Electron-ion coincidence experiments: absolute detector efficiencies and neutral dissociation cross sections

Electron-ion coincidence studies, using 40 eV electrons on He, Ar, Kr, and N 2 and 30 eV electrons on CF 4 have been carried out for all ions produced by impact of electrons on an effusive gas jet and electrons scattered through an angle of 45°. The original purpose of these experiments was to obtai...

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Bibliographic Details
Published in:Journal of molecular structure 1995, Vol.352, p.235-243
Main Authors: Bruce, M.R., Bonham, R.A.
Format: Article
Language:English
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Summary:Electron-ion coincidence studies, using 40 eV electrons on He, Ar, Kr, and N 2 and 30 eV electrons on CF 4 have been carried out for all ions produced by impact of electrons on an effusive gas jet and electrons scattered through an angle of 45°. The original purpose of these experiments was to obtain the absolute instrumental efficiency for our time-of-flight mass spectrometer. We have discovered, as a by-product, that useful information about the absolute cross section for neutral dissociation can also be obtained from such studies.
ISSN:0022-2860
1872-8014
DOI:10.1016/0022-2860(94)08510-O