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- W2086756545 abstract "A full four-body implementation of the propagating exterior complex scaling (PECS) method [J. Phys. B 37, L69 (2004)] is developed and applied to the electron-impact of helium in an $S$-wave model. Time-independent solutions to the Schrodinger equation are found numerically in coordinate space over a wide range of energies and used to evaluate total and differential cross sections for a complete set of three- and four-body processes with benchmark precision. With this model we demonstrate the suitability of the PECS method for the complete solution of the full electron-helium system. Here we detail the theoretical and computational development of the four-body PECS method and present results for three-body channels: single excitation and single ionization. Four-body cross sections are presented in the sequel to this article [Phys. Rev. A 81, 022716 (2010)]. The calculations reveal structure in the total and energy-differential single-ionization cross sections for excited-state targets that is due to interference from autoionization channels and is evident over a wide range of incident electron energies." @default.
- W2086756545 created "2016-06-24" @default.
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- W2086756545 date "2010-02-18" @default.
- W2086756545 modified "2023-09-23" @default.
- W2086756545 title "Electron-helium<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mi>S</mml:mi></mml:mrow></mml:math>-wave model benchmark calculations. I. Single ionization and single excitation" @default.
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- W2086756545 doi "https://doi.org/10.1103/physreva.81.022715" @default.
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