Diagram and non-diagram lines in K spectra of nagnesium and oxygen from metallic and anodized magnesium

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Data for diagram (α 1, α 2 and β) and non-diagram (α′, α 3, α 4, α 5, α 6) lines of the Mg K series are given and discussed. Significant differences in wavelength, intensity, and line shape are seen between Mg metal and MgO. Large differences in intensity are seen particularly for the satellite lines α 3 and α 4. In the metal the α 4/α 3 ratio is 0·60 while in the oxide it is 0·98. Satellite lines are very strong in the Mg K spectrum. For instance, α 3 as in the metal is over 10 percent of the parent α 1α 2 doublet. The largest wavelength shift is seen in the weak diagram line K β which increases 0·0468 Å in going from the metal to the oxide. The oxygen Kα line at 23·59 Å from MgO is shown, discussed and compared to earlier work.