Hannover 2013 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 9: Accelerator Mass Spectrometry and Applications II

MS 9.1: Hauptvortrag

Donnerstag, 21. März 2013, 11:00–11:30, F 442

Extending the measuring capabilities of AMS — •Robin Golser, Oliver Forstner, Walter Kutschera, Martin Martschini, Alfred Priller, and Stephan Winkler — Universität Wien, Fakultät für Physik, Isotopenforschung, Währinger Str. 17, 1090 Wien

Accelerator Mass Spectrometry (AMS) is the most sensitive method to measure long-lived isotopic species. Although a certain level of maturity and routine has been reached since the beginnings in the 1980ies the strive for smaller sample size, for better sensitivity, for higher accuracy, for more isotopes in a larger mass range continues to be strong. I will focus on the technical side of four recent methodological developments to extend the limits of AMS pursued at the Vienna Environmental Research Accelerator (VERA): microgram samples for C-14 analysis, e.g. in [1], one liter ocean water samples for U-236 analysis, e.g. in [2], searching for super heavy nuclides around A=300, e.g. in [3], and separating isobars by laser interaction, e.g. in [4].

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[1] O. Bergmann et al. Neuron 74 (2012) 634.

[2] S. Winkler et al., EPSL 359-360 (2012) 124.

[3] F. Dellinger et al., Phys. Rev. C 83 (2011) 015801.

[4] M. Martschini et al., Int. J. Mass Spectr. 315 (2012) 55.