On the motion of an ion near a conducting wall: Correlation effects

Abstract

When a charged particle moves near a conducting wall, the induced current exerts a retarding force on the particle. The magnitude of this retarding force for a single ion has previously been computed. Here, the effects of ionic spatial correlations in an electrolyte solution are examined. We find that, at large distances from the wall, there is partial screening of the retarding force. At small distances, where the entire effect is largest, the previously considered single ion contribution is dominant.