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A study of electron swarms in nitrogen gas by the voltage transient technique

P H Purdie and J Fletcher

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The voltage transient technique has traditionally been limited to high-pressure (p>500 Torr) discharges so that electron diffusion can be neglected. In much previous work image terms have also been omitted from the analysis of the experimental data. An analysis of the voltage transient has been developed which includes all image terms and both electron and ion diffusion. This analysis is applied to data in nitrogen gas, and the results have been compared with previous values obtained by other techniques. It is established that the measurement of voltage transients can be used to obtain electron transport parameters over a wide range of gas pressure and of E/N so long as the present full analysis is used.


PACS

51.20.+d Viscosity, diffusion, and thermal conductivity

05.60.-k Transport processes

Subjects

Plasma physics

Statistical physics and nonlinear systems

Dates

Issue 6 (14 June 1989)



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