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Scaled Born Cross Sections for Excitations of H2 by Electron Impact

Published

Author(s)

Yong Sik Kim

Abstract

This article describes the scaling of plane-wave Born cross sections for the excitation of the H2 molecule to four low-lying electronic states (B singlet Sigma_u^+, C singlet Pi_u, B' singlet Sigma_u^+, D singlet Pi_u) by electron impact. The same BE and BEf scaling methods used on atoms was found to be equally effective for H2 in converting Born cross sections into cross sections in good agreement with available experiments. These scaling methods are applicable to only dipole-allowed excitations. The possibility of using these scaling methods, as was done in atoms, to estimate the contribution of inner-shell excitations to the total ionization cross section via excitation-autoionizationmechanism is discussed, though this type of indirect ionization in molecules is not as common as in atoms.
Citation
Physical Review A (Atomic, Molecular and Optical Physics)

Keywords

electron impact, excitation cross sections, H2

Citation

Kim, Y. (2008), Scaled Born Cross Sections for Excitations of H<sub>2</sub> by Electron Impact, Physical Review A (Atomic, Molecular and Optical Physics) (Accessed February 21, 2024)
Created October 16, 2008