α-decaying statesO18,Ne20andNe22inO18beam induced reactions

Abstract

The three reactions {sup 12}C({sup 18}O,{sup 14}C+{alpha}){sup 12}C, {sup 12}C({sup 18}O,{sup 16}O+{alpha}){sup 10}Be, and {sup 12}C({sup 18}O,{sup 18}O+{alpha}){sup 8}Be have been used to investigate {alpha}-decaying states in the nuclei {sup 18}O, {sup 20}Ne, and {sup 22}Ne 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 {sup 18}O, {sup 20}Ne, and {sup 22}Ne 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 {sup 18}O, {sup 14}C core + {alpha}, cluster bands, that are the analog of those in {sup 20}Ne have been identified.