a-decaying states 18O, 20Ne and 22Ne in 18O beam induced reactions

The three reactions C-12(O-18,C-14+alpha)C-12, C-12(O-18,O-16+alpha)Be-10, and C-12(O-18,O-18+alpha)Be-8 have been used to investigate alpha-decaying states in the nuclei O-18, Ne-20, and Ne-22 populated through inelastic scattering, 2p, and alpha transfer, respectively. The measurements were performed at a beam energy of 140 MeV, and two charged particle detector telescopes were used to detect the breakup of the projectile-like particle. States in O-18, Ne-20, and Ne-22 were observed in the excitation energy range from 7 to 22 MeV and angular correlation techniques were used to determine the spins of a number of these states. The data are interpreted in terms of the underlying cluster structure. In the case of the O-18, C-14 core + alpha, cluster bands, that are the analog of those in Ne-20 have been identified.