August 30, 2021 to September 3, 2021
University of Innsbruck
Europe/Zurich timezone

【338】Determination of 135Cs and 137Cs by Accelerator Mass Spectrometry

Sep 1, 2021, 6:45 PM
15m
Room B

Room B

Talk Nuclear, Particle- and Astrophysics (FAKT - TASK) Nuclear, Particle- & Astrophysics

Speaker

Alexander Wieser (University of Vienna)

Description

The radionuclides 135Cs and 137Cs are present in the environment with an isotopic ratio 135,137Cs/Cs ranging below 10-10. The isotopic ratio 135Cs/137Cs can be used for source assessment of anthropogenic cesium input into the environment and finds applications in geology, nuclear forensics and oceanography. The combination of low concentration, low beta-decay energy and long half-life prevents the determination of 135Cs via radiometric methods with the demanded sensitivity. Therefore, we established a measurement procedure for cesium by Accelerator Mass Spectrometry at VERA. First results on isobar suppression, abundance sensitivity and 135Cs/137Cs ratios of environmental samples will be presented.

Primary author

Alexander Wieser (University of Vienna)

Co-authors

Johannes Lachner (University of Vienna) Martin Martschini (Universität Wien) Alfred Priller Peter Steier (University of Vienna, Faculty of Physics - Isotope Physics) Mr Dorian Zok (Gottfried Wilhelm Leibniz Universität Hannover - Institut für Radioökologie und Strahlenschutz ) Robin Golser (University of Vienna, Faculty of Physics - Isotope Physics)

Presentation materials