Determination of X-Ray Absorption Coefficients of Inhomogeneous Materials

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Abstract
A method has been developed for determining x-ray absorption coefficients of inhomogeneous materials. It involves comparison of the reflected and transmitted intensities from the same specimen at various scattering angles. The difference in the geometry of the reflection and transmission techniques permits calculation of the absorption coefficient from the observed intensities. Evaluation of the absorption coefficient at different angles overcomes the uncertainties of the conventional method caused by small angle scattering, white radiation, crystalline mineral impurities, etc., and eliminates the necessity of measuring the intensity of the primary beam. The method is not limited to x-rays; it is equally applicable to γ rays, neutrons, and visible light.

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