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Negative ions formed in N2/CH4/Ar discharge – a simulation of Titan's atmosphere chemistry

Horvath, G.; Aranda-Gonzalvo, Y.; Mason, N. J.; Zahoran, M. and Matejcik, S. (2010). Negative ions formed in N2/CH4/Ar discharge – a simulation of Titan's atmosphere chemistry. The European Physical Journal - Applied Physics, 49(1) p. 13105.

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The formation of negative ions produced in a negative point-to-plane corona discharge fed by a Ar/N2//CH4/ gas mixture has been studied using mass spectrometry. The measurements were carried out in flowing regime at ambient temperature and a reduced pressure of 460 mbar. The CN ? anion has been found to be the most dominant negative ion in the discharge and is believed to be the precursor of heavier negative ions such as C3/N ? and C5/N ? . The most likely pathway for the formation of such molecular anions is H-loss dissociative electron attachment to HCN, H3/CN and H5/CN formed in the discharge. These same anions have been detected in Titan's atmosphere and the present experiments may provide some novel insights into the chemical and physical mechanisms prevalent in Titan's atmosphere and hence assist in the interpretation of results from the Cassini Huygens space mission.

Item Type: Journal Item
Copyright Holders: 2009 EDP Sciences
ISSN: 1286-0050
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Physics
Item ID: 19045
Depositing User: Users 9108 not found.
Date Deposited: 01 Dec 2009 09:53
Last Modified: 17 Jun 2020 17:44
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