Abstract
Theoretical studies of electron impact double ionization cross sections of Ne5+ and Ne6+ ions have been performed in the binary encounter approximation (BEA). Direct double ionization (DDI) has been investigated in the modified double binary encounter model. The K-shell ionization cross sections have been also calculated in the BEA to take into account the contributions to double ionization from the ionization-autoionization (IA) process. The effect of the Coulombic field of the target ion on the incident electron has been considered in the present work. Accurate expression of σ ΔE (cross section for energy transfer ΔE) and the Hartree-Fock (HF) velocity distributions for the target electrons have been used throughout the calculations. The present results are in overall moderate agreement with the experimental observations. Possible reasons behind the discrepancies between the theory and the experiment have been discussed.
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Jha, L.K., Singh, M.P. & Kumar, S. Double ionization of Ne5+ and Ne6+ ions by electron impact. Eur. Phys. J. D 66, 116 (2012). https://doi.org/10.1140/epjd/e2012-20420-3
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DOI: https://doi.org/10.1140/epjd/e2012-20420-3