Dissociation of 15-MeV/nucleonNe20in collisions withAu197: Direct reactions leading to particle-emitting states

Energy and angular correlations between $\alpha$ particles and quasielastic projectilelike fragments produced in the ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$ + ${}_{}{}^{197}{}_{}{}^{}\mathrm{Au}$ reaction at 290 MeV show that the $\alpha$ particles are sequentially emitted from long-living states of primary fragments populated in direct reactions such as inelastic scattering and few-nucleon transfer. An analysis of the energy-integrated angular correlation leaves no notable cross section for a direct breakup or uncorrelated particle emission.