Photo-Ionization in Liquids and Crystals and the Dependence of the Frequency of X-Ray Absorption Edges on Chemical Constitution

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Abstract
The mechanism giving rise to the electron affinity E of a liquid or a crystal is discussed, and it is shown that the relation E≅αW0 should hold, in which α is a numerical factor lying between ½ and 1, and W0, the average potential energy of a free electron in the liquid or crystal (with the sign changed), is related to the specific diamagnetic susceptibility of the liquid or crystal by the equation W0=−6.43×106κ (involt−electrons).