Electron capture in K+ ion collisions with Na(4d)

Abstract

Close-coupling calculations have been performed for the K++Na(4d) system for laboratory energies in the range 0.3-3.5 keV. Total cross sections for electron capture from the different magnetic substates of the 4d manifold are compared with existing experimental data. The predicted dependence of the capture cross section on the magnetic quantum number of the initial state is interpreted in terms of the probability of finding the 4d electron close to the collision plane. We also comment on the difference between choosing the quantization axis to be parallel or perpendicular to the beam axis.