Mobility and Diffusion. II. Dependence on Experimental Variables and Interaction Potential for Alkali Ions in Rare Gases

Abstract

Formulae derived in Part I are used here to calculate mobility and diffusion coefficients for K + ions in helium and in neon gases. The formulae are evaluated by inverting truncated matrices, and the effect of using successively larger matrices is investigated numerically. It is found that close agreement with the measurement .of ion mobilities can be obtained over a significant range of values of E/no .and this determines the potential parameters of an assumed 12-6-4 potential within narrow limits. Diffusion coefficients are calculated from the potential so obtained. The sensitivity of the mobility to variations in potential parameters is discussed and some observations of interest for future experiments are made.