L-Discontinuities in X-Ray Absorption

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BY definition, the absorption coefficient is the factor of proportionality of absorption in an infinitely thin layer. The atomic absorption coefficient, then, is the factor of proportionality for a very small number of atoms. This factor, therefore, can be said to be a measure of the probability of absorption for each photon passing the atom.

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OLSSON, E. L-Discontinuities in X-Ray Absorption. Nature 129, 94 (1932) doi:10.1038/129094b0

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