Leibniz laboratory for radiometric dating

These visit web page can be applied with a sample as small as a milligram.

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As yet, the system has been used to produce graphite targets from plant macrofossils, charcoal, peat, bones, shells and pollen extracts.

Due to the very small sample amount, considerable effort is put into avoiding contamination with either modern or inactive carbon during the sample preparation.

Fe-C powder is pressed into a tablet which is used as a target in the sputter ion source of the accelerator.

The target is stored in argon atmosphere until the measurement.

Results are calculated using the Libby half-life and are given in the B.Low energy AMS spectrometer (called Tandy) at ETH Zurich, Switzerland or their 6MV machine.You may also take the "AMS Instrument Tour" (2.5MV AMS spectrometer) presented by Woods Hole Oceanographic Institution, Massachusetts, USA. Directly before the graphitisation the iron is oxidized and reduced in order to increase its catalytic properties.Then COO is produced and continuously removed by freezing out in a mixture of dry ice and alcohol.

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  1. I am one of the developer for IsoMemo---an initiative to connect isotope database across diverse disciplines such as ecology, environmental, archaeology and life sciences. Current Institution. Christian-Albrechts-Universität zu Kiel CAU. The Leibniz Laboratory for Radiometric Dating and Stable Isotope Research. Kiel.… continue reading »


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    Nov 28, 2015. Radiocarbon dating. Carbon has three naturally occurring isotopes, i.e. carbon atoms that have equal numbers of protons but different numbers of neutrons and thus different masses. The most abundant isotope is 12C making up approximately 98.89 % of all carbon in nature. The abundance of the stable.… continue reading »


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    Nov 28, 2015. Christian-Albrechts-Universität zu Kiel · Mathematisch-Naturwissenschaftliche Fakultät · Leibniz-Labor · Leibniz-Laboratory for Radiometric Dating and Stable Isotope Research · AMS 14C Lab · Basic principles of 14C AMS. ≡. Leibniz-Laboratory.… continue reading »


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    May 30, 2017. Please contact us before sending these samples. * Sample size of dry peat; more material is required if the mineral content is high or the peat is decomposed. ** Sample size depending on the organic content. The precision of radiocarbon dates for recent samples younger than 2000 years of “normal”.… continue reading »


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    The precision of radiocarbon dates for recent samples younger than 2000 years is better than 0.4% which equals +/-35 years for the 1-σ statistical uncertainty of the measured age. The uncertainty changes according to the age of the sample and will be larger for older material. Consultation with the Leibniz-Laboratory.… continue reading »


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