出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The 18Ne(α,p)21Na reaction plays a crucial role in the (α,p) process, which leads to the rapid
proton capture process in X-ray bursts. The reaction rate depends upon properties of 22Mg levels
above the α threshold at 8.14 MeV. Despite recent studies of these levels, only the excitation
energies are known for most with no constraints on the spins. We have studied the 24Mg(p,t)22Mg
reaction at the Oak Ridge National Laboratory (ORNL) Holifield Radioactive Ion Beam Facility
(HRIBF), and by measuring the angular distributions of outgoing tritons, we provide the first
experimental constraints on the spins of astrophysically-important 18Ne(α,p)21Na resonances.
