The Influence of Chemical Binding and Crystal Structure on X-Ray Absorption Edges

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Abstract
An attempt is made to explain the positions and the fine structures of x-ray absorption edges, so far as these are not explained by Kronig's theory, by considering that they arise from transitions into a series of discrete states. These are states in which the electron is trapped in the region of surplus positive charge, which is created by the ejection of the electron from the inner shell of the parent ion. To calculate the energy of the trapped states we use a model in which the electron is bound to the positive ions in the neighborhood of the parent ion.