The role of excited states in rp-process for sd shell nuclei

Abstract

We investigate the importance of proton capture on low-lying excited states that are thermally excited in hot stellar environments. In addition to the previously known case of ${}^{32}$Cl$(p,\gamma {)}^{33}$Ar we find several other sd-shell nuclei with large stellar enhancement factors. We discuss the uncertainty this introduces into rp-process nucleosynthesis.

Comments: year 2005, unpublished