Charge transfer of keV O⁺ ions with CO and H₂O

B. G. Lindsay, R. Rejoub, D. R. Sieglaff, and R. F. Stebbings

J. Phys. B: At. Mol. Opt. Phys. 34, 2159-2165 (2001)

We report measurements of the absolute differential cross sections for charge-transfer scattering of 0.5-5-keV O⁺ ions by CO and H₂O at scattering angles between 0.04º and 2.9º in the laboratory frame. Estimated total charge transfer cross sections, derived from these measurements, are compared with previously published data. Cross sections for both O⁺(⁴S) ground state and O⁺(²D, ²P) metastable ions are presented. In contrast to the results of several previous studies the internal energy of the O⁺ ions is found to have little effect on either the angular dependence of the differential cross sections or on the total cross sections.