A direct measurement of the 19Ne(p,γ)20Na reaction

The 19Ne(p,γ)20Na reaction may be of considerable influence for the reaction flow between the CNO and NeNa mass region in high temperature hydrogen burning conditions. The proposed low energy resonance at 0.447 MeV has been measured in inverse kinematics with the Louvain‐la‐Neuve 19Ne beam, using novel activation techniques. An upper limit to the resonance strength has been determined and the implications for the spin assignment of the 2.646 MeV state in 20Na as well as for the stellar reaction rate are discussed.