Abstract
The wavelength values and relative intensities of the X-ray non-diagram lines K α 3,4 of metallic iron and K β' of Cr 2 O 3 , Cr 2 (SO 4 ) 3 ·nH 2 O, MnO 2 , MnSO 4 ·4H 2 O, Fe 2 O 3 and Fe(NH 4 ) 2 (SO 4 ) 2 ·6H 2 O were measured by the fluorescent X-ray method using twe different characteristic X-rays. The K α 3,4 lines did not appear when an iron atom was excited by Ni K rays but were clearly observed when excited by Cu K rays. This was expected from the origin of the K α 3,4 lines that is supposed to arise from a K L – L L transition. In the case of the K β' line no difference was found regardless of whether it was excited by photons of energy lower or higher than K ( Z )+ L ( Z +1) which is necessary to remove simultaneously a K and an L electrons of an atom ( Z ). Therefore, the author may conclude that the K β' line is due not to the double but to the single ionization process and that it can be derived from the difference of the exchange interactions of the states having different total spins ( S +1/2) and ( S -1/2), where S is the total spin of the incomplete 3 d shell and 1/2 is that of the incomplete 3 p shell in the final state. The energy separations of the K β 1 and K β' lines calculated from the above-mentioned exchange energies nearly agree with those observed in the experiments.
Published Version
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