Effects of Chemical Composition on X-Ray Lines

The influence of chemical combination with oxygen on the width, index of asymmetry and separation and ratio of peak intensities of the alpha-doublet of the elements Ti, Cr, Mn, Fe and Zn of the K-series emission lines has been studied with a double crystal spectrometer. The widths of the alpha-lines were increased 3 to 35 percent and the beta-lines were increased 4 to 30 percent except in two cases, namely that of the Kα₁-line of TiO₂, whose width decreased 3 percent, and that of the beta-lines of the oxides of Mn, whose width remained the same as that of the pure metal. No effect of chemical composition on the widths of the gamma-lines was observed. The α₁→α₂ separations were unaffected by chemical composition. The asymmetries of all the lines were unaffected with the exceptions of the alpha-lines of TiO₂, and the Kα₁- and the beta-lines of MnO and Mn₃{O}₄$. The ratios of peak intensities of the alpha-lines were affected by changes of width caused by chemical composition such that the ratio of areas remained 2: 1.