Nuclear Astrophysics Studies with an Isomeric ~(26)Al~m Beam

摘要

Nuclear isomers usually suggest unexpected nuclear structure properties and may play an important role in nuclear astrophysics. One of the most interesting cases is the 0~+(T_(1/2)=6.3 s) isomer in ~(26)Al, located just 228-keV above the ground state (5~+, T_(1/2)=740 ky). Proton captures on both, the ground state and the isomeric state, have a direct impact on the abundance of ~(26)Al in the Galaxy. We have developed a high-quality isomeric ~(26)Al~m beam via In-flight technique. By tunning the production energy we can favor the population of the isomeric state or the ground state in ~(26)Al. In this work, our efforts to develop and characterize an isomeric ~(26)Al~m beam are discussed as well as plans for experimental studies using this isomeric beam to constrain the destruction rate of Galactic ~(26)Al in relevant astrophysical environments.