New measurement of ⁴He and proton decays from resonant states in ¹⁹Ne

A Li-6(O-16,Ne-19*)H-3 multi-nucleon transfer-reaction experiment was performed to populate the highly excited states in Ne. The subsequent decay particles, He-4 or protons from the Ne-19 resonant states, were detected in coincidence with the recoil H-3. The excitation-energy spectra of( 19)Ne were reconstructed using the detected proton or He and the deduced F-18 or (15O) data, respectively. A broad resonance at about 7.85 MeV (1/2(+)) was observed, with partial decay widths different from the previously reported values, which may have a significant impact on the destruction of F-18 in astrophysical processes. Several resonances up to very high excitation energies have been identified with a large alpha-clustering strength, which confirm the formation of the cluster structure with a one-hole configuration in light nuclei and encourage further systematic studies of the cluster structure in Ne-19.