Single- and double-electron transfer reactions of ground and metastable state Ar2+ ions

Authors

George C. Shields, Bucknell UniversityFollow
T. F. Moran

Publication Date

10-1983

Description

Electron transfer cross sections have been measured for reactions of Ar²⁺ ions with Ar, N₂, O₂, CO₂, CH₄ and C₂H₆. Time-of-flight techniques have been used to measure both fast neutral Ar⁰ and fast Ar⁺ products from single- and double-electron transfer processes involving Ar²⁺ ions with 4.0 to 7.0 keV impact energies. Incident Ar²⁺ ions have produced by controlled electron impact ionisation of argon atoms. Reactions have been examined as a function of ionising electron energy and cross sections determined for ground state Ar²⁺(³P) ions. Charge transfer cross sections have been determined to be in the range of 3*10^-16 cm² for the systems examined. Double-electron transfer cross sections are the same order of magnitude as those measured for the corresponding single-electron transfer reactions. The state distribution of the reactant ion beam has been estimated and electron transfer cross sections obtained for single- and double-electron transfer reactions of metastable Ar²⁺ions. The magnitudes of electron transfer cross sections in individual systems are similar for both ground and metastable state Ar²⁺ reactions.

Journal

Journal of Physics B: Atomic and Molecular Physics

Volume

16

Issue

19

First Page

3591

Last Page

3601

Department

Chemistry

Link to Published Version

dx.doi.org/10.1088/0022-3700/16/19/017