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PUBLICATIONS

Electron-Impact Total Ionization Cross Sections of Molecular Ions

Published

Author(s)

Yong Sik Kim, Karl Irikura, M A. Ali

Abstract

The Binary-Encounter-Bethe (BEB) model for electron-impact total ionization cross sections of neutral molecules has been modified for molecular ions. The total ionization cross section for H+2, N+2, CD+, and CO+ from the modified BEB formula are compared to available experimental data. The theory is in good agreement with experimental data on H+2, N+2 and CD+, but the experimental data by Belic et al. on N+2 and CO+ are lower than the theory. The large difference between the theory and experiment on CO+ is a strong indication of the dominance of the dissociative ionization channel, CO+ -> C+ + O+, which was not included in the experiment.
Citation
Journal of Research (NIST JRES) -
Volume
105 No. 2
NIST Pub Series
Journal of Research (NIST JRES)
Pub Type
NIST Pubs

Keywords

electron-impact ionization, molecular ion, total ionization cross sections

Citation

Kim, Y. , Irikura, K. and Ali, M. (2000), Electron-Impact Total Ionization Cross Sections of Molecular Ions, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD (Accessed April 29, 2024)

Created February 29, 2000, Updated October 12, 2021