Multiple ionization of noble gases by fully stripped ions

Absolute partial-ionization cross sections have been determined for inelastic interactions involving fully stripped atomic projectiles and noble-gas atoms. For helium bombarded with stripped H, He, Li, B, C, and O at reduced energies of 1.44 and 2.3 MeV/amu, the ratio of cross sections for double and single ionization R=σi2σi1 shows a strong dependence on the incident projectile charge. Furthermore, striking differences between results for …