Shell-differential electron capture in heavy ion-atom collisions at moderate collision velocities

Electron capture cross sections have been estimated from the projectile incoming inner shell vacancy dependent K and L x-ray emission cross sections of the projectile in 69.2 MeV/u Biq+-Au collisions (77≤ q ≤ 82) measured at the GSI heavy ion synchrotron SIS18. These estimations proved to be in agreement with the values deduced from the charge exchange cross sections obtained from the target thickness dependent charge state distribution of the emerging ions. The Eikonal approximation indicates trends in consonance with the measured values and predictions according to Schlachter et al. are in reasonable agreement too.