The motion of slow positive ions in gases - Mobilities of potassium and nitrogen ions in nitrogen

Autor:	J. Dutton, P. G. Davies, F. Llewellyn Jones
Rok vydání:	1966
Předmět:	Materials science Argon Drift velocity chemistry chemistry.chemical_element Electron Atomic physics Diffusion (business) Mass spectrometry Nitrogen Pressure gradient Ion
Zdroj:	Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences. 259:321-330
ISSN:	2054-0272 0080-4614
DOI:	10.1098/rsta.1966.0017
Popis:	It was shown in part I that there is a need for further experimental data on the drift velocity W of ions in gases such as nitrogen and argon where there are still unresolved problems. In addition, measurements of quantities such as the diffusion coefficient D and mean energy e are required for ions in most gases since published data on these quantities are scanty. In principle, it is possible to determine these quantities by measuring both the drift velocity W and the ratio W/D for selected groups of ions in an apparatus combining a time of drift electrode system, similar to that used by Tyndall et al. (1928) and Tyndall (1938), with a lateral diffusion system similar to that used by Townsend (1925) for the measurement of the ratio W/D for electrons. The advantages of using a time of drift selector for the ions rather than, say, a mass spectrometer are first, that there is no pressure gradient between the selector and the diffusion apparatus, so that no differential pumping is necessary, and secondly, that not only are the ions selected but their mobility is measured at the same time.
Databáze:	OpenAIRE
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