Measurements of Dissociative Recombination and Diffusion in Nitrogen at Low Pressures

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Abstract
The measurements of recombination in nitrogen and nitrogen-helium mixtures by Faire, Fundingsland, Aden, and Champion have been extended using, in addition to the basic microwave techniques, a mono chromator and photomultiplier to study the spectra emitted. Electron production in the afterglow due to helium metastable atoms has been investigated and the results have made it possible to correct, where necessary, the apparent value of the recombination coefficient of nitrogen ions in nitrogen-helium mixtures. In addition, the ambipolar diffusion coefficient in nitrogen has been determined. This has been used to correct for losses due to fundamental mode diffusion. The magnitude of higher mode diffusion losses is discussed and shown to be small in this experiment.

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