Preprints
https://doi.org/10.5194/gchron-2021-11
https://doi.org/10.5194/gchron-2021-11

  26 Apr 2021

26 Apr 2021

Review status: this preprint is currently under review for the journal GChron.

Technical Note: Noble gas extraction procedure and performance of the Cologne Helix MC Plus multi-collector noble gas mass spectrometer for cosmogenic neon isotope analysis

Benedikt Ritter, Andreas Vogt, and Tibor J. Dunai Benedikt Ritter et al.
  • University of Cologne, Institute of Geology and Mineralogy, Zülpicher Straße 49b, Köln 50674, Germany

Abstract. We established a new laboratory for noble gas mass spectrometry that is dedicated for the development and application to cosmogenic nuclides at the University of Cologne (Germany). At the core of the laboratory are a state-of-the-art high mass resolution multicollector Helix MCPlus (Thermo-Fisher) noble gas mass spectrometer and a novel custom-designed automated extraction line. The Mass-spectrometer is equipped with five combined Faraday Multiplier collectors, with 1012 Ω and 1013 Ω pre-amplifiers for faraday collectors. We describe the extraction line and the automized operation procedure for cosmogenic neon and the current performance of the experimental setup. Performance tests were conducted using gas of atmospheric isotopic composition (our primary standard gas); as well as CREU-1 intercomparison material, containing a mixture of neon of atmospheric and cosmogenic composition. We use the results from repeated analysis of CREU-1 to assess the performance of the current experimental setup at Cologne. The precision in determining the abundance of cosmogenic 21Ne is equal or better than those reported for other laboratories. The absolute value we obtain for the concentration of cosmogenic 21Ne in CREU is indistinguishable from the published value.

Benedikt Ritter et al.

Status: open (until 11 Jun 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Benedikt Ritter et al.

Benedikt Ritter et al.

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Short summary
We describe the design and performance of a new noble gas mass laboratory dedicated for the development and application to cosmogenic nuclides at the University of Cologne (Germany). At the core of the laboratory are a state-of-the-art high mass resolution multicollector Helix MCPlus (Thermo-Fisher) noble gas mass spectrometer and a novel custom-designed automated extraction line; including a laser-powered extraction furnace. Performance was tested with intercomparison (CREU-1) material.