Detection of 135Cs & 137Cs in environmental samples by AMS

Alexander Wieser (Korresp. Autor*in), Johannes Lachner, Martin Martschini, Dorian Zok, Alfred Priller, Peter Steier, Robin Golser

Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed


The detection of low abundances of 135Cs in environmental samples is of significant interest in different fields of environmental sciences, especially in combination with its shorter-lived sister isotope 137Cs. The method of Ion–Laser InterAction Mass Spectrometry (ILIAMS) for barium separation at the Vienna Environmental Research Accelerator (VERA) was investigated and further improved for low abundance cesium detection. The difluorides BaF2− and CsF2− differ in their electron detachment energies and make isobar suppression with ILIAMS by more than 7 orders of magnitude possible. By this method, samples with ratios down to the order of 135,137Cs/133Cs ≈10−11 are measurable and the 135Cs/137Cs ratios of first environmental samples were determined by AMS.
Seiten (von - bis)36-40
FachzeitschriftNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
PublikationsstatusVeröffentlicht - Mai 2023

ÖFOS 2012

  • 103014 Kernphysik
  • 103012 Hochenergiephysik