Projectile 1s electron loss in collision systems F8++C and O7++C

In this paper, we present our study on the K shell electron loss of hydrogen-like O and F ions by C atom in the impact energy range 20 MeV to 100 -MeV. The PWBA calculations for electron loss neglecting screening by the target electrons are in good agreement with the measured cross-sections at high impact energy. Large deviations are seen in the measured loss cross-sections at intermediate impact energy and this is attributed to capture ionization which is important in nearly symmetric collision systems. (orig.)