Abstract
THERE is a definite correlation1,2 between abundances and neutron capture cross-sections of a certain class of heavy nuclei, that is, of nuclei above the iron abundance peak. This correlation demonstrates that these nuclei must have been formed in a neutron capture process with a time scale slow compared with β-decay times (the s-process).
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ZEH, H. Evidence for the Existence of Heavy Nuclei prior to the s-Process. Nature 225, 361–362 (1970). https://doi.org/10.1038/225361a0
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DOI: https://doi.org/10.1038/225361a0
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