Sample preparation takes place in a clean room laboratory to protect the respective sample from contamination. This is especially important for both isotope as well as trace element analysis.
There are a total of three mass spectrometers for the measurement of prepared samples: a thermal ionization mass spectrometer (TIMS) dedicated to osmium (Os) isotope ratio analysis, a high-resolution multi-collector mass spectrometer with inductively coupled plasms (HR-MC-ICP-MS) dedicated to the measurement of lead (Pb), strontium (Sr) and neodymium (Nd), and a quadrupole ICP mass spectrometer coupled with a laser ablation system (LA-Q-ICP-MS) for analysis of trace and ultra-trace elements.
X-Ray Fluorescence is a widely used technique for the analysis of major, minor and trace elements. The surface composition of a sample or an object can be determined non-invasively. This analysis technique is non-destructive and requires no chemical digestion. Metal objects, glassware, enamels, gemstones and other inorganic materials can be analyzed.
NAA is a commonly used method for the compositional analysis. The method is particularly well suited for the determination of trace elements in materials that are hard to solubilize like ceramics and rocks.
The measurement of 210Pb is carried out via the determination of the alpha-emitting daughter nuclide 210Po (t1/2 = 138.4 d) by alpha-spectrometry. An alpha-spectrometer, Octête Plus (Fa. Ortec), with eight ion-implanted silicon detectors is used for the measurements with very low background activity and an energy resolution of 20 keV full width at half maximum peak height (FWHM).
Untersuchung von An- und Dünnschliffen mit einem Auf- und Durchlichtmikroskop. Ein digitales Mikroskop ermöglicht auch die dreidimensionale Erfassung von Objekten.
Scanning Electron Microscope with variable pressure mode (VP). SEM is equipped with Bruker XFlash® silicon drift detector (SDD) for energy dispersive X-ray microanalyses (EDX).
We provide radiocarbon dating services on small sample sizes, using a MICADAS-type compact AMS spectrometer. All organic material and carbonates can be dated. The datable age span covers historic times back to 50.000 years.
Luminescence dating can be applied to fired or burnt objects. To determine the age of a sample, we use a Risø-Reader TL/OSL DA-20 with integrated Alpha- (241Am) and betasource (90Sr) to quantify the dose that the sample has aquired since the event to be dated. We use neutron activation analysis to determine the radioactivity of the environment and the sample itself.