analyzers measure the fluorescent (or secondary) X-ray emitted from a sample when it is excited by a primary X-ray source.
Electron Spin Resonance Dating (ESR): Fossil teeth are a ubiquitous component of prehistoric sites, and as a consequence, ESR dating of tooth enamel is very widely applicable in archaeology and palaeoanthropology.