Mainz 2026 – scientific programme
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MS: Fachverband Massenspektrometrie
MS 5: Poster
MS 5.4: Poster
Wednesday, March 4, 2026, 17:00–19:00, Philo 1. OG
Towards 53Mn measurements with ALIS at CologneAMS — •Timm-Florian Pabst1, Markus Schiffer1,2, Derin Schmidt1, Natasha Kalanke3, Stefan Heinze1, and Dennis Mücher1 — 1University of Cologne, Institute of Nuclear Physics, Cologne, Germany — 2University of Cologne, Department of Prehistoric Archaeology, Laboratory of Isotope Archaeology — 3Department of Physics and Astronomy, Botswana International University of Science and Technology
The mesaurement of 53Mn contents has a variety of applications. Ranging from astrophysics and meteorites to geosince where 53Mn could extend the look in the past in burrial and exposure dating. For a long time, 53Mn measurements were restricted to AMS facilities powered by rather large tandem accelerators of at least 10 MV terminal voltage. But as it is the case for a range of other radioisotopes the high isobaric suppression by laser photo detachement might improve the chalenging Suppression of 53Cr.
We will be reporting on recent updates on the ALIS setup at CologneAMS regarding the development of 53Mn measurements. This includes putting into service a new 940 nm, 20 W CW laser and optimizations for manganese ion beams as well as the new lasers transport through the ion cooler. Additionally we will show first insights on the reduction of 53Cr in our setup as well as the seperation of 53Mn and its isobar using the ALIS setup in combination with the 6 MV tandetron.
Keywords: Manganese-53; ALIS; Ioncooler; AMS; Geology