Electron-Impact Total Ionization Cross Sections of Hydrocarbon Ions期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Electron-Impact Total Ionization Cross Sections of Hydrocarbon Ions

Authors:	Karl K Irikura Yong-Ki Kim M A Ali

Affiliation:	National Institute of Standards and Technology, Gaithersburg, MD 20899-0001;Department of Chemistry, Howard University, Washington, DC 20059

Abstract:	The Binary-Encounter-Bethe (BEB) model for electron-impact total ionization cross sections has been applied to ${CH}_{2}^{+}$ , ${CH}_{3}^{+}$ , ${CH}_{4}^{+}$ , $C_{2} H_{2}^{+}$ , $C_{2} H_{4}^{+}$ , $C_{2} H_{6}^{+}$ 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.

Keywords:	CH₂⁺ CH₃⁺ CH₄⁺ C₂H₂⁺ C₂H₄⁺ C₂H₆⁺ H₃O⁺ electron-impact ionization molecular ions