Computed cross sections for electron transfer in Ba⁺ + Ba⁺ collisions

Authors

Stanley J. Sramek, University of Nebraska - Lincoln
J.H. Macek, University of Nebraska - Lincoln
Gordon A. Gallup, UNLFollow

Date of this Version

October 1980

Comments

Published by American Physical Society. Phys. Rev. A 22, 1467 (1980) http://pra.aps.org. Copyright © 1980 American Physical Society. Permission to use.

Abstract

Cross sections have been computed for the electron-transfer process Ba⁺+Ba⁺→Ba+Ba⁺⁺, for collision energies ranging from 25 to 500 keV. The straight-line classical-trajectory method has been used, with basis functions obtained by the multiconfiguration valence-bond method. Several numerical procedures applicable to future treatments of similar large systems were developed. The maximum cross-section value is found to be around 27π a₀² (2.4 × 10^-15 cm²), and occurs near collision energy 500 keV. The system's transient behavior has also been studied in detail during the collision, and it has been found that most electron-transfer events involve migration of the electron across internuclear distances considerably larger than the ionic diameter.