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Electron-Impact Total Ionization Cross Sections of Hydrocarbon Ions



Karl K. Irikura, Yong Sik Kim, M A. Ali


The Binary-Encounter-Bethe (BEB) model for electron-impact total ionization cross sections has been applied to CH2+, CH3+, CH4+, C2H2+, C2H4+, C2H6+, 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.
Journal of Research (NIST JRES) -
107 No. 1


C<sub>2</sub>H<sub>2</sub><sup>+</sup>, C<sub>2</sub>H<sub>4</sub><sup>+</sup>, C<sub>2</sub>H<sub>6</sub><sup>+</sup>, CH<sub>2</sub><sup>+</sup>, CH<sub>3</sub><sup>+</sup>, CH<sub>4</sub><sup>+</sup>, electron-impact ionization, H<sub>3</sub>O<sup>+</sup>, molecular ions


Irikura, K. , , Y. and Ali, M. (2002), Electron-Impact Total Ionization Cross Sections of Hydrocarbon Ions, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD (Accessed June 23, 2024)


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Created February 1, 2002, Updated February 17, 2017