Abstract
We use the Coulomb-Born approximation for the calculation of the triple differential cross section for electron impact ionization of atoms. We present a perturbation expansion that allows the use of Coulomb waves with arbitrary Zeff for the initial and final states, overcoming the difficulties that arise in standard perturbation expansions when expanding Coulomb functions and transition amplitudes. Inclusion of the electron-electron coulomb normalization factor into the final state wave function gives a remarkably good agreement with recent experimental results of the triple differential cross section for He at energies close to threshold. We integrate the triple differential cross section over the angles of the ejected electron and compute the density of the generalized oscillator strength of atomic hydrogen, and investigate its dependency on the impact energy.
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References
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© 1993 Springer Science+Business Media Dordrecht
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Botero, J., Macek, J.H. (1993). Coulomb-Born Approximation for the Calculation of (e,2e) Cross-Sections. In: Whelan, C.T., Walters, H.R.J., Lahmam-Bennani, A., Ehrhardt, H. (eds) (e, 2e) & Related Processes. NATO ASI Series, vol 414. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2036-4_25
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DOI: https://doi.org/10.1007/978-94-011-2036-4_25
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-4901-6
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