Nuclear reactions of astrophysical interest with radioactive beams

The ARENAS3 facility, coupling the two cyclotrons of Louvain-la-Neuve, is intensively been used over the past years for cross-section measurements of nuclear reactions of astrophysical interest. We will describe the characteristics of the available beams and the experiments going on using these beams. The 19Ne(p,γ)20Na reaction, of considerable importance for the reaction flow between the CNO and the NeNa mass region in high-temperature hydrogen burning conditions, will be discussed in particular. The proposed low-energy resonance at 0.447 MeV has been measured in inverse kinematics using novel activation techniques. An upper limit (90% C.L.) of 18 meV is obtained for the strength of this first particle-unbound state of 20Na together with preliminary values for the strength of the higher excited states. © 1995.
SCOPUS: ar.j
info:eu-repo/semantics/published