Interaction of Fully Stripped, Hydrogenlike and Heliumlike C, N, O, Ne and Ar Ions with H and He Atoms and H2Molecules

Cross-sections for one-electron capture in collisions of C +Z ( Z = 4-6), N +Z ( Z = 5-7), O +Z ( Z = 6-8) and Ne +Z ( Z = 8-10) ions with atomic and molecular hydrogen, Ar +18 ions with H 2 molecules and C +6 , N +7 , O +8 , Ar +Z ( Z = 3-8) ions with helium atoms have been measured in the range of relative velocities of the colliding particles v = (1-13) × 10 7 cm s -1 . Populations of various electronic states of Ar +( Z -1) ions formed in the process of one-electron capture by Ar +Z ( Z = 3-7) ions from He atoms have also been measured. In the investigated velocity range there is a good agreement between the obtained experimental values of cross-sections for one-electron capture and the available close-coupling calculations. Theoretical estimations of cross sections have been made on the basis of Landau-Zener model and they agree well with experimental data.