Köln 2025 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 5: Poster

MS 5.4: Poster

Dienstag, 11. März 2025, 17:30–19:00, Foyer Physik

Ion-optical and optical measurements of the Anion Laser Isobar Separator - ALIS — •Derin Schmidt¹, Stefan Heinze¹, Oscar Marchhart^1,2,3, Dennis Mücher¹, and Markus Schiffer¹ — ¹University of Cologne, Institute for Nuclear Physics, Germany — ²University of Vienna, Faculty of Physics, Isotope Physics, Austria — ³University of Vienna, Vienna Doctoral School in Physics, Vienna, Austria

As the detection of trace amounts of certain nuclides via Accelera- tor Mass Spectrometry (AMS) is highly dependent on the suppression of isobars, the Anion Laser Isobar Separator (ALIS) was installed at the University of Cologne for element-selective photo-detachment and buffer-gas reactions. The ion-optical system of the ion source and the injector magnet was characterized by beam profile measurements, and the results were compared to simulations. The ion source efficiency was measured for ¹²C, ²⁷AlO, ⁸⁸SrF₃, and ³⁵Cl. An 18W continuous- wave 532 nm laser was installed, and transmission tests were conducted with the optical system to prepare for its future application in element- selective photo-detachment.

Keywords: Laser Isobar Separation; Ion-Optics; Laser-Optics