Other
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9617563r&link_type=abstract
(International Conference on Laboratory Research for Planetary Atmospheres, 2nd, Charlottesville, VA, Oct. 21, 1990, Proceedings
Other
11
Ammonia, Atmospheric Chemistry, Carbon Disulfide, Cometary Atmospheres, Ionization Cross Sections, Electron Beams, Electron Energy, Electron Impact, Experiment Design, Molecular Beams
Scientific paper
A crossed electron beam-molecular beam collision geometry is used to measure cross sections for the production of positive ions by electron impact on NH3 and CS2. Ionization cross-section data for NH3 and the values of various cross sections are presented, as well as ionization efficiency curves for CS2. Considerable differences are found between the various results on NH3. The present values are close to the data of Djuric et al. (1981). The semiempirical calculations of Hare and Meath (1987) differ considerably in the absolute values of cross sections. Discrepancies were observed in comparisons of cross sections of other fragment ions resulting from the ionization and dissociate ionization of NH3.
Rao M. Varaprasada S.
Srivastava Satish K.
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