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Title: Experimental and Monte Carlo simulation studies of transport properties of Cs+ swarms drifting in Ne and Ar gases
Authors: Zhou, Z.L.
Ong, P.P. 
Li, M.M.
Tan, T.L. 
Issue Date: 14-Jul-1996
Citation: Zhou, Z.L., Ong, P.P., Li, M.M., Tan, T.L. (1996-07-14). Experimental and Monte Carlo simulation studies of transport properties of Cs+ swarms drifting in Ne and Ar gases. Journal of Physics D: Applied Physics 29 (7) : 1917-1921. ScholarBank@NUS Repository.
Abstract: The ratio of the transverse diffusion coefficient to the mobility, DT/K, has been experimentally determined for Cs+ ions drifting in Ne and Ar gases, in the presence of a uniform electric field. Results at 303 K are reported for electric field-to-neutral gas number density ratio E/N range 5-600 Td, with an overall accuracy of ±3%. The DT/K results were effectively corrected for longitudinal end effects present in the drift tube. In addition, Monte Carlo simulation (MCS) calculations were performed for the mobility and for transverse and longitudinal diffusion coefficients using respectively the Koutselos, Mason and Viehland (KMV) interaction potential and a modified Tang-Toennies (MTT) interaction potential as input. The accuracy of the MCS calculations is estimated to be within 1% for K, 2% for DT/K and 3% for DL/K. Comparisons of the MCS results with available experimental data give an indication of the validity and accuracy of the respective assumed interaction potential at different interatomic distances. The calculated results did not reproduce the experimental data very well, suggesting that both potentials should be modified.
Source Title: Journal of Physics D: Applied Physics
ISSN: 00223727
DOI: 10.1088/0022-3727/29/7/028
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