Impact parameter sensitive study of inner-shell atomic processes in the experimental storage ring

Abstract In this work, we present a pilot experiment in the experimental storage ring(ESR) at GSI devoted to impact parametersensitive studies of inner shell atomic processes for low-energy (heavy-) ion-atom collisions. The experiment was performed with bare and He-like xenonions (Xe 54+ , Xe 52+ ) colliding with neutral xenongas atoms, resulting in a symmetric collision system. This choice of the projectile charge states was made in order to compare the effect of a filled K-shell with the empty one. The projectile and target X-rays have been measured at different observation angles for all impact parametersas well as for the impact parameterrange of ∼35–70 fm.