Theoretical study of charge transfer in He++H2 collisions in the milli-electron-volt regime.

Abstract

A theoretical investigation of charge transfer in ${\mathrm{He}}^{+}$+${\mathrm{H}}_{2}$ collisions in the ultralow-energy regime (meV) has been conducted. Molecular states have been obtained by using the multiconfiguration self-consistent-field method. The reaction rate constants have been calculated for dissociative and radiative charge-transfer processes. Agreement with the recent measurements of Schauer et al. [J. Chem. Phys. 91, 4593 (1989)] is satisfactory. The present study provides a theoretical rationale for the experimental findings by interpreting the detailed collision dynamics.