Abstract
Monte Carlo simulations are preformed to calculate ion transport parameters. Results are presented for the calculated reduced mobilities, K 0 , and longitudinal, D L , and transverse, D T , diffusion coefficients, for Xe+ ions in gaseous Xe-Ne mixtures, at atmospheric pressures, for Ne concentrations between 1 and 10%, and reduced electric field strengths, E/N, from about 5 to 500 Td, corresponding to values of E/p, from about 1.66 to 166 V cm−1 Torr−1 at 293 K. Reduced mobility, K 0 , peaks at about 50 Td with values of about 0.50 cm2V−1s−1 and increases slightly with the Ne concentration. The diffusion coefficients remain approximately constant and equal to 0.013 or 0.014 cm2s−1 for E/p values up to about 100 Td. The Monte Carlo simulations use a set of integral and differential elastic collision cross sections for Xe+ ions with neutral Xe and Ne atoms. Integral and differential elastic collision cross-sections for Xe+ ions with neutral Ne atoms are also calculated, and reported for center-of-mass energies in the 1 meV to 10 eV range, using a Tang and Toennies ion-atom interaction potential model to describe ab initio spectroscopic data for the Xe+-Ne molecular ion, and the phase shifts are calculated by the JWKB approximation.
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