De Lucia, Frank C. and Herbst, Eric and Plummer, Grant M. and BLake, Geoffrey A. (1983) The production of large concentrations of molecular ions in the lengthened negative glow region of a discharge. Journal of Chemical Physics, 78 (5). pp. 2312-2316. ISSN 0021-9606. http://resolver.caltech.edu/CaltechAUTHORS:LUCjcp83
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A technique for enhancement of positive molecular ion concentrations in a glow discharge is presented. The technique consists of modifying an anomalous glow discharge by the addition of a longitudinal magnetic field of up to 300 G. Enhancements in the ion signal strength, as measured by millimeter and submillimeter wave spectroscopy, are approximately two orders of magnitude. Evidence is presented that the magnetic field increases the length of the ion rich negative glow by restricting inside a small diameter tube the ionizing electrons accelerated by the large cathode drop of an anomalous glow discharge.
|Additional Information:||Copyright © 1983 American Institute of Physics (Received 7 October 1982; accepted 23 November 1982) Supported by U.S. Army Research Office Contract DAAG-29-80-C-0026 and NASA Grant NAGW-189.|
|Subject Keywords:||glow discharges; molecular ions; magnetic fields; microwave spectra|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||20 Dec 2006|
|Last Modified:||26 Dec 2012 09:24|
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