Titlebook: Variational Methods in Electron-Atom Scattering Theory; Robert K. Nesbet Book 1980 Springer Science+Business Media New York 1980 Cross sec

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Variational Methods in Electron-Atom Scattering Theory978-1-4684-8431-1

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system. The practical problem of interest here is the scattering of a low- energy electron by an N-electron atom. It has been difficult in this area of study to achieve theoretical results that are even qualitatively correct, yet quantitative accuracy is often needed as an adjunct to experiment. The

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,Quantum Mechanics of Electron — Atom Scattering,ientific interest. In complex excited media, ranging from stellar atmospheres to laser systems, these processes can be analyzed and understood only if the various competing subprocesses are correctly characterized. This book is concerned with quantitative theoretical methods that have helped to eluc

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FIG

Computational Technique,isymmetrized electronic wave functions. Such matrix elements are required in Eq. (2.9) for the matrix variational method. Similar matrix elements occur in Eq. (2.251), for the . 1)-electron hybrid method based on the Schwinger variational principle.

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Applications to One-Electron Atoms,e conveniently included in the class of “one-electron” atoms. A model that represents the closed-shell positive ion core of these atoms by an effective static potential is well justified, so that low-energy electron scattering is essentially a two-electron problem for both hydrogen and the alkali me

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