The impact of individual nuclear masses on -process abundances
M. Mumpower, R. Surman, D. L. Fang, M. Beard, P. Möller, T. Kawano, A. Aprahamian
Published Phys. Rev. C 92 035807 (2015)
We have performed for the first time a comprehensive study of the sensitivity of -process nucleosynthesis to individual nuclear masses across the chart of nuclides. Using the latest version (2012) of the Finite-Range Droplet Model, we consider mass variations of MeV and propagate each mass change to all affected quantities, including -values, reaction rates, and branching ratios. We find such mass variations can result in up to an order of magnitude local change in the final abundance pattern produced in an -process simulation. We identify key nuclei whose masses have a substantial impact on abundance predictions for hot, cold, and neutron star merger -process scenarios and could be measured at future radioactive beam facilities.