Transport properties of Na+ ions in Kr gas

Abstract

The transverse-diffusion coefficients for Na+ ions drifting in Kr gas have been experimentally measured with estimated accuracies of better than 3% at E/N values ranging from 5 to 500 Td (1 Td=10-21 V m2) at about 303 K. In addition, elaborate calculations of the transport properties for the Na+-Kr system have been made by using Monte Carlo simulations (MCSs) and the generalized Einstein-relation techniques. The experimental results are compared with values obtained from MCSs using the interaction potential of Koutselos, Mason, and Viehland [J. Chem. Phys. 93, 7125 (1990)] as input. Agreement within 3% for the entire range of E/N is observed in the comparisons. MCS-calculated values of longitudinal-diffusion coefficients are also compared with those determined experimentally by Thackston et al. [J. Chem. Phys. 73, 2012 (1980)]. © 1993 The American Physical Society.