On the dissociative ionization of SO2 in Io's atmosphere

Michael, M. ; Bhardwaj, A. (1997) On the dissociative ionization of SO2 in Io's atmosphere Geophysical Research Letters, 24 (16). pp. 1971-1974. ISSN 0094-8276

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Official URL: http://www.agu.org/pubs/crossref/1997/97GL02056.sh...

Related URL: http://dx.doi.org/10.1029/97GL02056

Abstract

Unattenuated ionization rates for the dissociative photoionization of SO2 producing SO2+, SO+, S+, O+, and O2+ ions are reported during solar minimum and maximum conditions. It is found that in the atmosphere of Io the photo-dissociation-ionization of SO2 could be an important source of the production of SO+, S+, O+, and O2+ ions and that its contribution is much greater (factor of 5-10) compared with that due to direct photoionization of, respectively, SO, S, O, and O2 gases. Role of photoelectron impact ionization of SO2 in producing SO2+, SO+, S+, O+, and O2+ ions in the Io's atmosphere is investigated using a Monte Carlo model. It is recommended that the models of Io's ionosphere-atmosphere should include the dissociative ionization of SO2.

Item Type:Article
Source:Copyright of this article belongs to American Geophysical Union.
ID Code:2497
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