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Title: Validity of the effective temperature scale for a dilute Li+ swarm in a Xe gas
Authors: Ong, P.P. 
Issue Date: 1993
Citation: Ong, P.P. (1993). Validity of the effective temperature scale for a dilute Li+ swarm in a Xe gas. Physical Review E 47 (6) : 4323-4329. ScholarBank@NUS Repository.
Abstract: The effective-temperature concept arising from the two-temperature (2T) kinetic theory for the nonreactive migration of a dilute ion swarm in a neutral gas under the action of a uniform electrostatic field has been tested over a wide temperature range by Monte Carlo simulation (MCS). Such a test over the prescribed temperature span has not been made experimentally because of the inherent difficulty in designing an apparatus which permits the temperature of the ion drift chamber to be varied so widely. The MCS test is here applied to Li+ in Xe, which offers the most favorable conditions for the 2T theory to be a valid approximation of the more sophisticated three-temperature theory. Results established that for such cases it is possible to express the mobility K0 and transverse diffusion DT, but not the longitudinal diffusion DL, in terms of a univariate effective-temperature scale instead of the separate parameters of gas temperature and the ratio of electric field to gas concentration. More remarkably, the ratio DT/K was found to bear a simple linear relation with Teff over a very wide range. © 1993 The American Physical Society.
Source Title: Physical Review E
ISSN: 1063651X
DOI: 10.1103/PhysRevE.47.4323
Appears in Collections:Staff Publications

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