SAMOP 2021 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 7: Accelerator Mass Spectrometry I
MS 7.2: Vortrag
Donnerstag, 23. September 2021, 11:15–11:30, H3
Integration of the EA-IRMS system to the CologneAMS facility — •Martina Anna Gwozdz, Gereon Hackenberg, Stefan Heinze, Susan Herb, Timm-Florian Pabst, Markus Schiffer, Alexander Stolz, and Alfred Dewald — Institute for Nuclear Physics, University of Cologne, Germany
Recently a new elemental analyser (EA) and an isotope ratio mass spectrometer (IRMS) for stable isotopes have been installed at the 6MV AMS device of CologneAMS. In addition to the 14C content of a sample this will provide precise values of stable isotopic ratios like δ13C or δ15N.
A direct connection to the existing gas interface as well as the implementation of the new devices into the control software of the existing AMS system were realized. In this way it is possible to measure quasi-simultaneously the 14C concentration with the 6MV AMS system and the δ13C value with the IRMS device.
We will also investigate whether this new set-up will enable improved fractionation correction which are used in the 14C data evaluation as proposed by Ravi Prasad et al. [1].
[1] G.V. Ravi Prasad et al., 2019, δ13C correction to AMS data: Values derived from AMS vs IRMS values., Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, v. 455, p.244-249