Astrophysical Reaction Rates for Charged-Particle Induced Reactions on Proton-Rich Nuclides

Abstract

Astrophysical reaction rates for reactions with proton-rich isotopes of Ne to Bi from stability to the proton dripline were calculated with an updated version of the SMARAGD statistical model (Hauser-Feshbach) code. Here, the focus was on reactions with protons or $\alpha$ particles as required for nucleosynthesis in proton-rich matter. For completeness, also neutron-induced reactions are provided for the same set of targets. Some comments on dependencies of rates on various nuclear properties and on the appropriate way to compare to experiments are given. The new rate set for charged-particle induced reactions provides a better description of experimental data than previously widely used rates, especially for reactions involving $\alpha$ particles.

Comments: v2: expanded discussion, typos fixed; submitted to Europ. J. Phys A, Topical Issue "About Stars and Nuclei: Honoring the Legacy of Roberto Gallino"; 19 pages, 14 figures