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.
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)
