Abstract
Abstract We present an overview of recent progress in the description of wave functions containing two continuum electrons in terms of B-spline basis functions. We present an outline of the approach to obtain electron-impact ionization cross-sections, and show results for electron-impact excitation and ionization of He+. We demonstrate how these cross-sections can be used within the recollision model and we stress the importance of using electron-impact ionization cross-sections with the proper total spin. Finally, we examine the use of B-splines for the investigation of double photoionization processes.
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