RESONANT CHARGE-TRANSFER IN COLLISIONS BETWEEN POSITIVE-IONS

We present a numerical evaluation of the resonant charge-transfer cros s sections for ions of various positive charges. In the calculations w e introduce trajectory parameters through the expression for the insta ntaneous velocity of the projectile. Subsequent analysis reveals the e xistence of a natural scaling law by which cross sections of ion-ion c ollisions can be generated from the isoelectronic ion-atom charge-exch ange cross section. We obtain a set of simple formulas useful for a se miquantitative description of the features of such cross section curve s and we discuss the oscillatory structure of the cross sections.