J H Whealton 1974 J. Phys. B: At. Mol. Phys. 7 1602 doi:10.1088/0022-3700/7/12/020
Breakdown of the diffusion equation for gaseous ions in a uniform electric field
J H Whealton
Show affiliationsThe equation of mass transport of a weakly ionized gas in a uniform electric field is solved giving initial corrections to the diffusion equation. The corrections arise because account is taken of the effect on the ion velocity distribution of both small density gradients and non-steady state. The Green's function in unbounded space of the resulting equation is found for two situations, one in the limit of vanishing electric fields and the other for finite fields. Generally initial deviations from the diffusion equation result in a skewed density distribution. The analysis is applied to the interpretation of drift velocities in drift tube experiments.
- PACS
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51.50.+v Electrical properties (ionization, breakdown, electron and ion mobility, etc.)
- Subjects
- Dates
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Issue 12 (21 August 1974)
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Breakdown of the diffusion equation for gaseous ions in a uniform electric field
J H Whealton 1974 J. Phys. B: At. Mol. Phys. 7 1602
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