Mainz 2017 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 9: Accelerator Mass Spectrometry and Applications II
MS 9.5: Vortrag
Donnerstag, 9. März 2017, 15:30–15:45, RW 2
Current developments for AMS with medium mass isotopes in Garching — •Dominik Koll1, Peter Ludwig1, Christoph Busser1, Thomas Faestermann1, Jose Manuel Gomez Guzman1, Karin Hain2, Gunther Korschinek1, David Krieg1, and Manuel Lebert1 — 1Physik Department, Technische Universität München — 2Isotopenforschung und Kernphysik, Universität Wien
The AMS setup at the Maier-Leibnitz-Laboratory (MLL) in Garching features a 14 MV tandem accelerator and two dedicated beam lines for high-sensitivity measurements of isotopes in all mass ranges. Especially in the medium mass range (70 < A < 120), AMS sensitivity is often limited by isobaric and isotopic background with only small relative difference in Z and/or A. Recent developments at the MLL are aimed at improved sensitivity for isotopes such as 79Se, 93Zr, and 99Tc. Possible applications include the measurement of astrophysical cross-sections and environmental studies. In this talk, I will present the employed measurement techniques, specifically isobaric suppression via either a gas-filled magnet or passive absorber foils, and show the status of the current upgrade of the facility with a new silicon detector array.