TY - JOUR

T1 - Detection of 135Cs & 137Cs in environmental samples by AMS

AU - Wieser, Alexander

AU - Lachner, Johannes

AU - Martschini, Martin

AU - Zok, Dorian

AU - Priller, Alfred

AU - Steier, Peter

AU - Golser, Robin

N1 - Funding Information: We thank Armin Shayeghi (University of Vienna) for calculating the vertical detachment energies for the difluoride molecules and Sabrina Beutner (Helmholtz-Zentrum Dresden-Rossendorf) for determining the stable Cs concentration in the 137Cs reference solution. Part of this work was funded by the RADIATE project under the Grant Agreement 824096 from the EU Research and Innovation program HORIZON 2020. The authors acknowledge financial support of the ILIAMS research activities by “Investitionsprojekte” of the University of Vienna, Austria. Funding Information: Part of this work was funded by the RADIATE project under the Grant Agreement 824096 from the EU Research and Innovation program HORIZON 2020. The authors acknowledge financial support of the ILIAMS research activities by “Investitionsprojekte” of the University of Vienna, Austria .

PY - 2023/5

Y1 - 2023/5

N2 - 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.

AB - 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.

KW - Cs

KW - Accelerator mass spectrometry

KW - ILIAMS

KW - Ion cooler

KW - Laser photodetachment

UR - http://www.scopus.com/inward/record.url?scp=85149373491&partnerID=8YFLogxK

U2 - 10.1016/j.nimb.2023.02.013

DO - 10.1016/j.nimb.2023.02.013

M3 - Article

AN - SCOPUS:85149373491

VL - 538

SP - 36

EP - 40

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

SN - 0168-583X

ER -