Freiburg 2024 – scientific programme

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MS: Fachverband Massenspektrometrie

MS 3: Accelerator Mass Spectrometry I

MS 3.6: Talk

Tuesday, March 12, 2024, 12:30–12:45, HS 3042

Sample detection efficiency and detection limits for the determination of actinides at the ETH Zürich MILEA system — •Habacuc Pérez Tribouillier and Marcus Christl — Laboratory of Ion Beam Physics, ETH Zürich

This study investigates the impact of varied matrix compositions, specifically iron and niobium content, on the detection efficiency of actinides (Pu, Am, and U) using the MILEA system at ETH Zürich. Our findings highlight the significance of optimal matrix composition, a factor intricately linked to the desired analysis duration. Larger matrices are observed to be advantageous for extended measurement times, particularly beneficial for lower-concentration samples. Additionally, we present our detection limits for Pu, Am, and U isotopes, and apply them for the determination of these isotopes on small-volume samples from the area near the Fukushima Nuclear Power Plant and the North Sea.

Keywords: Accelerator Mass Spectrometry; MILEA (Multi Isotope Low Energy AMS); Actinides