title: Electron-Impact Total Ionization Cross Sections of Hydrocarbon Ions.
abstract: The Binary-Encounter-Bethe (BEB) model for electron-impact total ionization cross sections has been applied to [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and H3O(+). The cross sections for the hydrocarbon ions are needed for modeling cool plasmas in fusion devices. No experimental data are available for direct comparison. Molecular constants to generate total ionization cross sections at arbitrary incident electron energies using the BEB formula are presented. A recent experimental result on the ionization of H3O(+) is found to be almost 1/20 of the present theory at the cross section peak.
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, MD 20899-0001.
authors.forename: Karl K
authors.initials: KK
authors.lastname: Irikura
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, MD 20899-0001.
authors.forename: Yong-Ki
authors.initials: YK
authors.lastname: Kim
authors.affiliation: Department of Chemistry, Howard University, Washington, DC 20059.
authors.forename: M A
authors.initials: MA
authors.lastname: Ali
keywords: C2H2+; C2H4+; C2H6+; CH2+; CH3+; CH4+; H3O+; electron-impact ionization; molecular ions