Abstract
BHANDARI et al.1 and independently Perkins et al.2 have detected cosmic-ray-produced 38S in several precipitation samples. This paper reports on the first detection of cosmic-ray-produced radioactive 38S as atmospheric 38SO2. The use of this nuclide as a tracer for the in situ determination of SO2 oxidation rates is also discussed. 38S is produced by spallation of atmospheric argon and decays with a half life of 2.87 h by β−-emission to 38C1; 95% of the decays are accompanied by 1.88 MeV-γ-radiation, 5% undergo direct transition to the 38Cl ground state.
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ROEDEL, W., JUNKERMANN, W. & LEIDNER, L. Radioactive 38S in an atmospheric SO2 and SO2 oxidation rate measurement. Nature 268, 320–321 (1977). https://doi.org/10.1038/268320a0
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DOI: https://doi.org/10.1038/268320a0