Mobilities and interaction potentials for Br−–Ar, Br−–Kr, and Br−–Xe

D. R. Lamm; R. D. Chelf; J. R. Twist; F. B. Holleman; M. G. Thackston; F. L. Eisele; W. M. Pope; I. R. Gatland; E. W. McDaniel

doi:10.1063/1.445977

journal article Aug 15, 1983

Mobilities and interaction potentials for Br−–Ar, Br−–Kr, and Br−–Xe

D. R. Lamm R. D. Chelf J. R. Twist F. B. Holleman M. G. Thackston F. L. Eisele W. M. Pope I. R. Gatland E. W. McDaniel

The Journal of Chemical Physics Vol. 79 No. 4 pp. 1965-1968 · AIP Publishing

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Abstract

Mobilities of Br− ions in Ar, Kr, and Xe gases at 300 K have been measured in a drift tube mass spectrometer over a wide range of E/N (the ratio of the electric field to the neutral gas number density). For any ion–neutral gas interaction potential, implementation of the Viehland–Mason kinetic theory (accurate for arbitrary E/N) yields theoretical mobility data. This theory is employed in conjunction with an iterative-inversion scheme which uses experimental mobility data to modify an initial ‘‘guess’’ 4,6,12 potential to produce a ‘‘directly determined’’ potential which accurately reproduces the experimental mobilities for a given ion–neutral atom pair. These potentials are tabulated for Br−–Ar, Br−–Kr, and Br−–Xe and their salient features are compared to previous ‘‘directly derived’’ potentials of other ions in these gases.

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Details

Published: Aug 15, 1983
Vol/Issue: 79(4)
Pages: 1965-1968

Authors

D

D. R. Lamm