Hannover 2020 – wissenschaftliches Programm

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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 Dunai21Institut 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.

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DPG-Physik > DPG-Verhandlungen > 2020 > Hannover