Erlangen 2018 – scientific programme

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MS: Fachverband Massenspektrometrie

MS 9: Poster 1

MS 9.1: Poster

Thursday, March 8, 2018, 16:15–18:15, Redoutensaal

³⁶Cl, a Tool to Determine Atmospheric Neutrons in Aircrafts. — •Manuel Lebert, Christoph Busser, Thomas Faestermann, J. M. Gomez-Guzman, Angelina Kinast, Dominik Koll, Gunther Korschinek, and David Krieg — Technische Universität München, Garching, Germany

For ultra-sensitive AMS measurements, the initial radioisotope concentration must not be altered by transportation or storage.
To investigate if transportation by aircrafts leads to alteration, NaCl was transported by plane for around 90 hours and afterwards the ³⁶Cl (t_1/2=3·10⁵ a) concentration, produced by ³⁵Cl(n,γ)³⁶Cl reactions, was measured with AMS at the MLL in Munich. We found that these atmospheric neutrons had no effect on the samples.
In addition to that, the small concentration of ³⁶Cl/Cl of few 10⁻¹⁶ which we found in the samples will be studied further. The effect of high energy muons formed in the atmosphere and the emission of neutrons by spontaneous fission of uranium in the salt stock beside others will be considered. Further measurements of unprocessed NaCl from the same salt mine are going to be performed.