Understanding the origin of the elements comprising our universe as well as the environments in which they are synthesized is of paramount importance to the nuclear physics community. Most of the isotopes of elements heavier than iron are created via the slow (s-process) and rapid (r-process) neutron-capture processes, and thus accurate determination of the relevant neutron-capture cross sections is important. Two such isotopes, important for s-process nucleosynthesis, are 63,65Cu where, until recently, large discrepancies between measured cross sections have introduced substantial uncertainties in s-process nucleosynthesis yields. In this talk a recent measurement of 65Cu(n,g) using the Detector for Advanced Neutron Capture Experiments (DANCE) will be discussed. The impact of this work, coupled with two additional results from other recent DANCE measurements of 63Ni and 63Cu, was studied using s-process nucleosynthesis models. The results of that investigation will also be presented.

Measurement of neutron-capture cross sections of copper isotopes with DANCE for constraining s-process nucleosynthesis

2019 Fall National Meeting

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