SulfurKβx-ray emission spectra and electronic structures of some metal sulfides

The $K\beta$ emission spectra of sulfur in $\alpha -\mathrm{MnS}$, FeS, CoS, NiS, and CuS, and in two modifications (zinc-blende and wurtzite structures) of ZnS and CdS are obtained with a two-crystal spectrometer. The spectra of FeS, CoS, and NiS consist of a broad band and are alike. The spectra from the modifications of ZnS and CdS are similar to each other. The spectrum of CuS consists of two prominent peaks and it is discussed in relation to the sulfur $K\beta$ emission spectra from $\alpha -\mathrm{sulfur}$ and NiS. The $K\beta$ emission bands of ZnS and CdS are comparatively narrow, while those of the other metal sulfides are very wide. Results are evaluated by comparing the $K\beta$ emission spectra of these metal sulfides with the $\mathrm{sulfur}-K$ absorption spectra and with the energy-band structures.