Abstract
Electron impact double ionization cross-sections for Ba and Ba+ have been calculated in the binary encounter approximation. Hartree-Fock velocity distribution has been used for the first ejected electron and a hydrogenic velocity distribution for the second. For Ba+ the focusing effects of the target ion on the incident electron have been incorporated in the calculations. Contributions from ionization-autoionization to the ionization cross-sections, as observed in experiments, have been included in the present work. The calculated results show structures as observed in recent experiments.
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Jha, L.K., Chatterjee, S.N. & Roy, B.N. Electron impact double ionization of Ba and Ba+ . Pramana - J Phys 43, 169–174 (1994). https://doi.org/10.1007/BF02875145
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DOI: https://doi.org/10.1007/BF02875145