Thermoluminescence dating laboratory
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The age of the pottery, in principle, may then be determined by the relation Age = Accumulated dose / Dose per year Although conceptually straightforward, TL has proven to to be far from simple in practice.
Because of the somewhat short half-life of 14C, radiocarbon dating is not applicable to samples with ages greater than about 50,000 years, because the remaining concentration would be too small for accurate measurement.We have 3 fully automated, computer operated Riso Minisys TL readers for measuring the TL.Sample discs are mounted on a wheel and the readers are programmed to run heating and irradiation sequences.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.) approach up to a value of 135 ka for the deepest sample.
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Optical dating techniques employ ubiquitous quartz or feldspar grains to directly date the deposition of sedimentary units.