Interpretation of Rate Constants Measured in Drift Tubes in Terms of Cross Sections

作者: S. B. Woo , S. F. Wong

DOI: 10.1063/1.1676609

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摘要: The basic equation of the rate constant a two‐body reaction, κ= ∫ vg vi fgas(vg)fion(vi)vrσ(vr)dvidvg, is used to infer cross section from ion—molecule reactions measured in drift tubes as function E/p0, κ, vr, and σ are constant, relative speed, section, respectively. Maxwellian distribution at gas temperature for fgas. A displaced Maxwellian, having parameter defined by diffusion coefficients, displacement 〈 vz〉=vd, fion. vd velocity. Justifications given. advantage this approach interpretation constants endothermic reactions. Qualitative quantitative examples considered. Very good agreements with experimental results obtained. way calculating under thermal equilibrium conditions proposed. Its limitations discussed. importance ionospheric model calc...

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