Conversion of Ion Types in Nitrogen
- 15 February 1965
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 42 (4) , 1251-1261
- https://doi.org/10.1063/1.1696106
Abstract
A single-shutter drift tube, together with a hot-filament-type ion source, was used to investigate the conversion and drift properties of ions in nitrogen. Three different species of ions, namely N+, N2+, and N3+, were detected, and their drift velocities in nitrogen were measured over a range of E/p0 (ratio of electric field strength to pressure) from 10 to 200 V/(cm·mm Hg). N2+ was found to undergo time-rate-controlled conversion to N3+. Theoretical solutions of such a drift transient have been obtained and were compared with experiment. The attachment frequency α was deduced from the transient form, and its dependence on pressure and E/p0 measured. It was found that α∝p02 exp[A (−E/p0) ].Keywords
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