⁸⁰Ge(d,pγ) Measurements at FRIB to Inform (n,γ) Reaction Rates in Weak r-process Nucleosynthesis

Individual (n,g) rates become important in the weak r-process near Z=26-34 and N=50 during freeze out from a hot r-process, and (n,g) rates for a handful of specific isotopes exhibit notable impacts on final r-process abundance patterns in sensitivity studies. One such nucleus is 80Ge which has an enhanced sensitivity and is in reach for reaction studies at FRIB. The 80Ge(d,pg) reaction will be measured at FRIB using GODDESS and the S800 at 45 MeV/u. This measurement aims to constrain spectroscopic factors for bound states including low-lying ½+-5/2+ doublet, in combination with a previous measurement at ~4 MeV/u, from which direct neutron capture cross sections will be determined. Additionally, the experiment will inform the compound nucleus (n,g) cross sections via the Surrogate Reaction Method.