Electron-helium S-wave model benchmark calculations. II. Double ionization, single ionization with excitation, and double excitation
Bartlett, P.L. and Stelbovics, A.T. (2010) Electron-helium S-wave model benchmark calculations. II. Double ionization, single ionization with excitation, and double excitation. Physical Review A - Atomic, Molecular, and Optical Physics, 81 (2). Article number 022716.
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The propagating exterior complex scaling (PECS) method is extended to all four-body processes in electron impact on helium in an S-wave model. Total and energy-differential cross sections are presented with benchmark accuracy for double ionization, single ionization with excitation, and double excitation (to autoionizing states) for incident-electron energies from threshold to 500 eV. While the PECS three-body cross sections for this model given in the preceding article are in good agreement with other methods, there are considerable discrepancies for these four-body processes. With this model we demonstrate the suitability of the PECS method for the complete solution of the electron-helium system.
|Publication Type:||Journal Article|
|Murdoch Affiliation:||School of Engineering and Energy|
|Publisher:||The American Physical Society|
|Copyright:||© 2010 American Physical Society|
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