REACTIONS OF KR-2(+) WITH VARIOUS NEUTRALS

Earlier studies performed by Shul and co-workers [R.J. Schul, B.L. Ups chulte, R. Pasarella, R.G. Keesee and A.W. Castleman, Jr., J. Chem. Ph ys., 91 (1987) 2557; R.J. Schul, R. Pasarella, B.L. Upschulte, R.G. Ke esee and A.W. Castleman, Jr., J. Chem. Phys., 86 (1987) 4446] reportin g room temperature data on 14 reactions of Kr-2(+) have been extended by investigating the energy dependences of the overall rate coefficien ts and the branching ratios of Kr-2(+) reactions with 11 neutral react ants using a selected ion flow drift tube. Switching is the main react ion channel in parallel with charge transfer in many of the reactions investigated. The charge transfer observed in these reactions is discu ssed using a Franck-Condon model, due to Bearman et al. [G.H. Bearman, J.D. Earl, R.J. Pieper, H.H. Harris and J.J. Leventhal, Phys. Rev. A, 13 (1976) 1734]. The binding energies obtained for KrCO+ and KrCO2+ a re (1.07 +/- 0.08) eV and (0.82 +/- 0.03) eV respectively and that obt ained for (CO2)(2)(+) is (0.65+/-0.03)eV. The reduced mobility of Kr-2 (+) in He in the range 10 Td less than or equal to E/N less than or eq ual to 150 Td is also reported.