SAMOP 2023 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 3: Mass Spectrometry Applications
MS 3.2: Vortrag
Mittwoch, 8. März 2023, 15:00–15:15, F128
Multi-element isotopic analysis of hot particles from Chornobyl — •Darcy van Eerten1, Manuel Raiwa1, Paul Hanemann1, Laura Leifermann1, Tobias Weissenborn1, Wolfgang Schulz1, Martin Weiß1, Danielle Ziva Shulaker2, Peter Boone2, David Willingham2, Keenan Thomas2, Brian Sammis2, Brett Isselhardt2, Mike Savina2, and Clemens Walther1 — 1Institut für Radioökologie und Strahlenschutz, Leibniz Universität Hannover, Herrenhäuser Str. 2, 30419 Hannover, Germany. — 2Chemical and Isotopic Signatures Group, Lawrence Livermore National Laboratory, Livermore, USA.
Nuclear materials that contaminate the environment present an ongoing challenge to characterize due to their small size and diverse morphology. The analysis of isotope ratios in actinides and fission products can provide determination of origin, age and environmental weathering of these materials. Resonance ionisation mass spectrometry (RIMS) utilizes selective laser ionization to target single elements and suppress the isobaric interferences typically found in mass spectrometry. Two specialized instruments were used to analyse single hot particles from Chornobyl: rL-SNMS at the IRS in Hannover, Germany, and LION at LLNL in Livermore, USA. Results from multiple particles are presented with interpretations of isotope ratios in U, Pu, Cs, Rb, Sr and Ba.