s-process nucleosynthesis of 142ⁿd: crisis of the classical model

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The recently improved information on the stellar neutron capture cross sections of neutron magic nuclei at N = 82, and in particular for 142ⁿd, turned out to represent a sensitive test for models of s-process nucleosynthesis. While these data were found to be incompatible with the classical approach, they provide significantly better agreement between the observed abundance distribution and the predictions of models for low mass AGB stars.