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Title: Transport properties of Rb+ ions in Ne and Ar gases
Authors: Tan, T.L. 
Ong, P.P. 
Zhou, Z.L.
Keywords: Drift tube
Ion mobility
Monte Carlo simulation
Transport properties
Issue Date: 15-Dec-1995
Citation: Tan, T.L.,Ong, P.P.,Zhou, Z.L. (1995-12-15). Transport properties of Rb+ ions in Ne and Ar gases. International Journal of Mass Spectrometry and Ion Processes 151 (2-3) : 117-125. ScholarBank@NUS Repository.
Abstract: The ratio of the transverse diffusion coefficient to mobility, DT/K, has been experimentally measured for Rb+ ions drifting in Ne and Ar gases in the presence of a uniform electric field. Results at 303 K are reported at electric field to neutral gas density ratio, E/N, values ranging from 5 to 500 Td for both Rb+Ne and Rb+Ar systems. The reduced mobility KO and the ratios of the longitudinal and transverse diffusion coefficients to mobility, DL/K and DT/K respectively, were calculated for both Rb+Ne and Rb+Ar systems with a Monte Carlo simulation (MCS) technique which used the interaction potential of Koutselos, Mason and Viehland (KMV) (J. Chem. Phys., 93 (1990) 7125) as input. The accuracy of this potential has been evaluated by comparing the DT/K results to the experimentally determined values. The KMV potential appears to be a good representation of the actual potential in the whole E/N range (5-500 Td) for Rb+Ne but only in the 5-350 Td range for Rb+Ar. Values of DL/K and DT/K were also derived using KO obtained from the present MCS calculations and from experimental data available in the literature, employing the generalised Einstein relations (GER) based on the three-temperature theory. In the E/N range studied for both Rb+Ne and Rb+Ar systems, the accuracy of the experimental measurements of DT/K is estimated to be ±3% and that of the MCS calculations to be ±2.5%. © 1995.
Source Title: International Journal of Mass Spectrometry and Ion Processes
ISSN: 01681176
Appears in Collections:Staff Publications

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