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VERA Seminar

Trace analyses at the single particle level with Atom Trap Trace Analysis for 39Ar

Markus Oberthaler, Kirchhoff Institut für Physik, Universität Heidelberg

Atom optics has found many applications in different fields of physics. In the context of environmental physics the method of Atom Trap Trace Analysis (ATTA) has opened a new level of dating of water in the regime of very old water (millions of years) with 81Kr and recent water of the last 1000 years with 39Ar. The latter is the topic of this seminar revealing the challenges and experimental solutions to work with 39Ar concentrations in Ar as small as 1:1016. After the detailed discussion of the experimental techniques I will present the first results on dating of water with this method [1] and discuss the potential for samples as small as 1 liter. Being able to date such small samples we will open up a route for detecting the age distribution of the oceans.

[1] F. Ritterbusch et al., Groundwater dating with Atom Trap Trace analysis of 39Ar, Geophys. Res. Lett. 41 (2014) 6758, doi:10.1002/2014GL061120


Donnerstag, 26.11.2015    16:30 Uhr

Währinger Str. 17 (Kavalierstrakt, Zugang durch den Hof)
1090 Wien


Universität Wien
Isotopenforschung und Kernphysik

Währinger Str. 17
1090 Wien

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