Abstract
Although the independent-electron model is usually a good first approximation when considering atomic structure or electron-atom collision processes, and the model can usually be improved pertur-batively to take account of the effects of electron-electron correlations, there remain nevertheless some essentially non-perturbative systems in which these correlations are of major importance. These correlation-dominated examples include transitions in which two electrons essentially change their state simultaneously, and systems in which electron-electron correlations are so strong that the independent-electron model fails to provide an adequate starting basis for classification purposes (see for example Fano 1976, Herrick and Keilman 1980, Fano 1980).
Written while on study leave at FOM-Instituut voor Atoom- en Molecuulfysica, Amsterdam.
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Read, F.H. (1981). Correlation Effects in Electron-Atom Scattering. In: Kleppner, D., Pipkin, F.M. (eds) Atomic Physics 7. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-9206-8_19
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