2008/05/15 by G. Raciti, G. Cardella, M. De Napoli +3 · 1 citation
Physics and Astronomy · #Nuclear physics research studies #Atomic and Molecular Physics #Advanced Chemical Physics Studies
paper · doi:10.1103/physrevlett.100.192503
openalex publication_date 2008/05/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
Two-proton decay from 18Ne excited states has been studied by complete kinematical reconstruction of the decay products. The 18Ne nucleus has been produced as a radioactive beam by 20Ne primary projectile fragmentation at 45 AMeV incident energy on a Be target. The 18Ne at 33 AMeV incident energy has been excited via Coulomb excitation on a natPb target. The obtained results unambiguously show that the 6.15 MeV 18Ne state two-proton decay proceeds through a 2He diproton resonance (31%) and democratic or virtual sequential decay (69%). The quoted branching ratio has been deduced from relative angle and momentum correlations of the emitted proton pairs.