VARIATION OF ION-TRANSPORT PROPERTIES UNDER ELECTRIC-FIELD WITH MASS RATIOS

A set of systematic calculations for the ion transport properties unde r repulsive potentials in the form A.r(-n) for n = 4, 8 and infinity h as been performed to understand the effects of the ion-neutral mass ra tio. Obtained data for three mass ratios 1/1, 1/4 and 4/1 at each of 1 00 and 300K over a wide range of the reduced electric field show compl ex but consistent mass ratio dependences. The effects of mass ratios o n the variation of ion mobilities are discussed in relation with the c hange of mean collision frequencies.