THERMAL-ENERGY CHARGE-TRANSFER OF AR+ WITH H2O - INTERNAL AND KINETIC-ENERGY OF THE PRODUCT H2O+

The reaction of Ar+ with H2O has been investigated at near-thermal energy. The product ions H2O+ and ArH+ account for 90 and 10% of the total reaction rate, respectively. Kinetic energy measurements and emission spectroscopy of the H2O+ product ions are reported. It is concluded that at least 60% of H2O+ ions are in the X̃ state with ≈2.4 eV vibrational energy while up to 40% are in the à state with a mean vibrational energy of 1.4 eV; the à state vibrational distribution has been determined. It is shown that both H2O+ states are populated via an energetically non-resonant" charge transfer process. © 1979."