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MS: Fachverband Massenspektrometrie

MS 4: Accelerator Mass Spectrometry and Applications

MS 4.5: Vortrag

Mittwoch, 13. März 2019, 11:30–11:45, U A-Esch 2

First tests of the new 135^∘ gas-filled magnet at the Cologne 10 MV AMS-System — •Susan Herb, Richard Spanier, Markus Schiffer, Heinze Stefan, Claus Müller-Gatermann, Gereon Hackenberg, Lena Bussmann, Alexander Stolz, and Alfred Dewald — Institut für Kernphysik, Universität zu Köln

The AMS setup at the Cologne 10 MV Tandem Accelerator is dedicated to measure isotopic ratios of medium mass nuclei. After the first measurements of ⁵³Mn, measurements of ⁶⁰Fe and ⁶³Ni are possible with the new 135^∘ gas-filled magnet. The isotope ⁶⁰Fe is of great importance for nuclear astrophysics and ⁶³Ni for nuclear waste management. Test measurements of the new gas-filled magnet were performed with stable Fe and Ni beams. In order to avoid high energy loss in the entrance window of the magnet, the mylar-foil was replaced by a Si₃N₄ window. In addition a new 5-anode gas-detector was positioned after the magnet. A large 2cmx2cm Si₃N₄ foil is used at the entrance and x-slits allow to reduce scattered particles. We will present the first results on the isotope separation and transmission of the system.