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MS: Fachverband Massenspektrometrie

MS 10: Accelerator Mass Spectrometry and Applications II

MS 10.2: Vortrag

Donnerstag, 12. März 2020, 11:15–11:30, f128

Developments in the measurements of ¹⁴CO₂ samples at CologneAMS — •Alexander Stolz¹, Alfred Dewald¹, Stefan Heinze¹, Markus Schiffer¹, Susan Herb¹, Claus Müller-Gatermann¹, Gereon Hackenberg¹, Janet Rethemeyer², and Tibor Dunai² — ¹Institut für Kernphysik, Universität zu Köln — ²Institut für Geologie und Mineralogie, Universität zu Köln

In this contribution we report on the status of the actual ¹⁴CO₂ system at CologneAMS, which consists of a second HVE SO-110 B ion source, a gas injection system from Ionplus AG and a EuroVector EA3000 elemental analyzer (EA). Recently a new isoprime precisION IRMS and a second EA from elementar were installed for the study of fractionation effects of our AMS system. Additionally, a second gas system for CO₂ EA measurements was developed and built. The new development was aimed for the measurements of samples with high ¹⁴C concentrations (> 1e-11) by diluting the sample CO2 material with blank gas, in order to avoid contaminations of the equipment. We will report on the routine performance of gas measurements and discuss first results of test runs with the new system.