B-spline methods in R-matrix theory for scattering in two-electron systems

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Abstract

The use of B-spline basis sets in R-matrix theory for scattering processes has been investigated. In the present approach a B-spline basis is used for the description of the inner region, which is matched to the physical outgoing wavefunctions by the R-matrix. Using B-splines, continuum basis functions can be determined easily, while pseudostates can be included naturally. The accuracy for low-energy scattering processes is demonstrated by calculating inelastic scattering cross sections for e colliding on H. Very good agreement with other calculations has been obtained. Further extensions of the codes to quasi two-electron systems and general atoms are discussed as well as the application to (multi) photoionization.
Original languageEnglish
Pages (from-to)453-465
Number of pages13
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume30
Issue number3
DOIs
Publication statusPublished - 14 Feb 1997

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