Distorted-wave Born Approximation for the Ionisation of Hydrogen by Electrons
Open Access
- 1 January 1990
- journal article
- research article
- Published by CSIRO Publishing in Australian Journal of Physics
- Vol. 43 (3) , 291-302
- https://doi.org/10.1071/ph900291
Abstract
Matrix elements for ionisation play an important part in electron-atom scattering calculations. Two methods for describing ionisation that can be incorporated into a scattering calculation are tested here against coplanar asymmetric experimental differential cross sections at 150 and 250 eV. They are the distorted-wave Born approximation and the coupled pseudostates method. A method that incorporates the exact boundary condition for three charged bodies describes the data significantly better and shows an important direction for improvement of scattering calculations.Keywords
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