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1982

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Shake-up processes accompanying electron transitions in atoms

Elementary processes in many-electron atoms--radiative and Auger transitions, photoionization, ionization by electron impact, etc.--are usually accompanied by relaxation of the electron shells. The conditions under which such an inherently many-electron problem can be solved in the shake-up approximation are examined, and the shake-up processes occurring as a result of electron transitions are described from a unified point of view. The features that are common both to this form of excitation and to the shake-up of atomic electrons following nuclear transformations are pointed out, and the distinguishing features are also noted. The various electron shake-up processes considered are the radiative Auger effect, the two-electron-one-photon transition, double ionization, spectral line broadening, the post-collision interaction, Auger decay stimulated by collision with a fast electron, and three-electron Auger transitions (the double and half Auger effects). These processes are classified according to the type of electron transition causing the shake-up, and the experimental data and methods of theoretical description are reviewed. Other effects of a similar nature that could accompany transitions in the electron shells of atoms are also mentioned. A derivation of the shake-up approximation is given, and it is pointed out that this approximation is to a large extent analogous to the distorted-waves approximation in scattering theory. It is shown that the shake-up approximation is rather effective for obtaining estimates of the probabilities of the various effects.

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Fulltext is also available at DOI: 10.1070/PU1982v025n12ABEH005003
PACS: 32.80.Hd, 34.80.Dp, 32.70.Jz, 31.15.+q (all)
DOI: 10.1070/PU1982v025n12ABEH005003
URL: https://ufn.ru/en/articles/1982/12/b/
Citation: Matveev V I, Parilis E S "Shake-up processes accompanying electron transitions in atoms" Sov. Phys. Usp. 25 881–897 (1982)
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Оригинал: Матвеев В И, Парилис Э С «Встряска при электронных переходах в атомах» УФН 138 573–602 (1982); DOI: 10.3367/UFNr.0138.198212b.0573

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