Determination of and interaction potentials from gaseous ion mobility data

Abstract

Effective spherical interaction potentials for and are calculated from experimental gaseous ion mobility data by using the direct inversion method. The potentials obtained are used to obtain best-fit parameters of the Morse-Morse-Spline-Van der Waals (MMSV) potential model. The MMSV potentials were then employed to compute the mobility of ion in argon and krypton gases at 300 K. Results show that the MMSV potentials reproduce the experimental ion mobilities within their experimental accuracy.

Keywords:

• ion mobility
• kinetic theory
• inversion method
• ion-neutral interaction potential

Acknowledgements

We thank the research council of the Research Institute of Petroleum Industry (RIPI) and Research and Development of National Iranian Oil Company (NIOC) for their support of this work. The work of LAV was supported by the US National Science Foundation.