Impact of the ~(26m)Al(p, γ) Reaction to Galactic ~(26)AI Yield

摘要

Astrophysical observables that are directly linked to nuclear physics inputs provide critical and stringent constraints on nucleosynthetic models. As ~(26)A1 was the first specific radioactivity observed in the Galaxy, its origin has fascinated the nuclear astrophysics community for nearly forty years. Despite extensive research, the precise origins of ~(26)A1 remain elusive. At present, the sum of all putative stellar contributions generally overestimates the ~(26)A1 mass in the interstellar medium. Among the many reactions that influence the yield of ~(26)A1, radiative proton capture on its isomer ~(26m)Al is one of the least constrained reactions by experimental data. To this end, we developed a ~(26)A1 isomeric beam and performed proton elastic scattering to search for low-spin states in ~(27)Si. The experimental method and the preliminary results of this on-going study will be presented.