The Mass Absorption and Mass Scattering Coefficients for Homogeneous X Rays of Wave-Length between 0.13 and 1.05 Ångström Units in Water, Lithium, Carbon, Nitrogen, Oxygen, Aluminum, and Iron

Abstract

I. Present Status of the Problem of Absorption and Scattering of X Rays by Elements of Small Atomic Weight.—The mass scattering and mass absorption coefficients are defined, and a brief summary is given of the results of previous absorption and scattering measurements in the regions of wave-lengths on the short wave-length side of the K radiation of the absorbing substance, in so far as they relate to the present investigation. The current views in regard to the mechanism of absorption and scattering, and some of the theoretical work which has been advanced to account for these phenomena, has been outlined with regard to their bearing on the work reported in this paper.