Freiburg 2024 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 7: Accelerator Mass Spectrometry III
MS 7.5: Vortrag
Donnerstag, 14. März 2024, 12:15–12:30, HS 3042
Developments towards ion cooler assisted 90Sr measurements at CologneAMS — •Oscar Marchhart1,2,3, Markus Schiffer3, Elisa Linnartz3, Martin Martschini1, Melisa Maslo4, Gereon Hackenberg3, Timm-Florian Pabst3, Peter Steier1, Erik Strub4, Tibor Dunai5, Dennis Mücher3, and Robin Golser1 — 1University of Vienna, Faculty of Physics - Isotope Physics, Vienna, Austria — 2University of Vienna, Faculty of Physics & Vienna Doctoral School in Physics, Vienna, Austria — 3University of Cologne, Institute for Nuclear Physics, Cologne, Germany — 4University of Cologne, Division of Nuclear Chemistry, Cologne, Germany — 5University of Cologne, Institute of Geology and Mineralogy, Cologne, Germany
The fission product 90Sr (T1/2 = 28.90 a) is a radiotoxic trace nuclide produced with high yield in the nuclear fuel cycle and weapons tests. State-of-the-art radiometric measurements are time-consuming and cumbersome, hence, accelerator mass spectrometry (AMS) has the potential to be a fast and highly sensitive alternative, especially for large quantities.
In a collaboration between the University of Vienna and University of Cologne, a new advanced ion cooler for ion beams with high emittance, e.g. SrF3−, was designed and built. Performance tests, including residence time measurements, have been conducted at a dedicated test bench in Vienna. Simultaneously, a simple and fast chemical preparation for Sr in soil samples for large amounts of samples is worked on. The performance tests and sample preparation will be presented.
Keywords: AMS; Ion cooler; 90Sr; CologneAMS