Abstract
In the last fifteen years it has become possible to make measurements of the mobility of trace amounts of ions through a neutral gas with an accuracy of 1–2% over a wide range of E/N, the ratio of electric field strength to the neutral gas number density. Only recently, however, has theory developed sufficiently to permit attempts to obtain accurate information about ion-neutral potentials from analysis of such measurements. We present a scheme that allows the theoretical expressions to be inverted, so that the direct determination of ion-neutral potentials from gaseous ion mobility measurements becomes feasible with good accuracy (5% or better) over a wide range of separation distances. The accuracy of the inversion scheme is tested using simulated data for Li+ in He.
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