Cesium Resonant Total Charge-Transfer Cross Section and Oscillatory Structure

A more detailed measurement and calculation are reported for the Cs⁺ + Cs charge-transfer cross section which contains continuous uniform oscillatory structure. Ten oscillation maxima are experimentally observed in the energy range from 0.6 to 21 keV. The oscillations are regular with inverse velocity and appear to show two superimposed oscillation frequencies. Calculations suggest that this may be due to the combined effect of a maximum in the interaction potential difference and of a large repulsive electron core, each generating a separate oscillation. It is shown that there is a very wide range of different potentials which could explain the oscillations.