Julian Robertz
Werner Aeschbach
Niclas Mandaric
Argon Trap Trace Analysis, ArTTA, is a quantum optical measurement method. The ultra-high sensitivity is achieved by counting single atoms using laser cooling techniques such as a magneto-optical trap. With this high precision the tracer age of the rare isotope 39Ar is determined and used for research in environmental physics, especially water systems. The atmospheric concentration of 1:8.1*10-16 (this roughly equals the ratio of the area of a 1€ coin to the area of Germany) makes it inaccessible to conventional methods.
The focus of the ArTTA group lies on the further development and the application of the method. This involves gaining a fundamental understanding of the underlying quantum physics as well as the experimental implementation. In the next years the understanding of the generation of metastable atoms and further improvements of the laser cooling efficiency will be part of our research as well as expanding our capabilities to the radiokrypton isotopes (85Kr and 81Kr).
With our measured concentration being compared with a known atmospheric sample, the 39Ar tracer age can be calculated via the radioactive decay law with a half-life time of 269 years. The results give insights into the age of alpine glacier ice, ground, ocean, or lake water within a range of 50 to 1000 years. This enables gaining important information about the dynamics of these systems. Therefore, the ArTTA project at the Heidelberg University is a cooperation of the group of Markus Oberthaler from the Kirchhoff Institute for Physics and Werner Aeschbach from the Institute for Environmental Physics.
The ArTTA project is a joint project with the research group HydroTraP of Werner Aeschbach at the Institute of Environmental Physics in Heidelberg.
Projects and their specific collaborations
An overview with all current and past projects can be found on our project specific Database DABATTA.
Interested in doing some environmental projects, contact us below or via Werner Aeschbachs group.
We are dating single atoms. Your new passion could start with:
→ Then don’t hesitate to contact us to be soon dating your first atom. Best via: mailto:atta@matterwave.de
Alexander Junkermann
Phone: +49 6221 54 5174 (office)
Room: 02.317 Office
alexander.junkermann@kip.uni-heidelberg.de
Carl Vincent Kindermann
Phone: +49 6221 54 5174
Room: 02.317
carl_vincent.kindermann@kip.uni-heidelberg.de
Esther Nadine Kummetz
Phone: +49 6221 54 5174
Room: 02.317
esther_nadine.kummetz@kip.uni-heidelberg.de
Niclas Valentino Mandaric
Phone: +49 6221 54 5174
Room: 02.317
niclas_valentino.mandaric@kip.uni-heidelberg.de
Prof. Dr. Markus Oberthaler
Phone: +49 6221 54 5170
Room: 02.102
markus.oberthaler@kip.uni-heidelberg.de
